Consulta: subjectFacets:"Fermentation"
Registros recuperados: 163
Data/hora: 04/06/2024 14:27:59

Determinación bioquímica de la actividad enzimática de aminopeptidasa (tcAPE) y amplificación de fragmentos de ADNc de posibles genes TcAPE de Theobroma cacao L
Provedor de dados: 32
Autores: Aguilar Román, Lorena.
En el presente trabajo, se propuso realizar una determinación bioquímica de la actividad enzimática de aminopeptidasa (tcAPE) durante los procesos de germinación y fermentación de la semilla de T. cacao L., así como amplificar los extremos 3’ de fragmentos de cDNA de los posibles genes codificantes. El trabajo inició con la determinación de la actividad enzimática de tcAPE. Los resultados indicaron que la actividad enzimática de tcAPE, está presente durante el proceso de germinación de la semilla de T. cacao L., sin embargo, la síntesis de esta enzima se eleva durante la fase de crecimiento, misma que corresponde a la última etapa del proceso de germinación de la semilla de cacao criollo del genotipo almendra blanca. La actividad de tcAPE también se...
Tipo: Tesis
Palavras-chave: Theobroma cacao L.; Aminopeptidasa; Proteasas; Germinación; Fermentación; Maestría; Producción Agroalimentaria en el Trópico; Aminopeptidase; Proteases; Germination; Fermentation.
Ano: 2008
URL: http://hdl.handle.net/10521/1575

Utilización de un biofertilizante líquido en maíz (Zea mays L.) bajo condiciones del trópico húmedo.
Provedor de dados: 32
Autores: Alejandro Góngora, Antonio Okendo.
El objetivo de ésta investigación fue elaborar un biofertilizante líquido (Biol) fermentado anaeróbicamente, utilizando subproductos animales y vegetales, además de evaluar su eficacia en el cultivo de maíz, se contrasto con aplicaciones de fertilizante químico (manejo tradicional) y un biofertilizante comercial. Dado que no existe una dosis generada para aplicaciones con biofertilizantes se probaron tres concentraciones (5%, 10%, 15%) con el fin de obtener una dosis óptima preliminar de biofertilización del maíz.  El experimento se estableció en un predio del Poblado C-41, Plan Chontalpa, Huimanguillo, Tabasco. Para la elaboración y obtención del biofertilizante liquido fermentado anaeróbicamente, se preparó un tanque de 200 litros donde se vertieron los...
Palavras-chave: Biodigestor; Biomasa; Fermentación; Biol; Biofertilizante; Biomass; Fermentation; Biofertilizer; Producción Agroalimentaria en el Trópico; Maestría.
Ano: 2012
URL: http://hdl.handle.net/10521/758

Emisiones de metano generadas por excretas de animales de granja y contenido ruminal de bovino.
Provedor de dados: 32
Autores: Ramírez Hernández, Irma Fabiola.
Las emisiones de metano (CH4) de las actividades ganaderas, como un gas de efecto invernadero, son estimadas para el desarrollo de inventarios. Sin embargo el aprovechamiento de la producción del CH4 a partir de excretas de animales rumiantes y no rumiantes, para la generación de energía, requiere de establecer condiciones de temperatura y humedad para eficientar la mayor producción de este gas, compuesto del biogás producido por la actividad microbiana. En este estudio, se desarrollaron cuatro experimentos para cuantificar la producción de CH4, con la fermentación controlada, en un sistema biorreactor-trampa. En el 1er experimento, se compararon diferentes excretas de animales rumiantes: estiércol de ganado lechero y en engorda, excretas de cabras y...
Palavras-chave: Biogás; Metano; Excretas; Rumiantes; Fermentación; Biogas; Metane; Manure; Ruminants; Fermentation; Doctorado; Hidrociencias.
Ano: 2010
URL: http://hdl.handle.net/10521/282

Fermentation optimization of maltose-binding protein fused to neutrophil-activating protein from Escherichia coli TB1
Provedor de dados: 69
Autores: Lu,Jike; Song,Qi; Ji,Zhenyu; Liu,Xin; Wang,Ting; Kang,Qiaozhen.
Background The fermentation conditions of recombinant maltose-binding protein fused to neutrophil-activating protein (rMBP-NAP) of Helicobacter pylori were optimized from Escherichia coli TB1 with varying medium, inoculum age and size, time, inducer, pH and temperature in batch fermentation. Results It was revealed that the optimal conditions for the production of rMBP-NAP in shake flask were as follows: M9 medium (with 3% yeast extract powder added), inoculum age of 19 h, inoculum size of 6%, initial pH of 6.6, temperature of 37°C, and 0.7 mmoL/L IPTG inducted 21 h in a 50 mL/250 mL shake flask. The recombinant protein yield was increased from 59 to 592 mg/L after optimization. Fermentation process conducted in a 10 L fermenter with similar conditions...
Tipo: Journal article
Palavras-chave: Escherichia coli; Fermentation; Optimization; Recombinant protein.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000400004

Analysis of batch and repeated fedbatch productions of Candida utilis cell mass using mathematical modeling method
Provedor de dados: 69
Autores: Lin,Yutian; Liu,Guoli; Lin,Huibin; Gao,Ling; Lin,Jianqiang.
Background: Candida utilis is widely used in bioindustry, and its cell mass needs to be produced in a cost effective way. Process optimization based on the experimental results is the major way to reduce the production cost. However, this process is expensive, time consuming and labor intensive. Mathematical modeling is a useful tool for process analysis and optimization. Furthermore, sufficient information can be obtained with fewer experiments by using the mathematical modeling, and some results can be predicted even without doing experiments. Results: In the present study, we performed the mathematical modeling and simulation for the cell mass production of Candida utilis based on limited batch and repeated fedbatch experiments. The model parameters...
Tipo: Journal article
Palavras-chave: Candida utilis; Fermentation; Genetic algorithm; Mathematical model.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000400002

Bionanoparticles, a green nanochemistry approach
Provedor de dados: 69
Autores: Cauerhff,Ana; Castro,Guillermo R.
Background: In the past decade, considerable attention has been paid for the development of novel strategies for the synthesis of different kind of nano-objects. Most of the current strategies are usually working by the use physical or chemical principles to develop a myriad of nano-objects with multiple applications. Main fields of nanotechnology applications range from catalysis, micro- and nano-electronics (semiconductors, single electrons transistors), non-linear optic devices, photo-electrochemistry to biomedicine, diagnostics, foods and environment, chemical analysis and others. Results: Two main avenues for nanoparticles synthesis: cell-free extract and cell cultivation have been reported. The state of art of both biotechnological approaches for...
Tipo: Journal article
Palavras-chave: Bacteria; Bionanoparticles; Fermentation; Fungi green chemistry; Plant extracts.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000300011

Hyper-production of a thermotolerant &amp;#946;-xylosidase by a deoxy-D-glucose and cycloheximide resistant mutant derivative of Kluyveromyces marxianus PPY 125
Provedor de dados: 69
Autores: Rajoka,Muhammad Ibrahim; Khan,Sana.
Production of &amp;#946;-xylosidaseby a cycloheximide and 2-deoxy-D-glucose-resistant mutant of Kluyveromyces marxianus PPY125 was studied when cultured on growth media containing galactose, glucose, xylose, cellobiose, sucrose and lactose as carbon sources. Xylose, cellobiose, lactose and sucrose were the key substrates. Both K. marxianus PPY125 and its mutant (M 125) supported maximum &amp;#946;-xylosidase specific product yield (Y P/X) following growth on xylose. Basal level of activity was observed in non-induced cultures grown on glucose. The mutant produced 1.5 to 2-fold more &amp;#946;-xylosidase than that produced by the wild cells. Synthesis of &amp;#946;-xylosidase was regulated by an induction mechanism in both wild and mutant cells. Addition of...
Tipo: Journal article
Palavras-chave: Enthalpy; Entropy; Enzyme kinetics; Fermentation; Induction; Thermodynamics.
Ano: 2005
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582005000200007

Consolidated briefing of biochemical ethanol production from lignocellulosic biomass
Provedor de dados: 69
Autores: Spyridon,Achinas; Willem Euverink,Gerrit Jan.
Bioethanol production is one pathway for crude oil reduction and environmental compliance. Bioethanol can be used as fuel with significant characteristics like high octane number, low cetane number and high heat of vaporization. Its main drawbacks are the corrosiveness, low flame luminosity, lower vapor pressure, miscibility with water, and toxicity to ecosystems. One crucial problem with bioethanol fuel is the availability of raw materials. The supply of feedstocks for bioethanol production can vary season to season and depends on geographic locations. Lignocellulosic biomass, such as forest-based woody materials, agricultural residues and municipal waste, is prominent feedstock for bioethanol cause of its high availability and low cost, even though the...
Tipo: Journal article
Palavras-chave: Bioconversion; Bioethanol; Fermentation; Hydrolysis; Renewable fuels.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000500009

Bioconversion of mixed free fatty acids to poly-3-hydroxyalkanoates by Pseudomonas putida BET001 and modeling of its fermentation in shake flasks
Provedor de dados: 69
Autores: Makhdum Munawar,Khalil Munawar; Simarani,Khanom; Annuar,Mohamad Suffian Mohamad.
Background: The paper reports on the utilization of palm kernel oil (PKO) as a low cost renewable substrate for medium-chain-length poly-3-hydroxyalkanoates (mcl-PHA) production by Pseudomonas putida BET001. Investigation on the effects of selected key variables on growth, mixed free fatty acids consumption and mcl-PHA production by the bacterial culture in the shaken flask system were carried out along with its kinetic modeling. Results: The biomass production, fatty acids consumption and mcl-PHA production were found favorable when the strain was cultured in mineral medium at pH 6-7,28°C, aeration surface-to-volume ratio of 0.4 x 10(6) m-1, 250 rpm agitation rate for 48 h. Mcl-PHA production by this strain showed mixed growth and non-growth associated...
Tipo: Journal article
Palavras-chave: Biopolymer; Fermentation; Medium-chain-length PHA; Palm kernel oil; Pseudomonas putida.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000100008

1,3-Propanediol production from crude glycerol by Clostridium butyricum DSP1 in repeated batch
Provedor de dados: 69
Autores: Szymanowska-Powalowska,Daria.
Background The production of biofuels from renewable energy sources is one of the most important issues in industrial biotechnology today. The process is known to generate various by-products, for example crude glycerol, which is obtained in the making of biodiesel from rapeseed oil. Crude glycerol may be utilized in many ways, including microbial conversion to 1,3-propanediol (1,3-PD), a raw material for the synthesis of polyesters and polyurethanes. Results The paper presents results of a study on the synthesis of 1,3-propanediol from crude glycerol by a repeated batch method with the use of Clostridium butyricum DSP1. Three cycles of fermentation medium replacement were carried out. The final concentration of 1,3-PD was 62 g/L and the maximum...
Tipo: Journal article
Palavras-chave: Environmental stress; Fermentation; High-performance liquid chromatography.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582014000600011

Production of extracellular alkaline protease by new halotolerant alkaliphilic Bacillus sp. NPST-AK15 isolated from hyper saline soda lakes
Provedor de dados: 69
Autores: Ibrahim,Abdelnasser S.S; Al-Salamah,Ali A; Elbadawi,Yahya B; El-Tayeb,Mohamed A; Ibrahim,Shebl Salah Shebl.
Background Alkaline proteases are among the most important classes of industrial hydrolytic enzymes. The industrial demand for alkaline proteases with favorable properties continues to enhance the search for new enzymes. The present study focused on isolation of new alkaline producing alkaliphilic bacteria from hyper saline soda lakes and optimization of the enzyme production. Results A new potent alkaline protease producing halotolerant alkaliphilic isolate NPST-AK15 was isolated from hyper saline soda lakes, which affiliated to Bacillus sp. based on 16S rRNA gene analysis. Organic nitrogen supported enzyme production showing maximum yield using yeast extract, and as a carbon source, fructose gave maximum protease production. NPST-AK15 can grow over a...
Tipo: Journal article
Palavras-chave: Alkaline protease; Alkalophiles; Bacillus sp; Fermentation; Optimization.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000300015

Potential use of Lactobacillus casei TISTR 1500 for the bioconversion from palmyra sap and oil palm sap to lactic acid
Provedor de dados: 69
Autores: Chooklin,Supasit; Kaewsichan,Lupong; Kaewsrichan,Jasadee.
Lactic acid is a product that finds several applications in food, cosmetic, pharmaceutical and chemical industries. The main objective of this work is to evaluate potential use of the sap from palmyra (Borassus flabellifer Linn.) and oil palm (Elaeis guineensis) as substrate for lactic acid production by Lactobacillus casei TISTR 1500. The effects of acid hydrolysis, pH control and nutrient supplement of palmyra sap and oil palm sap on fermentation performance were investigated. It was found that lactic acid fermentation using palmyra sap was not significantly affected by either acid hydrolysis or pH control. The addition of MRS increased biomass and product yield. The final lactic acid concentration, dry cell weight and productivity were increased by...
Tipo: Journal article
Palavras-chave: Fermentation; Lactic acid; Lactobacillus casei TISTR 1500; Oil palm sap; Palmyra sap.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000500010

Production and stability studies of the bioemulsifier obtained from a new strain of Candida glabrata UCP 1002
Provedor de dados: 69
Autores: Asfora Sarubbo,Leonie; Moura de Luna,Juliana; de Campos-Takaki,Galba Maria.
Evaluation of both tenso-active and emulsifying activities indicated that a biosurfactant was produced by the newly isolated and promising strain Candida glabrata isolated from mangrove sediments. The extracellular water-soluble emulsifying agent was isolated and identified as a heteropolymer. The maximum of bioemulsifier production was observed when the strain was grown on soluble and insoluble substrates cotton seed oil plus glucose, reaching values of 10.0 g/l after 144 hrs at 200 rpm. The cell-free culture broth containing the examined agent lowered the surface tension of the medium to 31 mN/m. Stable and compact emulsions with emulsifying activity of 75% of cotton seed oil were detected. The emulsification capacity remained practically unaltered...
Tipo: Journal article
Palavras-chave: Biosurfactant; Candida; Emulsifier; Fermentation; Glucose; Vegetal oil.
Ano: 2006
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000400008

Lagoas de estabilização natural para armazenamento de dejetos líquidos de suínos.
Provedor de dados: 14
Autores: KONZEN, E. A.; BARROS, L. C. de.
Desenvolvimento das lagoas de bioestabilizacao; Impermeabilizacao de lagoas com manta de plastico.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Suinos; Dejetos; Manure.; Fermentação.; Fermentation; Swine; Wastes.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/478844

Kojic acid: Production of kojic acid from crude glycerol.
Provedor de dados: 14
Autores: DAMASO, M. C. T.
Kojic acid production using selected filamentous fungus isolated from the Brazilian biodiversity. The production is carried out in a submerged fermentation with crude glycerol (glycerin), a biodiesel co-product, or a commercial standard glycerol as the sole source of carbon.
Tipo: Folders
Palavras-chave: Ácido kójico; Kojic acid; Fermentation; Glycerol.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1132996

Fermentação e secagem de amêndoas de cupuaçu para agroindústrias familiares.
Provedor de dados: 14
Autores: SOUZA, J. M. L. de; CARTAXO, C. B. da C.; ANDRADE NETO, R. de C.; MOURA, S. I. A.; MACIEL, V. T.; CRODA, J. P.; PIRES, F. C.; SARAIVA, L. S.; ARAÚJO, A. P.
As sementes do cupuaçu (Theobroma grandifl orum Schum (Willd. ex Spreng.) K. Schum.) possuem características botânicas e propriedades químicas similares às sementes do cacau (Theobroma cacao L.), e o seu processamento agrega valor à produção agroflorestal. Após os processos de fermentação e secagem das sementes recém-despolpadas pode-se produzir entre outros produtos o liquor, que é um análogo do chocolate e pode ser empregado na formulação de bolos, biscoitos e sorvetes, além da possibilidade de uso da gordura para fi ns alimentícios e cosméticos.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Cupuassu; Almendras; Tecnología de procesamiento; Fermentación; Secado; Cupuaçu; Theobroma Grandiflorum; Amêndoa; Processamento; Fermentação; Secagem; Tecnologia de Alimento; Indústria Agrícola; Almonds; Processing technology; Fermentation; Drying; Agricultural industry.
Ano: 2018
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1091444

Lignocellulosic biomass: Removal of fermentation inhibitors in lignocellulosic biomass liquors.
Provedor de dados: 14
Autores: RODRIGUES, C. M.
Processes for removal of fermentation inhibitors in lignocellulosic biomass liquors using medium pressure columns with regenerable polymeric/hydrophobic stationary phases and use of chemically green solvents such as water and ethanol.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Sugarcane; Solvents; Fermentation; Renewable resources.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1133085

Acetoin: Production of acetoin from glycerin.
Provedor de dados: 14
Autores: SALUM, T. F. C.
Fermentative process for acetoin production from crude glycerin from biodiesel production using a new bacterial strain.
Tipo: Folders
Palavras-chave: Biocombustível; Acetoin; Fermentation; Biodiesel.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1132995

Vinificação de uvas tintas | Vinificação de uvas brancas.
Provedor de dados: 14
Autores: BEN, R. L.; MONTEIRO, R.; DIDONE. T. B.; MANFROI, L.
Este folder informativo trata do processo de vinificação de uvas tintas e brancas, ou seja, o conjunto de operações técnicas que transformam as uvas em vinho. Aborda todas as fases do processo, deste a higienização de equipamentos e colheita das uvas até a filtração e o engarrafamento do vinho.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Vinificação; Uvas tintas; Uvas brancas; Elaboração; Dtqprocessamento; Uva; Vinho; Colheita; Fermentação; Grapes; Wines; Winemaking; Wine grapes; Fermentation.
Ano: 2012
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1004464

FERMENTAÇÃO positiva do café: "Sprouting Process".
Provedor de dados: 14
Este vídeo ensina como fazer a fermentação positiva do café com o método Sprouting Process.
Tipo: Dia de Campo na TV (INFOTECA-E)
Palavras-chave: Sprouting process; Fermentação positiva; Embrapa Rondônia; Porto Velho (RO); Rondônia; Âmazônia Ocidental; Western Amazon; Café Robusta; Coffea Canephora; Coffee beans; Fermentation.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1130939

Xylonic acid: production of xylonic acid by yeast.
Provedor de dados: 14
Autores: ALMEIDA, J. R. M. de.
Recombinant yeast strains of Komagataella phaffii (Pichia pastoris) and Saccharomyces cerevisiae producers of xylonic acid from xylose in sugarcane biomass hydrolysate.
Tipo: Folders
Palavras-chave: Xylonic acid; Fermentation; Strains; Yeasts.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1133059

Qualidade fermentativa e valor nutritivo das silagens com diferentes proporções de milheto e girassol.
Provedor de dados: 14
Autores: TONUCCI, R. G.; CHAVES, A. K. de L.; GUEDES, F. L.
Resumo - Objetivou-se avaliar a qualidade fermentativa e o valor nutritivo da silagem de milheto e girassol nas proporções de 100:0; 75:25; 50:50; 25:75 e 0:100, totalizando cinco tratamentos e três repetições. Foram utilizados minissilos de PVC e adotou-se delineamento experimental inteiramente casualizado. A abertura dos minissilos foi realizada aos 90 dias. Os dados foram submetidos à análise de variância e estimadas regressões, aplicadas no teste de Tukey (P&lt;0,05) utilizando o programa do pacote estatístico do Statistical Analysis System - SAS® (SAS Institute, 2004). Verificou-se que apenas a recuperação de matéria seca e celulose apresentaram efeito quadrático com pontos de mínima de 93,1% e máxima 29,91%, respectivamente. A inclusão de girassol...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Extrato etéreo; Nitrogênio amoniacal; Ammoniacal nitrogen; Ether extract; Digestibilidade; Fermentação; Proteína Bruta; Crude protein; Digestibility; Fermentation.
Ano: 2018
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1101499

Enzymes: Production of lipase by a bacterial strain.
Provedor de dados: 14
Autores: SALUM, T. F. C.
Bacterial strain from Brazilian biodiversity able to produce lipases that can be applied in different industries.
Tipo: Folders
Palavras-chave: Bacterial strain; Lípase; Biomass; Fermentation.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1133001

Metabolism of cyanobacteria in anaerobic marine sediments.
Provedor de dados: 5
Autores: Stal, L; Krumbein, W.
Two cyanobacteria isolated from marine microbial mats metabolized endogenous carbon reserves anaerobically in the dark. Microcoleus chthonoplastes reduced elemental sulfur to sulfide and Oscillatoria sp. additionally produced lactate in the absence of elemental sulfur. Under nitrogen fixing conditions, however, no sulfur reduction occurs. Lactate fermentation appeared to be the mechanism of anaerobic carbon degradation under these conditions. With a nitrogenase-reducible substrate, e.g. acetylene, added, lactate fermentation as well as sulfur reduction stops in cultures of Oscillatoria containing nitrogenase. In this case only ethylene production was observed. These cyanobacteria seem to possess the capability to carry out anaerobic dark metabolism...
Tipo: Text
Palavras-chave: Oscillatoria; Microcoleus chthonoplastes; Cyanophyta; Metabolism; Chemical cycles; Algae; Anoxic sediments; Anaerobic respiration; Algal mats; Biogeochemistry; Fermentation; Sulfur; Nitrogen fixation; Nitrogen cycle.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-974.pdf

Microbial hydrogen production potential in shallow oceanic nepheloid layers.
Provedor de dados: 5
Autores: Schwarz, J; Loeblich, L; Schropp, S.
Seawater samples taken from shallow suspended particle maxima (20-57m) at or near the base of the surface mixed layer in various oceanic areas were tested for their potential to produce hydrogen (H sub(2)) gas. Results suggest that hydrogen can be bacterially produced through a fermentative process in microanaerobic niches within particulate matter. The organisms responsible for this process are ubiquitous within the temperate and tropical waters sampled. Enumeration of potential H sub(2)-producing bacteria using fluorescent antibody techniques yielded a maximum at the base of the surface mixed layer, the same depth where the greatest H sub(2) gas production potential was observed. Hydrogen-producing bacteria comprised up to 15% of the total bacterial...
Tipo: Text
Palavras-chave: Suspended particulate matter; Sea water; Gases; Biogeochemistry; Biogenic material; Hydrogen; Anaerobic bacteria; Nepheloid layer; Fermentation.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-962.pdf

Interrelations entre des communautes mixtes de bacteries anaerobies isolees de sediments marins
Provedor de dados: 5
Autores: Marty, D.
The mineralization of cellulose was examined in mono and cocultures of marine anaerobic bacteria (cellulolytic bacteria, fermentative non-cellulolytic bacteria and methane-producing bacteria). These studies displayed interactions between these groups of microorganisms: inhibition relationships (inhibition of methanogens during active growth of fermentative bacteria) and syntrophic relationships (growth of fermentative non-cellulolytic bacteria depended on metabolites produced by cellulolytic bacteria; increased in rate of cellulose hydrolysis in presence of fermentative non-cellulolytic bacteria; interspecies H sub(2) transfer reaction between fermentative bacteria and methane-producing bacteria).
Tipo: Text
Palavras-chave: Biogeochemistry; Sedimentation; Sediments; Fermentation; Mineralization; Cellulose; Methanogenesis; Interspecific relationships; Anaerobic bacteria.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-948.pdf

Occurrence and role of lactic acid bacteria in seafood products
Provedor de dados: 5
Autores: Leroi, Francoise.
Lactic acid bacteria (LAB) in fish flesh has long been disregarded because the high post-mortem pH, the low percentage of sugars, the high content of low molecular weight nitrogenous molecules and the low temperature of temperate waters favor the rapid growth of pH-sensitive psychrotolerant marine Gram-negative bacteria like Pseudomonas, Shewanella and Photobacterium. In seafood packed in both vacuum (VP) and modified atmosphere (MAP) packaging commonly CO2 enriched, the growth of the Gram-negative aerobic bacteria group (predominantly pseudomonads) is effectively inhibited and the number reached by LAB during storage is higher than that achieved in air but always several log units lower than the trimethylamine oxide (TMA-O) reducing and CO2-resistant...
Tipo: Text
Palavras-chave: Lactic acid bacteria; Fish; Spoilage; Biopreservation; Probiotic; Fermentation.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00006/11750/8447.pdf

Biomass distribution and physiological capabilities of bacteria in the water column above a sea grass system.
Provedor de dados: 5
Autores: Velimirov, B; Herndl, G; Kavka, G.
The distribution pattern of bacteria in the water column above and within a Posidonia oceanica bed near Ischia (off the Gulf of Naples) was investigated and correlated with DOC and POM data for autumn and winter. Data from samples of 5 stations along a transect from shallow to deep showed rather low bacterial densities (10 super(4).ml super(-1)) for both seasons. The number of attached bacteria was higher in late winter as compared to autumn when the leaves are shed from the stands. Except for occasional peaks DOC ranged between 1.5 and 4.5 mg C/1 while POM concentrations ranged form 4 to 14 mg AFDW.1 super(-1). Hydrolytic capabilities of isolated bacterial colonies showed that more carbohydrate substrates could be fermented in winter as compared to...
Tipo: Text
Palavras-chave: Posidonia oceanica; Microorganisms; Physiology; Seasonal distribution; Algae; Bacteria; Particulate organic matter; Metabolism; Water column; Fermentation; Sea grass.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-954.pdf

Purification of the exopolysaccharide produced by Alteromonas infernus: identification of endotoxins and effective process to remove them
Provedor de dados: 5
Autores: Grivaud-le Du, Alicia; Zykwinska, Agata; Sinquin, Corinne; Ratiskol, Jacqueline; Weiss, Pierre; Vinatier, Claire; Guicheux, Jerome; Delbarre-ladrat, Christine; Colliec-jouault, Sylvia.
Alteromonas infernus bacterium isolated from deep-sea hydrothermal vents can produce by fermentation a high molecular weight exopolysaccharide (EPS) called GY785. This EPS described as a new source of glycosaminoglycan-like molecule presents a great potential for pharmaceutical and biotechnological applications. However, this unusual EPS is secreted by a Gram-negative bacterium and can be therefore contaminated by endotoxins, in particular the lipopolysaccharides (LPS). Biochemical and chemical analyses of the LPS extracted from A. infernus membranes have shown the lack of the typical LPS architecture since 3-deoxy-d-manno-oct-2-ulopyranosonic acid (Kdo), glucosamine (GlcN), and phosphorylated monosaccharides were not present. Unlike for other...
Tipo: Text
Palavras-chave: Marine Alteromonas infernus; Bacterial exopolysaccharide; Endotoxin; Characterization; Purification; Fermentation; Process.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00397/50818/51601.pdf

Discovery and development of biological agents to control crop pests
Provedor de dados: 82
Autores: Slininger,Patricia J.; Behle,Robert W.; Jackson,Mark A.; Schisler,David A.
Thousands of potential microbial biocontrol agents have been isolated from agricultural fields and crops during research over the last 80 years, yet only a few are in commercial use. Recently, public health and safety concerns about the environmental impact of chemical pesticides have led to consideration of biological control as a natural approach to maintaining crop health. Despite environmental incentives and strong research efforts, commercialization of biocontrol agents has been slow to evolve. The momentum of the chemical industry is difficult to shift, and fermentation processes tend to be more expensive to operate than synthetic chemical processes.Yet there is a demand for biological control products, especially in agricultural niche markets, where...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biopesticide; Biological control; Fermentation; Formulation; Stabilization.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000200001

Position and rate of intestinal fermentation in adult ostrich evaluated by volatile fatty acid
Provedor de dados: 19
Autores: Hongo, Akio; Ishii, Yukiko; Suzuta, Hidetaka; Enkhee, Devee; Toukura, Yuji; Hanada, Masaaki; Hidaka, Satoshi; Miyoshi, Syunzou; 本江, 昭夫; 石井, 友紀子; 鈴田, 英隆; エンヒェー, デヴィ; 藤倉, 雄司; 花田, 正明; 日高, 智; 三好, 俊三.
The study was conducted in Obihiro, Japan to examine the position and rate of intestinal fermentation in three adult ostriches (Struthio camelus) with mean liveweight of 103±4.7 kg. The ostriches were fed fresh leaves of orchardgrass (Dactylis glomerata). At twenty five hours before the slaughter, they ingested 100 g fresh leaves mixed with 20 g oblong strips (2mm wide and 30 mm long) of a filter paper, in which chromium oxide was absorbed at a rate of 40 %. After the slaughter, small intestine, cecum and large intestine were cut into 3, 2 and 7 pieces, respectively, with the same length in each organ. Crude ash content in digesta samples was the highest in muscular stomach (90.1±1.17 %), compared with 27-51 % in other organs of glandular stomach, small...
Palavras-chave: Adult ostrich; Chromium; Colon; Fermentation; Volatile fatty acid; ダチョウ成鳥; クロム; 結腸; 醗酵; 揮発性脂肪酸.
Ano: 2006
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/92

Enzymatic Hydrolysis and Ethanol Fermentation of By-Products from Potato Processing Plants
Provedor de dados: 19
Autores: YAMADA, Sunao; SHINOMIYA, Noriyuki; OHBA, Kiyoshi; SEKIKAWA, Mitsuo; ODA, Yuji; 関川, 三男; 小田, 有二.
By-products from potato processing plants were liquefied and partially saccharified using three commercially available enzymes, followed by ethanol fermentation by yeast and then hydrolysis by glucoamylase. From 12% (w/w) of fresh potato peel, about 20 mg/mL ethanol was formed in the supernatant via amylase, pectinase, or an enzyme complex; this yield was slightly increased with combinations of these enzymes. Supplementation of substandard mash to potato peel (1:1) as a raw material enhanced the amount of ethanol formation, increasing it to approximately 50 mg/mL by the mixture of all three enzymes. After the addition of yeast and glucoamylase to the partially saccharified material, ethanol formation proceeded gradually and slowed in 12 h with the...
Palavras-chave: Potato peel; Substandard mash; Ethanol; Fermentation.
Ano: 2009
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2962

豆腐製造過程で生じる豆腐ホエーの利用
Provedor de dados: 19
Autores: 小嶋, 道之; 青山, 将; KOJIMA, Michiyuki; AOYAMA, Masaru.
豆乳100ml に市販の0.03ml 酢酸を加えてオートクレーブ(121℃, 15分間) すると, 大豆タンパ ク質は凝固した｡ロ液は, 淡黄色の酸処理豆腐ホエーであり, この酸処理豆腐ホエー(pH4.0前後) で乳酸菌を培養することができた｡また, 酸処理した凝固タンパク質は家畜の飼料として利用可能 であった｡この酸処理手法は, 豆腐製造過程での廃液(豆腐ホエー) にも利用でき, 未利用資源で ある豆腐ホエーが, 乳酸菌培養用の培地として有効であることを明らかにした｡また, 豆腐残査 (OKARA) に添加して, 保存期間の延長が可能であった｡ In the current studies, we found that addition of 0.03 ml acetic acid to 100 ml soy milk caused it to solidify when autoclaved for 15 min at 121℃. The whey remaining after this process is light yellow in color, has a pH of approximately 4.0, and acted as an effective medium for culturing lactic acid bacteria. To investigate the potential of the solidified protein as a feed for domestic animals, the protein was fed to a Holstein cow over a week and was usually more than 95% consumed....
Palavras-chave: 豆腐製造; 豆腐ホエー; 酢酸処理; 乳酸菌発酵; オカラ; Tofu making; Tofu whey; Acetic acid treatment; Lactic acid bacteria; Fermentation; OKARA.
Ano: 2004
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/88

Ensayos de fermentación de cultivo de bioyogurt, utilizando dos agentes neutralizantes
Provedor de dados: 20
Autores: Cisneros, F.; Sedrés, J.M.
Se ensayó la fermentación para concentrados con cultivo de Bioyogurt, utilizando NaOH y CaCO3  como neutralizantes de la acidez, y se observó su efecto sobre la población final y la viabilidad. La fermentación se realizó en un medio semi- sintético. La solución de NaOH 4N se adicionó automáticamente durante el proceso para mantener el pH = 6,20 y el CaCO3  en polvo, se adicionó en porciones, según la variación de la acidez. Con ambas alternativas se obtuvo una población total final entre 1014  y 1016  UFC/mL, favorable para el proceso de preparación de concentrados bacterianos. Desde el punto de vista práctico, el uso del CaCO3  sólido presentó dificultades de manipulación y mayor riesgo de contaminación que el NaOH.
Tipo: Journal Contribution
Palavras-chave: Hydroxides; Growing ponds; Fermentation; Bacterial diseases.
Ano: 2008
URL: http://hdl.handle.net/1834/4713

Empleo de cultivo iniciador para la preservación de un producto cárnico fresco
Provedor de dados: 20
Autores: Cepero, Y.; Beldarraín, T.; Bruselas, A.; Vergara, N.; Moya, Y.; Rodríguez, F.
El objetivo del presente trabajo fue determinar la durabilidad de un producto cárnico fresco empleando cultivo iniciador. Se elaboraron butifarras frescas con y sin cultivo iniciador que se almacenaron a temperaturas entre 4 y 8 ºC. Se evaluaron las principales propiedades industriales de 4 cultivos iniciadores para seleccionar el cultivo iniciador. Se evaluó el proceso de fermentación de la carne a dos niveles para determinar la dosis de adición del cultivo. Se realizaron determinaciones físico-químicas, microbiológicas y sensoriales de los productos. Se seleccionó el cultivo iniciador Lactobacillus casei  a 2 % para su uso como bioconservador en la butifarra fresca. La durabilidad de la butifarra fresca a temperaturas entre 4 y 8 ºC empleando...
Tipo: Journal Contribution
Palavras-chave: Shelf life; Fermentation; Sausages; Fermented product starters; Lactobacillus casei.
Ano: 2008
URL: http://hdl.handle.net/1834/4845

Séminaire de formation en groupe sur les techniques améliorées de traitement de conservation et de transformation du poisson et des produits halieutiques
Provedor de dados: 20
Autores: DIOP, M. Y.
Tipo: Journal Contribution
Palavras-chave: Fish; Hygiene; Fermentation; Trade; Packing fishery products; Conservation of salt; Fishery economics; Fish; Hygiene; Fermentation; Trade; Http://aims.fao.org/aos/agrovoc/c_15903; Http://aims.fao.org/aos/agrovoc/c_3739; Http://aims.fao.org/aos/agrovoc/c_2855; Http://aims.fao.org/aos/agrovoc/c_7848.
Ano: 2007
URL: http://hdl.handle.net/1834/1716

Séminaire de formation en groupe sur les techniques améliorées de traitement de conservation et de transformation du poisson et des produits halieutiques
Provedor de dados: 20
Autores: DIOP, M. Y.
Tipo: Journal Contribution
Palavras-chave: Fish; Hygiene; Fermentation; Trade; Packing fishery products; Conservation of salt; Fishery economics; Fish; Hygiene; Fermentation; Trade; Http://aims.fao.org/aos/agrovoc/c_15903; Http://aims.fao.org/aos/agrovoc/c_3739; Http://aims.fao.org/aos/agrovoc/c_2855; Http://aims.fao.org/aos/agrovoc/c_7848.
Ano: 2007
URL: http://hdl.handle.net/1834/1716

Evaluación de la fermentación láctica en un yogur dietético
Provedor de dados: 20
Autores: Perea, J.; Brito, A.I.
Se evaluó la cinética de fermentación ácido láctica desarrollada por los cultivos probióticos Bifigur y Bioyogur, en una leche descremada, con adición indistinta de fibras dietéticas solubles (inulina) e insolubles (salvado de trigo). Las evaluaciones se realizaron tomando muestras de la leche recién inoculada y cada 0,5 h hasta la coagulación para expresar gráficamente los valores medios de acidez y pH contra el tiempo. A las 24 h se determinó la viabilidad de los microorganismos inoculados. Las curvas de fermentación presentaron un comportamiento típico, con mayor cinética en la variante con salvado de trigo inoculada con cultivo de Bioyogur, con respecto a la que utilizó inulina y cultivo de Bifigur. La inulina mostró a su vez propiedades estimuladoras...
Tipo: Journal Contribution
Palavras-chave: Food; Microorganisms; Fermentation.
Ano: 2008
URL: http://hdl.handle.net/1834/4721

Evolution du pH et de la température au cours de la transformation artisanale du cymbium (voluté). Essai sur les perspectives de valorisation du produit transformé
Provedor de dados: 20
Autores: Diouf, A.
L’étude porte sur l’évolution du pH et de la température au cours de la transformation artisanale du Cymbium, ainsi que sur les perspectives de valorisation du produit transformé. Les expérimentations menées au site de transformation artisanale de Joal ont permis de constater que :   Après 12 heures de séjour en bac (1ère nuit), le Cymbium est encore en phase de rigor mortis. Le pH moyen affiché à l’issue de cette première nuit est de 7,6 ; donc proche de celui du mollusque vivant ;   Le pH moyen du produit fini est légèrement acide et se situe entre 6,3 et 6,4. Donc le yeet de Joal est très peu fermenté ;   Les difficultés de séchage notées sont dues : soit au manque de maîtrise des paramètres tels que, la température, l’humidité relative et la vitesse de...
Tipo: Theses and Dissertations
Palavras-chave: Processing fishery products; Fermentation; Biology; Marketing; Drying; Temperature; Statistics; Ph; Marketing; Biology; Fermentation; Drying; Temperature.
Ano: 2008
URL: http://hdl.handle.net/1834/3007

Parámetros de conservación del tofu proteolizado fermentado
Provedor de dados: 20
Autores: Mejías, E.; Ruíz, A.; Silveira, I.; Padrón, X.; Lafargue, D.; Fajo, A.
Se determinaron las condiciones y parámetros de conservación del tofu proteolizado fermentado por un período no mayor de 15 días. Se obtuvo el tofu a partir de leche de soya parcialmente proteolizada con papaína grado alimentario a la cual se le añadió sales de calcio y de magnesio. El tofu proteolizado se envasó en potes de poliestireno que se inocularon con un cultivo láctico y se incubaron a 23 ± 1 ºC. Se ensayó el empleo del sorbato de potasio y la pasteurización del tofu proteolizado, una vez finalizada la fermentación. Los productos se colocaron a 4 y 10 ºC por 15 días y se analizaron química, microbiológica y sensorialmente. El tofu proteolizado fermentado se puede conservar en potes de poliestireno de 100 mL con tapa a una temperatura de 4 ºC por...
Tipo: Journal Contribution
Palavras-chave: Conservation; Analysis; Temperature; Tofu; Fermentation; Proteolysis; Cold storage.
Ano: 2008
URL: http://hdl.handle.net/1834/4888

Changes in the isoflavone profile and in the chemical composition of tempeh during processing and refrigeration
Provedor de dados: 86
Autores: Ferreira,Márcia Pires; Oliveira,Maria Cristina Neves de; Mandarino,José Marcos Gontijo; Silva,Josemeyre Bonifácio da; Ida,Elza Iouko; Carrão-Panizzi,Mercedes Concórdia.
The objective of this work was to analyze changes in the isoflavone profile, determined by high performance liquid chromatography, at different processing stages and after refrigeration of tempeh. For tempeh production, clean soybean grains from cultivars BR 36 (low isoflavone content) and IAS 5 (high) were dehulled, and the separated cotyledons were hydrated and then cooked in boiling water for 30 min. Spores of the fungus Rhizopus microsporus var. oligosporus were inoculated in the cooked and cooled cotyledons, and incubated at 32ºC for 6, 12, 18, and 24 hours in perforated polypropylene bags, for fermentation. The resulting tempeh was stored at 4ºC for 6, 12, 18, and 24 hours. After 24-hour fermentation, isoflavone glucosides were 50% reduced, and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhizopus microsporus var. oligosporus; Aglycone; Fermentation; Functional food; High performance liquid chromatography; Malonyl.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011001100018

Extended storage of cold raw milk on yogurt manufacturing
Provedor de dados: 86
Autores: Fagnani,Rafael; Schuck,Josiane; Botaro,Bruno Garcia; Santos,Fernando Cesar dos.
Abstract: The objective of this work was to evaluate the effect of the extended cold storage of raw milk on the kinetics of fermentation on yogurt production, as well as on the product’s microbiological and physicochemical properties during shelf life. Three treatments were evaluated: yogurts made with raw milk stored for 4, 72, and 168 hours. Kinetics of fermentation was assessed through the lactic acid production rate, growth rate of Streptococcus thermophilus and Lactobacillus bulgaricus, and time to reach pH 5.0 and 4.5. The physicochemical and microbiological characteristics of raw milk and yogurts were also analyzed during cold storage at 4°C. The microbial quality of raw milk was affected by the storage time of 168 hours, with a decreasing tendency...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactobacillus bulgaricus; Streptococcus thermophilus; Fermentation; Kinetics; Psychrotrophs.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000200104

The effects of inorganic salts on biosynthesis of pectinolytic enzymes by Aspergillus Niger
Provedor de dados: 31
Autores: Mojsov,   Kiro.
The paper examines effects of different inorganic salts in an apple pulp base on the production of pectinolytic enzymes with the aim of optimizing the medium for maximal enzyme production. The apple pulp  combined with corn flour and simple mineral salts was used as a nourishing base in submerged production of  pectinolytic enzymes by the  fungus Aspergillus niger MK-15. The growth of the microorganism (dry weight) on different sources of nitrogen showed  maximum dry weight with (NH4)2HPO4. The growth of the microorganism (dry weight) on different concentration of (NH4)2HPO4  (by 0.2% to 0.8%) provided maximal dry weight with 0.7% (NH4)2HPO4. The different inorganic salts (sources of nitrogen) on base  stimulated the production of pectinolytic enzymes and...
Tipo: Journal Article
Palavras-chave: Apple pulp; Fermentation; Inorganic salts; Pectinolytic enzymes; Aspergillus niger; Agribusiness; Research and Development/Tech Change/Emerging Technologies; L65.
Ano: 2010
URL: http://purl.umn.edu/94732

Broiler litter reutilization applying different composting concepts
Provedor de dados: 89
Autores: Sonoda,LT; Moura,DJ; Bueno,LGF; Cordeiro,DC; Mendes,AS.
Broiler litter reutilization consists in using the same bedding material to cover the house floor for several broiler flocks. This requires the litter to be treated in order to reduce the amount of microorganisms, according to international recommendations. The aim of this study was to evaluate two methods of broiler litter fermentation based on composting concepts and their effect on litter and the air quality during fermentation in small-scale broiler houses. The experiment was carried out in the Environmental Laboratory I of the School of Agricultural Engineering of the State University of Campinas, utilizing six small-scale houses. Litter from the same grow-out (one, two or three) was distributed in two experimental houses, where it was either piled or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Nitrogen; Waste treatment; Broiler.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300011

Processed Canola Meal Effects on the Traits of Egg, Fertility, Cecal Microbial Population and Carcass of Broiler Breeder Hens
Provedor de dados: 89
Autores: Dolatifard,A; Jafari,MA.
ABSTRACT The aim of the current research was to study the effect of canola meal processing methods on the traits of egg, fertility, cecal microbial population, and the carcass of broiler breeder hens. Canola meal was processed by fermentation and enzymatic hydrolysis methods, then was fed to the hens. Four hundred and fifty broiler breeder hens of Ross strain weighing 3300±150 g (40 weeks) were used for 12 weeks. A completely randomized design was used with 6 treatments (unprocessed, processed by Lactobacillus Plantarum, Bacillus Subtilis, Aspergillus Oryzae, Neurospora Sitophila, and Alcalase enzyme) and 5 replications. Fifteen hens were included in each pen. The data collected were analyzed using the LSmeans procedure of SAS software. The treatment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caecum; Fermentation; Fertility; Processing.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400308

Effect of different fermentation processes on the phytochemical properties of green table Olives
Provedor de dados: 94
Autores: Rababah,Taha M.; Al- u’datt,Muhammad; Al-Mahasneh,Majdi; Gammoh,Sana; Mahili,Hana’a; Ajouly,Tha’er.
Abstract  Most olive varieties are grown in Jordan using Baladi, Nabali, Crosodi and k18 table olives. This study evaluated the effect of de-bittering fermentation methods on the total phenolic, flavonoid contents, and antioxidants. The phytochemical results of fresh and fermented table olives showed significant decrease after fermentation process and during three months of storage. Baladi fresh table olive presented the highest phenol content (350.9mg GAE/100g) followed by Nabali, Crosodi and k18 varieties, respectively. The highest antioxidant value was found in Baladi variety (42.2%) followed by k18, Crosodi and Nabali varieties, respectively. Crosodi fresh table olive presented the highest flavonoid content (107.4 mg CE/100G), followed by k18, Nabali...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Table olives; Phytochemicals; Fermentation; De-bittering.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000100901

Stability of enzyme complex solid-state fermentation subjected to the processing of pelleted diet and storage time at different temperatures
Provedor de dados: 96
Autores: Moura,Guilherme de Souza; Lanna,Eduardo Arruda Teixeira; Donzele,Juarez Lopes; Falkoski,Daniel Luciano; Rezende,Sebastião Tavares de; Oliveira,Maria Goreti de Almeida; Albino,Luiz Fernando Teixeira.
ABSTRACT The effects of processing of pelleted diets and their storage time on the stability of the enzyme complex SSF (solid-state fermentation) were evaluated. Two diets were formulated with the same nutritional composition, differing only in the Schizochytrium sp. levels (0 g kg-1 and 50 g kg-1). The samples were collected during the following processing steps: mixing, then pelleting, and then oven. To evaluate the storage time, the diet ready after drying was considered as day 1. On this day, two samples were obtained, being one kept in a room with ambient temperature of 25 °C and another stored in freezer at -18 °C. At 15, 30, 45, and 60 days, sub-samples were taken. All samples from the processing step and storage time were sent to the laboratory and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal nutrition; Feed additive; Fermentation; Microbial additive.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016001200731

Chemical and bromatological characteristics of elephant grass silages with the addition of dried cashew stalk
Provedor de dados: 96
Autores: Rêgo,Margareth Maria Teles; Neiva,José Neuman Miranda; Rêgo,Aníbal Coutinho do; Cândido,Magno José Duarte; Carneiro,Maria Socorro de Souza; Lôbo,Raimundo Nonato Braga.
The objective of this study was to evaluate the nutritive value of elephant grass (Pennisetum purpureum, Schum.) silages with the addition of 0, 4, 8, 12 and 16% dried cashew stalk (Anacardium occidentale L.) - DCS, based on the fresh matter. A randomized complete design with four replications was used. Twenty 210 L plastic drums were used as experimental silos. The levels were determined of the dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), hemicellulose, ether extract (EE), total carbohydrates (TC), non-fibrous carbohydrates (NFC), neutral detergent insoluble nitrogen (NDIN,% total N), acid detergent insoluble nitrogen (ADIN, % total N), pH values, ammonia nitrogen (in percentage of the total nitrogen,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Industrial by-products; Nutritive value; Pennisetum purpureum.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000200004

Aerobic stability of sugar cane silages with a novel strain of Lactobacillus sp. isolated from sugar cane
Provedor de dados: 96
Autores: Ávila,Carla Luiza da Silva; Pinto,José Cardoso; Oliveira,Dâmiany Pádua; Schwan,Rosane Freitas.
The objective of this research was to evaluate the effect of the addition of two Lactobacillus strains on the aerobic stability of the sugar cane (Saccharum spp.) silages. The experiment was carried out in a completely randomized design with three replicates in split-plot in time scheme, so that the treatments (silages without inoculant and with novel strain or commercial inoculants) were randomized on plot and in times of aerobic evaluation of the silages (zero, two, four, and six days after the opening of the silos) as subplots. The loss of stability of silages was continuous during the time of aerobic exposure. Inoculants influenced the changes in populations of lactic acid bacteria and yeasts and in the ammoniacal nitrogen, acetic acid and ethanol...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acetic acid; Fermentation; Lactic acid; Microbiology.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000200003

Bromatological and fermentative characteristics of elephant grass silages with the addition of annato by-product
Provedor de dados: 96
Autores: Rêgo,Margareth Maria Teles; Neiva,José Neuman Miranda; Cavalcante,Maria Andréa Borges; Cândido,Magno José Duarte; Clementino,Rossana Herculano; Restle,João.
The objective of the present study was to evaluate the nutritional value of elephant grass (Pennisetum purpureum, Schum.) silages with the addition of 0; 4; 8; 12 and 16% of the by-product from SPU annato (Bixa orellana, L.) based on natural matter. A complete random design was used with four replications. The nutritional composition, pH, ammonical nitrogen and lactic, acetic, propyonic and butyric acids were determined. Levels of annato by-product had an increasingly linear effect on contents of dry matter, organic matter, crude protein, ether extract, non-fibrous carbohydrates, propionic acid and ammonical nitrogen. The insoluble nitrogen contents in detergent and acid detergent, calculated on the percentage of total nitrogen and lactic, acetic and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bixa orellana; By-product; Ensilage; Fermentation.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000900007

Intake and performance of feedlot cattle fed diets based on high and low Brix sugar cane with or without calcium oxide and corn silage
Provedor de dados: 96
Autores: Magalhães,Felipe Antunes; Valadares Filho,Sebastião de Campos; Menezes,Gustavo Chamon de Castro; Gionbelli,Mateus Pies; Zanetti,Diego; Machado,Marcelo Grossi; Pina,Douglas dos Santos; Komura,Koiti.
The objective of this study was to evaluate low and high Brix diets, treated or not with 5 g of calcium oxide per kg of natural matter, and corn silage on intake, digestibility and performance of beef cattle. Forty cattle with initial body weight (BW) of 350 kg were used: five composed the control group, 30 were distributed into random blocks (control) and the other five were distributed in a 5 × 5 incomplete Latin square, with the objective of determining digestibility. The 30 animals evaluated for performance were slaughtered and empty body weight (EPW), carcass dressing and meat cuts were determined. The diet with corn silage (CS) presented the best intake of the other ingredients and the best weight gain, except for neutral detergent fiber intake in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestibility; Ethanol; Fermentation; Treatment.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000600026

Yeast fermented additive enhances broiler growth
Provedor de dados: 96
Autores: Yasar,Sulhattin; Yegen,Mustafa Kemal.
ABSTRACT We investigated the effects of dietary supplementations of yeast (YFA) or non-yeast fermented additives (NYFA) at 5.0 and 10 g kg−1 on the performance parameters and the size of digestive organs of broiler chickens. An isocaloric and isonitrogenous basal diet used as negative control was added with 5.0 or 10.0 g kg−1 of YFA or NYFA. Each of five experimental diets was given to broiler chickens kept in three randomized floor pens, each with 21 birds, from one-day old to 42 days old. Although the feed intake of broiler chickens was not significantly influenced by the diets, there were significant increases in weight gain and improvements in feed conversion ratio and carcass yield in broiler chickens fed the diets supplemented with 5.0 and 10 g kg−1...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Fermentation; Microbial additive; Yeast.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017001000814

Optimization of solid-state fermentation conditions of Bacillus licheniformis and its effects on Clostridium perfringens-induced necrotic enteritis in broilers
Provedor de dados: 96
Autores: Lin,En-Ru; Cheng,Yeong-Hsiang; Hsiao,Felix Shih-Hsiang; Proskura,Witold S.; Dybus,Andrzej; Yu,Yu-Hsiang.
ABSTRACT In the present study, we examined the growth parameters of Bacillus licheniformis in solid-state fermentation (SSF) and evaluated the effects of Bacillus licheniformis-fermented products on Clostridium perfringens-challenged broilers. During four and six days of SSF, the highest viable biomass was observed at 5% glucose, 10% soybean meal, 3% yeast, and 50% initial moisture content. The Bacillus licheniformis SSF products were heat- and acid-resistant. Furthermore, the fermented products were able to inhibit the growth of Clostridium perfringens and Staphylococcus aureus in vitro. In feeding experiments, in a similar manner to the antibiotic treatment group, dietary supplementation of Bacillus licheniformis-fermented products significantly improved...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Disease; Fermentation; Probiotics.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100506

Evaluation of elephant grass silage with the addition of cassava scrapings
Provedor de dados: 96
Autores: Zanine,Anderson de Moura; Santos,Edson Mauro; Dórea,João Ricardo Rebouças; Dantas,Paulo Alfredo de Santana; Silva,Thiago Carvalho da; Pereira,Odilon Gomes.
The objective of this experiment was to evaluate the effects of adding cassava scrapings on gas and effluent losses, dry matter recovery, pH, contents of N-NH3, organic acids and volatile fatty acids and the bromatological composition of elephant grass silages. It was used a randomized complete design, with four levels of cassava scrapings (0, 7, 15 or 30% natural matter) each one with four replications per level. The grass was cut at 50 days of regrowth and ensiled in 15-L silos, equipped with a Bunsen valve to allow gas outflow. The gas losses decreased quadratically with the addition of cassava scrapings, whereas effluent losses decreased linearly. Dry matter recovery increased quadratically with the addition of cassava scrapings. Dry matter (DM)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crude protein; Dry matter; Effluent; Fermentation; Gas.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001200008

Nutritional value of black and white oat cultivars ensiled in two phenological stages
Provedor de dados: 96
Autores: David,Diego Bitencourt de; Nörnberg,José Laerte; Azevedo,Eduardo Bohrer de; Brüning,Gilmar; Kessler,Julcemar Dias; Skonieski,Fernando Reimann.
It was evaluated in this work, crop yield, fermentative quality and nutritional value of the silage of cultivars of white (Avena Sativa L.) and black (Avena Strigosa Schreb) oats cut at two development stages. It was used an experimental randomized block design in a 4 x 2 factorial scheme, consisting of four oat cultivars (two cultivars of black oats: Aveia Preta Comum and UTFP 971; and two cultivars of white oats: ER 91156- 1- 2- 1 and SI 98105- b), with four replicates. The cultivars were ensiled at flowering and dough grain stages. Oat cut at dough grain stage, especially genotypes from white oat, allows the obtainment of a more productive and qualitative silage. Cultivar, genotype, and maturation stage affect protein fractioning and oat silage...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avena spp.; Carbohydrates; Digestibility; Fermentation; Minerals; Total digestible nutrients.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000700003

Evaluation of relative biological efficiency of additives in sugarcane ensiling
Provedor de dados: 96
Autores: Borgatti,Laura Maria Oliveira; Pavan Neto,José; Conrado,André Luiz Veiga; Marino,Carolina Tobias; Meyer,Paula Marques; Rodrigues,Paulo Henrique Mazza.
The objective of this study was to evaluate the effects of adding alkalis on the fermentative pattern, aerobic stability and nutritive value of the sugarcane silage. A completely randomized design with 6 additives in two concentrations (1 or 2%), plus a control group, totalizing 13 treatments [(6×2)+1] with four replications, was used. The additives were sodium hydroxide (NaOH), limestone (CaCO3), urea (CO(NH2)2), sodium bicarbonate (NaHCO3), quicklime (CaO) and hydrated lime (Ca(OH)2). The material was ensiled in 52 laboratory silos using plastic buckets with 12 L of capacity. Silos were opened 60 days after ensiling, when organic acids concentration, aerobic stability and chemical composition were determined. The Relative Biological Efficiency (RBE) was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alkalis; Fermentation; Silage.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000400003

Effect of whey fermented by Enterococcus faeciumin consortium with Veilonella parvulaon ruminal bacteria in vitro
Provedor de dados: 96
Autores: Bezerra,Higor Fábio Carvalho; Oliveira,Juliana Silva de; Santos,Edson Mauro; Queiroz,Augusto César de; Mantovani,Hilário Cuquetto; Pinho,Ricardo Martins Araujo; Oliveira Junior,Jurandir Queiroz de; Costa,Elizabete Cristina Batista da.
The objective of this research was to evaluate the effect of whey fermented by Enterococus faecium in consortium with Veilonella parvula in vitro on ruminal microorganisms in different substrates, with or without monensin. The first experiment was carried out in a completely randomized design, in a 6 × 3 factorial arrangement (six substrates × three whey levels) with two replicates. In experiment two, a 2 × 3 × 4 factorial arrangement (with and without monensin, three foods and four levels of fermented whey) was used, in a randomized design with four replicates, totaling 24 treatments. There was no interaction among the wheys and the substrates in the variable for pectin, starch, and carboxymethyl cellulose. There was a greater growth of amylolytic and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonia; Fermentation; Microbial protein; Monensin; Rumen; Ruminal pH.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000500259

Effects of lines and inoculants on nutritive value and production costs of triticale silages
Provedor de dados: 96
Autores: Sucu,Ekin; Çifci,Esra Aydoğan.
ABSTRACT The current study was undertaken to investigate the ensilage characteristics in triticale lines treated by inoculants and their interaction on fermentation metabolites and rumen degradability. Costs were estimated for growing and feeding whole-crop triticale lines for animal production. Triticale hybrids were harvested at the dough stage of maturity (38% dry matter, DM). Plants were chopped approximately 2 cm after harvest and then treated with inoculants and were ensiled in 1.5-L mini laboratory silos. Two lactic acid bacterial inoculants with enzymes (LAB+enzymes I: Pediococcus acidilactici, Lactobacillus plantarum, and Streptococcus faecium with cellulase, hemicellulase, pentosanase, and amylase; LAB+enzyme II: P. acidilactici, L. plantarum,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cost; Degradability; Enzymes; Fermentation; Lactic acid bacteria; Triticale lines.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000700355

Chemical and bromatological characteristics of elephant grass silages containing a mango by-product
Provedor de dados: 96
Autores: Rêgo,Margareth Maria Teles; Neiva,José Neuman Miranda; Rêgo,Aníbal Coutinho do; Cândido,Magno José Duarte; Carneiro,Maria Socorro de Sousa; Lôbo,Raimundo Nonato Braga.
This study was carried out to evaluate the nutritive value of elephant grass (Pennisetum purpureum, Schum.) silages with the addition of 0, 4, 8, 12 and 16% dehydrated mango (Mangifera indica, L.) by-product (DMB), on the fresh matter basis. A randomized complete design with four replications was used. As experimental silos, 210L plastic drums were used. Dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), hemicellulose (HCEL), ether extract (EE), total carbohydrates (TC), non-fibrous carbohydrates (NFC), neutral detergent insoluble nitrogen (NDIN, % total N), acid detergent insoluble nitrogen (ADIN, % total N), pH values, ammoniacal nitrogen (% total N), lactic acid, acetic acid, butyric acid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Mangifera indica; Nutritive value; Pennisetum purpureum.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000100011

Chemical composition and fermentative parameters of heart of palm waste produced from Alexander Palm ensiled with chemical additives
Provedor de dados: 96
Autores: Bayão,Geraldo Fábio Viana; Marcondes,Marcos Inácio; Queiroz,Augusto César de; Pimentel,Robérson Machado; Cardoso,Lucas Ladeira; Cardoso,Alex Júnio da Silva; Sousa,Katiene Régia Silva; Batalha,Camila Delveaux Araujo.
ABSTRACT The objective of this study was to evaluate the chemical composition and the fermentative parameters of heart of palm waste produced from Alexander Palm, ensiled with chemical additives. Treatments consisted of silage of the sheath with or without calcium oxide. In the silage without calcium oxide, we evaluated the control silage (without additive) and the silage enriched with 5.0 g kg−1 urea (urea). In the silage with calcium oxide, we evaluated the silage enriched with 5.0 g kg−1 calcium oxide (control) and the silage enriched with 5.0 g kg−1 urea and 5.0 g kg−1 calcium oxide (urea). Experimental silos were distributed in a completely randomized design in a 2 × 2 factorial arrangement (inclusion or lack of lime × inclusion or lack of urea), with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Forage conservation; Organic acids; Silage.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000600489

Common bean residue as additive in sugarcane silage
Provedor de dados: 124
Autores: Santos,Kelly Cristina dos; Magalhães,André Luiz Rodrigues; Conceição,Maria Gabriela da; Carvalho,Francisco Fernando Ramos de; Ferreira,Geane Dias Gonçalves.
ABSTRACT The sugarcane has a high content of soluble carbohydrates, thereby resulting in many losses during its fermentation. Thus, it is necessary to use an additive that reduces the losses in the nutritional value of the forage during the ensiling process. The objective was to evaluate the use of common bean residue during the sugarcane ensiling process over the silage nutritional quality and fermentation characteristics. Were used 20 silos made of PVC pipes, in which the residue of crude and previously ground common bean processing (Phaseolus vulgaris L.) were added to newly chopped sugarcane in the proportions of 0; 50; 100 and 150 g kg-1 of fresh weight. A randomized design was used and the regression analysis was performed according to the level of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aerobic stability; Chemical composition; Fermentation; PH.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000100159

ANTIBIOTIC PRODUCTION BY STREPTOMYCES HYGROSCOPICUS D1.5: CULTURAL EFFECT
Provedor de dados: 59
Autores: Bhattacharyya,Barun K.; Pal,Sushil C.; Sen,Sukanta K.
In an attempt to screen out new potent antibiotic producers from soil, Streptomyces hygroscopicus D1.5 was isolated and was found antagonistic to both bacteria and fungi. It could utilise arginine as nitrogen source and glycerol as carbon source at 0.75 g/l and 11.5 g/l level, respectively for maximum antibiotic yield.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibiotics; Fermentation; Streptomyces.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141998000300003

Detection and characterization of bacteriocin-producing Lactococcus lactis strains
Provedor de dados: 59
Autores: Moreno,Izildinha; Lerayer,Alda L.S.; Leitão,Mauro F. de Freitas.
One hundred sixty seven strains of Lactococcus lactis were screened for bacteriocin production by well diffusion assay of GM17 agar. Fourteen (8.4%) produced antimicrobial activity other than organic acids, bacteriophages or hydrogen peroxide. The frequency of bacteriocin production ranged from 2% in L. lactis subsp. cremoris up to 12% in L. lactis subsp. lactis. Antimicrobial activities were not observed in any strain of L. lactis subsp. lactis var. diacetylactis. Among thirteen bacteriocin-producing strains and two nisin-producing strains (L. lactis subsp. lactis ATCC 11454 and L. lactis subsp. lactis CNRZ 150), eight (53%) were characterized as lactose-positive (Lac+) and proteinase-negative (Prt-). The bacteriocin-producing cultures were also...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: L. lactis; Bacteriocins; Fermentation; Plasmids.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000200008

The growth of Micrococcus varians by utilizing sugar cane blackstrap molasses as substrate
Provedor de dados: 59
Autores: Miranda,Luís A. S.; Sant'Anna,Ernani S.; Porto,Anna C. S.
Comparative studies on the growth of Micrococcus varians were carried out in BHI culture medium (control) as well as in a culture medium with 2% diluted sugar cane blackstrap molasses, enriched with 0.1% yeast extract. The experiment was conducted with three samples of the experimental and control media in a 5 liter fermentor with working volume of 3.5 liters, continuous agitation (150 rpm), 35 ± 0.1°C temperature, 0.7 L air. l-1 medium. min -1, initial pH 7.0 ± 0.2, 24 hour fermentation period, and approximate inoculum of 6.0 log10 CFU/ml. Samples were collected at 2-hour intervals. Micrococcus varians grew in the two culture media studied, which confirms the experimental medium viability for the growth of this species. The final average concentration of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Micrococcus varians; Fermentation; Molasses.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37141999000200007

Methane production of two roughage and total mixed ration as influenced by cellulase and xylanase enzyme addition
Provedor de dados: 63
Autores: Gemeda,Belete Shenkute; Hassen,Abubeker.
In recent decades supplementation of animal feeds with exogenous fibrolytic enzymes has substantially improved digestibility and animal performance. However, information related to associated methane production is limited and inconsistent. This study evaluated the effect of cellulase and xylanase enzymes on in vitro methane production of Eragrostis curvula hay, maize (Zea mays) stover and a total mixed ration (TMR) at seven levels of the two enzymes. Feed samples were incubated for 2, 12, 24 and 48 h in an in vitro batch culture with buffer and rumen fluid, and fibrolytic enzymes. Gas production was measured using a pressure transducer connected to a data tracker, while methane gas was analysed using a gas chromatograph which was calibrated with standard...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestibility; Fermentation; Fibrolyitc enzymes; Gas production.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000100011

Enriching nutritive value of cassava root by yeast fermentation
Provedor de dados: 63
Autores: Boonnop,Krisada; Wanapat,Metha; Nontaso,Ngarmnit; Wanapat,Sadudee.
Cassava (Manihot esculenta) is extensively cultivated throughout the tropics and subtropics regions due to its ability to grow in diverse soil conditions and minimal management. Experiments were made to study the cassava root fermentation by yeasts in order to enhance the nutritive value of their products (fresh pulp and chips). Both cassava chip (CC) and fresh cassava root pulp (FCR) samples were fermented by Saccharomyces cerevisiae in solid-liquid media fermentation conditions during 132 hours and dried at 30ºC. Products were analyzed for proximate composition, mineral composition, essential aminoacids and antinutrient content. There were increases (p &lt; 0.01) in protein (30.4% in CC and 13.5% in fermented cassava root -FCR) and fat contents (5.8% in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharomyces cerevisiae; Fermentation; Cassava chip; Fresh cassava root pulp; Protein; Animal feed.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000500007

Fermentative and microbiological profile of marandu-grass ensiled with citrus pulp pellets
Provedor de dados: 63
Autores: Bernardes,Thiago Fernandes; Reis,Ricardo Andrade; Moreira,Andréia Luciane.
High-wet roughages with low content of soluble carbohydrates, such as tropical grasses, should be inappropriate for producing silages of adequate quality. This study aimed to evaluate the fermentative and microbiological profiles of Marandu-grass ensilaged with pelleted citric pulp (PCP). Brachiaria brizantha (Hochst ex. A. Rich) Stapf cv. Marandu with 58 days of vegetative growth was harvested for producing experimental silages in PVC silos provided with Bünsen valves and density capacity of 900 kg m-3. Treatments were three PCP levels (0, 50 and 100 g kg-1 of fresh forage) and seven times (1, 4, 7, 14, 21, 28 and 56 days) after sealing. PCP inclusion increased soluble carbohydrate concentrations by 15 to 20% and reduced pH (5.3 to 4.2) and N-NH3 levels...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additive; Bacteria; Fermentation; Tropical grass; Silage.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000300003

การหมักแอลกอฮอล์จากข้าวเหนียวโดยใช้โคจิ
Provedor de dados: 106
Autores: Pradit Karuwanna; Malai Boonyaratanakornkit; Chakamas Wongkhalaung.
Steamed glutinous rice was used as the raw material_ for aleohol fermentation. Rice koji from the mixed cultures of Aspergillris o?yzae KM 24 and Rhi_zopus o"yzae Kl4 25 were used insbead of Luk_pang. Yeast starter of Saccharomyces cerevisiae Ky UT was cuLtivated in sterile koii extracr for 24 h. Fermentafion was made at 22-z3oc. The mixture of rice koji, steamed rice, water and lactic acid were added into the fermentation vats for 1 , 2 and, J tirnes (with the same total amount at the final). The rat,e of fermentaf,ion, viable cell_ count, total acidity (as l-actic acid) and yiel_d of alcohol were analysed and compared. ft was found that 15.11, 15.41 and 15.87% of aLcohol_by volume were yierc in r0, 12 and 13 days for one time, two times and three times...
Tipo: PhysicalObject
Palavras-chave: Alcohol; Fermentation; Glutinous Rice; Koji; Aspergillus oryzae; ข้าวเหนียว; การหมักแอลกอฮอล์; แอลกอฮอล์; โคจิ; เชื้อรา.
Ano: 1984
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5128

Nutritional strategies in mitigating rumen methane in livestock production
Provedor de dados: 106
Autores: Metha Wanapat.
Tipo: PhysicalObject
Palavras-chave: Livestock production; Nutritional manipulation; Rumen; Fermentation; Methan; Plant secondary compounds; Global warming; Greenhouse gas; การผลิตปศุสัตว์; การจัดการทางโภชนาการ; กระเพาะรูเมน; การหมัก; การลดก๊าซมีเทน; ภาวะโลกร้อน.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5833

การใช้แบคทีเรียกรดแลคติคในนํ้าพืชหมักเป็นสารเสริมชนิดใหม่ในพืชหมักเขตร้อน
Provedor de dados: 106
Autores: Smerjai Bureenok.
Tipo: Collection
Palavras-chave: Silage; Fermentation; Epiphytic lactic acid bacteria; Tropical crop silages; พืชอาหารสัตว์; พืชหมัก; กระบวนการหมัก; แบคทีเรียกรดแลคติค; สายพันธุ์เพื่อการค้า; น้ำพืชหมัก; คุณภาพ; คุณค่าทางโภชนะ.
Ano: 2011
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5287

Preliminary study of ethanol production from sorghum
Provedor de dados: 106
Autores: Siwawej, S.; Suraphanpisit, Y.
Palavras-chave: Sorghum; Ethanol; Production; Fermentation; Saccharomyces cerevisiae; Mold; Enzyme activity; ข้าวฟ่าง; เอทานอล; แป้งข้าวฟ่าง; ยีสต์; พันธุ์วาย-90; การผลิต.
Ano: 1981
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4081

Nutritional evaluation of silage with coffee (Coffea Arabica L.) cherry for ruminant supplementation
Provedor de dados: 109
Autores: Aguirre-Fernández,Paola Andrea; Acosta-Pinto,Liria María; Cardozo-Corzo,Luz Dary; Rodríguez-Arenas,Sergio Andrés; Corredor-Sánchez,Guillermo Arturo.
Abstract The aim of this study was to evaluate nutritionally coffee cherry (Coffea Arabica L.) silages with different additives: efficient microorganisms (EM) and kumis, to be used in ruminant supplementation. Micro silos were prepared according to treatments: a control treatment with coffee cherry and two experimental treatments with additives (cherry + EM and cherry + commercial kumis). Five fermentation times (1, 8, 16, 21 and 31 days) were evaluated for pH and temperature, and three fermentation times (1, 16 and 31 days) were evaluated for dry matter, protein and neutral detergent fiber; organoleptic indicator evaluation (smell, color and texture) was performed at day 31. A completely randomized design with factorial arrangement was used and linear...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additives; Feeds; Fermentation; Organoleptic properties; Microorganisms; Kumis.
Ano: 2018
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000200326

Alcohol production from sweet potato (Ipomoea batatas (L.) Lam.) genotypes in fermentative medium
Provedor de dados: 109
Autores: Cantos-Lopes,Amanda; Vilela-de Resende,Juliano Tadeu; Machado,José; Perez-Guerra,Edson; Vilela-Resende,Nathalia.
Abstract Ethanol is one of the most promising fuels in Brazil, but its production is centralized in sugarcane cultivation, and is currently in search for other sources alcohol producing biomass to replace sugarcane monoculture. The aim of this study was to study fermentation process variables such as fermentation time (72 and 96 hours), addition of nutrients (with and without addition) and yeasts (dry and fresh organic yeast), employed in ethanol production from two sweet potato (Ipomoea batatas (L.) Lam.) genotypes: UGA 05 and UGA 77. Alcohol evaluation content in °GL was performed in a completely randomized design according to two factorial schemes (22 and 23), and results obtained were analyzed using Design Expert® software version 8. Results of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofuel; Ethanol production; Fermentation; Saccharification; Starch; Water content.
Ano: 2018
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000200231

Effect of fermentation time on phenolic content and antioxidant potential in Cupuassu (Theobroma grandiflorum (Willd. ex Spreng.) K.Schum.) beans
Provedor de dados: 109
Autores: Cuellar-Álvarez,Laura; Cuellar-Álvarez,Natalia; Galeano-García,Paula; Suárez-Salazar,Juan Carlos.
Abstract Cupuassu (Theobroma grandiflorum (Willd. ex Spreng.) K.Schum.) is an evergreen tree in the family Malvaceae, with nutritional qualities of interest in the food and cosmetic industry. It is necessary for its processing, in addition to other processes, to perform a fermentation, affecting its chemical composition. Therefore, the effect of fermentation time on the phenolic content and antioxidant activity of Cupuassu (T. grandiflorum) beans, was determined. During this process, the chemical properties of the beans and the phenolic content were evaluated every two days; also quantifying the secondary metabolites Catechin, Epicatechin, Theobromine and Caffeine by high performance liquid chromatography (HPLC). The antioxidant activity was analyzed using...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bromatological analysis; Phenols; Fermentation; Free radicals; Análisis bromatológico; Fenoles; Fermentación; Radicales libres.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000400473

Milk and açaí berry pulp improve sensorial acceptability of kefir-fermented milk beverage
Provedor de dados: 36
Autores: NOGUEIRA,Lara Kozlowski; AGUIAR-OLIVEIRA,Elizama; KAMIMURA,Eliana Setsuko; MALDONADO,Rafael Resende.
ABSTRACT Kefir grains are a symbiotic biomass (yeast and bacteria) commonly used to produce milk probiotic fermented beverages. The aim of this study was to produce a mixed beverage of whole milk and açaí (Euterpe oleracea) berry pulp fermented by two different kefir cultures: one specific for milk and one specific for sugared water, adapted to milk. Based on the fermentation yield, pH and sensory analysis, the culture adapted to milk obtained the best results in a composition (g 100 g-1) of 70 of whole milk and 30 of açaí berry pulp, at room temperature (~25°C), without agitation and fermented for 24 h. The results obtained by this formulation were an increase of 12% in the kefir biomass, 93% of fermentation yield, pH 5.10 and overall sensory acceptance...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Euterpe oleracea; Kefir; Milk; Fermentation; Sensorial acceptance.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000400417

Efeitos da aeração sobre as características da silagem de cana-de-açúcar - DOI: 10.4025/actasciagron.v31i2.7035
Provedor de dados: 1
Autores: Silva, Estela Jorge Alves da; USP; Borgatti, Laura Maria Oliveira; USP; Meyer, Paula Marques; IBGE; Rodrigues, Paulo Henrique Mazza; USP.
No presente estudo, objetivou-se avaliar os efeitos do tempo de aeração sobre as características nutricionais e fermentativas da silagem de cana-de-açúcar. Utilizou-se o delineamento inteiramente casualizado com três tratamentos e quatro repetições. A cana-de-açúcar recém-picada foi exposta à aeração por 0, 4 ou 8 horas, sendo ensilada somente após cada tempo de espera. Após a exposição, o material foi ensilado em 12 silos experimentais confeccionados de baldes plásticos. A abertura dos silos ocorreu 85 dias após a ensilagem. Foram determinados os teores dos ácidos orgânicos e a composição químico-bromatológica das silagens. Foi observado desvio da linearidade (p &lt; 0,05) do tempo de aeração sobre os teores de matéria seca e efeito linear crescente (p...
Palavras-chave: 5.01.00.00-9 Agronomia ensilagem; Fermentação; Forrageira; Oxigenação; Valor nutritivo ensiling; Fermentation; Forage; Nutritive value; Oxygenation.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/7035

Silage quality of sorghum and Urochloa brizantha cultivars monocropped or intercropped in different planting systems
Provedor de dados: 2
Autores: Ribeiro, Matheus Gonçalves; Costa, Kátia Aparecida de Pinho; Souza, Wender Ferreira de; Cruvinel, Welma Santos; Silva, Jessika Torres da; Santos Júnior, Divino Rosa dos.
 Recently it has emerged a technique for silage production of intercropping systems of annual crop with forage through crop-livestock integration, aiming to reduce the deficit forage in the offseason. The study was conducted to evaluate the fermentation characteristics and nutritional value of silage of sorghum and Urochloa brizantha cultivars monocropped or intercropped in different planting systems. The experiment was a randomized block design, with three replications, in a 3x2+4 factorial arrangement, with three cultivars of Urochloa brizantha (Marandu; Xaraes and Piata) intercropped with grain sorghum in two planting systems (row and between rows) and four monocrops (Sorghum, Marandu palisadegrass, Xaraes palisadegrass and Piata palisadegrass). The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.04.00-8 conservation; Digestibility; Fermentation; Crop-livestock integration.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33455

Elephant grass silage with the addition of crambe bran conjugated to different specific mass
Provedor de dados: 2
Autores: Cardoso, Arilson Moraes; Araújo, Saulo Alberto do Carmo; Rocha, Norberto Silva; Domingues, Felipe Nogueira; Azevedo, Jorge Cardoso de; Pantoja, Lilian de Araújo.
This study aimed to evaluate the effects of inclusion of crambe bran concentrations (Crambe abyssinica Hochst.) with different specific masses in elephant grass silage (Penninsetum purpureum Schum.). For that, the bromatological and microbiological compositions of the experimental silages were determined. We used 48 mini silos distributed in a completely randomized design, arranged in a factorial 4 × 3, four levels of inclusion of crambe bran (0; 10; 20 and 30%) and three specific masses (400; 500 and 600 kg MN m-3), with four replications. After 240 days of fermentation the silos were opened. It was observed linear effect on DM, CP, NDFap, ADFap, HEM, LIG, NFC, TC and population of bacteria that produce lactic acid with the addition of crambe meal. There...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pastagem e Forragicultura additive; Coproduct; Penninsetum purpureum; Bromatological composition; Fermentation.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/31828

Silage quality of Urochloa brizantha cultivars with levels of campo grande Stylosanthes
Provedor de dados: 2
Autores: Epifanio, Patrícia Soares; Costa, Kátia Aparecida de Pinho; Guarnieri, Analu; Teixeira, Daniel Augusto Alves; Oliveira, Suelen Soares; Silva, Valdevino Rodrigues da.
The seasonality of forage production represents a limiting factor in the production of ruminants. The use of silages has been a solution for periods of low forage production, providing high quality food. This study was conducted to evaluate the fermentative characteristics and the chemical composition of silage of Urochloa brizantha cultivars with different levels of Campo Grande Stylosanthes. It was used a complete randomized block design with three replications in a 2 x 4 factorial design, being two cultivars of Urochloa brizantha (BRS Piata palisadegrass and BRS Paiaguas palisadegrass) and four levels of Campo Grande Stylosanthes (0, 10, 20 and 30%). Silages of Urochloa brizantha with Campo Grande Stylosanthes exhibit satisfactory quality, on the basis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.04.01-6 chemical composition; Fermentation; Inoculant.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/29631

Aerobic stability in corn silage (Zea maysL.) ensiled with different microbial additives
Provedor de dados: 2
Autores: Bumbieris Junior, Valter Harry; Guimarães, Vinícius André de Pietro; Fortaleza, Ana Paula de Souza; Massaro Junior, Fernando Luiz; Moraes, Gabriella Jorgette de; Meza, Diego Armando Rojas.
  This study aimed to assess different microbial additives, regarding the efficiency of aerobic stability in corn silages. The corn hybrid used for silages production was the DKB 310. The treatments consisted of: 1) control treatment without any microbial additive; 2) Treatment with LPPA composed of: Lactobacillus plantarum CCT 0580 3.1 x 1010 CFU g-1 and Propionibacterium acidipropionici CCT 4843 3.1 x 1010 CFU g-1; 3) Treatment with Inoculum, composed of Bacillus subtilis CCT 0089 3.0 x 109 CFU g-1, Lactobacillus plantarum CCT 0580 1.2 x 1010 CFU g-1 and Propionibacterium acidipropionici CCT 4843 1.5 x 1010 CFU g-1 and 4) Treatment LB, composed only of Lactobacillus buchneri CCT 3746 2.6 x 1010 CFU g-1. The experimental design was completely randomized...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.04.01-6 A aerobiosis; Silage; Fermentation; Nutritional quality.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/34426

Quality of sorghum silage with leucaena
Provedor de dados: 2
Autores: Andrade, Weudes Rodrigues; Moura, Marielly Maria Almeida; Rocha Júnior, Vicente Ribeiro; Costa, Renê Ferreira; Santos, Luiz Henrique Tolentino; Silva, Marcelo Marcos da.
 This study evaluated the effect of increasing levels of leucaena forage in sorghum: forage. In addition to pure sorghum, it was evaluated different levels of inclusion of leucaena (15, 30 and 50%) at the time of ensiling. Forage was ensiled in PVC tubes (100 mm diameter, 500 mm length) under the density of 500 – 600 kg m-3, a total of 20 silos were prepared, which were opened 35 days after ensiling. There was no effect (p &gt; 0.05) of leucaena inclusion levels for pH, water activity (Aw) and total ammonia nitrogen (total NH3-N). There was an increasing linear effect (p &lt; 0.05) for the content of dry matter (DM), crude protein (CP) and lignin that increased from 33.47 to 34.75%, 7.82 to 16.05% and from 7.29 to 9.93%, at the levels from 0 to 50%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.00.00-2   5.04.04.01-6 chemical composition; Fermentation; Food preservation; Legume.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/36493

Fermentative characteristics and nutritional value of elephant grass silage added with dehydrated banana peel
Provedor de dados: 2
Autores: Brant, Lara Maria Santos; Pimentel, Paulo Roberto Silveira; Rigueira, João Paulo Sampaio; Alves, Dorismar David; Carvalho, Mateus Alves Macedo; Alves, Wagner Sousa.
The aim of this study was to evaluate the fermentative losses and nutritional value of elephant grass silages with the increasing of inclusion levels of dehydrated banana peel. The experiment was conducted in a completely randomized design, with six treatments and four replications, being the silage exclusively from elephant grass, and five levels of inclusion of banana peel to the elephant grass silage, as the following - 5; 10; 15; 20 and 25%, being added based on natural matter. The addition of the banana peel in the silage reduced linearly (p &lt; 0.05) the pH, the ammoniacal nitrogen and the losses of the fermentative process. In addition, the inclusion of banana peel increased linearly (p &lt; 0.05) the dry matter and non-fibrous carbohydrates. On...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.04.00-8; 5.04.04.01-6 co-product; Fermentation; Musa; Pennisetum purpureum.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33925

Degradabilidade in situ da matéria seca e da fração fibra da cana-de-açúcar fresca ou ensilada e da silagem de milho em diferentes ambientes ruminais - DOI: 10.4025/actascianimsci.v30i2.4711
Provedor de dados: 2
Autores: Santos, Vanessa Pillon dos; USP; Bittar, Carla Maris Machado; ESALQ - USP; Nussio, Luiz Gustavo; USP; Ferreira, Lucas Silveira; USP; Mourão, Gerson Barreto; USP; Zopollatto, Maity; USP.
O presente trabalho teve como objetivo determinar degradabilidades in situ da matéria seca (MS), fibra em detergente neutro (FDN) e ácido (FDA) da cana-de-açúcar in natura (CF) ou ensilada (SC) e da silagem de milho (SM) em diferentes ambientes ruminais, utilizando a técnica in situ macro-bag. Foram utilizadas duas vacas canuladas, alimentadas com rações formuladas de maneira a serem obtidos diferentes ambientes ruminais, de acordo com os volumosos: CF ou SC. A degradabilidade in situ dos volumosos foi avaliada utilizando-se sacos com poros de 50 µm, medindo 20 x 40 cm, sendo os volumosos incubados in natura nos horários 0, 12, 24, 48, 72, 96h. Os ambientes ruminais consistiram de um arranjo hierárquico 3 x 2 (3 forragens x 2 ambientes ruminais). Amostras...
Palavras-chave: 5.04.03.00-1    Nutrição e Alimentação Animal ambiente ruminal; Degradabilidade efetiva; Degradabilidade potencial; Fermentação; Inóculo; Macro-bag. ruminal condition; Effective degradability; Potential degradability; Fermentation; Inoculum; Macro-bag.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/4711

In vitro degradability and total gas production of biodiesel chain byproducts used as a replacement for cane sugar feed
Provedor de dados: 2
Autores: Moreira, Milenna Nunes; Silva, Aderbal Marcos de Azêvedo; Carneiro, Heloisa; Bezerra, Leilson Rocha; Morais, Raissa Kiara Oliveira de; Medeiros, Fabiola Franklin de.
This study aimed to determine the in vitro degradability of dry matter and the total gas production of oil seed press cake from biodiesel production (Gossypium hirsutum L., Helianthus annuus L., Ricinus communis, Moringa oleífera L. and Pinhão manso curcas L.) at four different levels of replacement (0, 30, 50, and 70%) for cane sugar (Saccharum officinarum RB.) in ruminant feed. Inocula were prepared using the ruminal fluid of three Holstein cows, and data were collected after 48 hours of incubation. The byproducts of Moringa had the highest degradability, and castor presented the lowest values at all evaluated levels of replacement. Castor bean byproduct showed the highest total gas production, cotton showed the lowest production, and the byproduct of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Ruminant; Alternative foods; Methane.
Ano: 2014
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/23950

Assessing the nutritional value of agroindustrial co-products and feed through chemical composition, in vitro digestibility, and gas production technique
Provedor de dados: 2
Autores: Olivo, Paula Martins; Santos, Geraldo Tadeu dos; Ítavo, Luís Carlos Vinhas; Silva Junior, Ranulfo Combuca da; Leal, Eduardo Souza; Prado, Rodolpho Martin do.
Agroindustrial co-products are a viable alternative for use in animal nutrition. Tests were conducted using eight different types of co-products and feed to evaluate the chemical composition, in vitro digestibility of dry matter, crude protein and neutral detergent fiber, and gas production by them. The co-products tested were: coffee hulls; pelleted citrus pulp; grape residue; soybean hulls; cottonseed; cassava foliage; and foods usually supplied to ruminants: corn silage and ground corn concentrate. Data of in vitro digestibility of dry matter, crude protein and neutral detergent fiber were tested by analysis of variance using the least square method; the results of gas production were interpreted by a non-linear regression by the Gauss-Newton method;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zootecnia; Nutrição de Ruminantes alternative feed; Degradation; Fermentation; Gas production.s.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/34024

Phenolic acids and ruminal parameters of different varieties of sugarcane in natura or ensiled
Provedor de dados: 2
Autores: Spínola, Jaime Emerson Laranjeira; Tavares dos Reis, Sidnei; Junqueira de Sales, Eleuza Clarete; Monção, Flávio Pinto; Rigueira, João Paulo Sampaio; Delvaux Júnior, Nelson de Abreu.
This study aimed to determine and measure the phenolic acids in four varieties of sugarcane (RB 855536, RB 765418, SP 80-1842 and SP 80-1816) as fresh and ensiled, and assess the influence of these acids on in situ degradability of dry matter and neutral detergent fiber. The experimental design was completely randomized in a factorial design. For the fraction of dry matter (DM), varieties RB 855536 and SP 80-1842 had average 17.80% higher compared to others. The SP80-1842 and RB 855536 varieties did not differ (p &gt; 0.05), with an average of DM effective degradability of 33.70%. For silage, the highest levels of p-coumaric acid were found in the variety RB 855536, which was 24.64% higher than the varieties RB 765418 and SP 80-1842 (average 12.75%) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.03.00-1 digestibility; Fermentation; Lignin; Silage; Nutritional value.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/31470

Evaluation of supplementation of sucrose medium on the synthesis of Zymomonas mobilis bio-products - doi: 10.4025/actascibiolsci.v32i3.1519
Provedor de dados: 3
Autores: Borsari, Raquel Renan Jorge; Universidade Estadual de Londrina; Buzato, João Batista; UEL; Silva, Rui Sérgio dos Santos Ferreira da; UEL; Celligoi, Maria Antonia Pedrini Colabone; UEL.
The effect of the variables pantothenic acid, yeast extract and sodium chloride, as well as the cell permeabilization technique, were investigated on the formation of levan, ethanol, sorbitol and biomass of Zymomonas mobilis, using a 24-1 fraction factorial design. Cell growth was determined by turbidimetry at 605 nm, relating it to a biomass with a dry weight calibration curve. Reducing sugars were quantified according to Somogyi and Nelson. Total sugars were quantified by the phenol-sulfuric acid method, sorbitol by HPLC and ethanol. The levan produced was precipitated by the addition of absolute ethanol and quantified in fructose units. In levan biosynthesis, the variable that had the largest contribution was cell condition. The results suggested that...
Palavras-chave: 2.08.02.00-5; 2.12.02.02-8 Zymomonas mobilis; Fermentation; Biomass; Substrate; Sorbitol; Levan Bioquímica dos microrganismos; Microbiologia industrial e de fermentação Zymomonas mobilis; Fermentation; Biomass; Substrate; Sorbitol; Levan.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1519

Optimized acid hydrolysis of the polysaccharides from the seaweed Solieria filiformis (Kützing) P.W. Gabrielson for bioethanol production
Provedor de dados: 3
Autores: Castro, George Meredite Cunha de; Benevides, Norma Maria Barros; Cabral, Maulori Curié; Miranda, Rafael de Souza; Gomes Filho, Enéas; Rocha, Maria Valderez Ponte; Araújo, Marjory Lima Holanda.
 The seaweeds are bio-resource rich in sulfated and neutral polysaccharides. The tropical seaweed species used in this study (Solieria filiformis), after dried, shows 65.8% (w/w) carbohydrate, 9.6% (w/w) protein, 1.7% (w/w) lipid, 7.0% (w/w) moisture and 15.9% (w/w) ash. The dried seaweed was easily hydrolyzed under mild conditions (0.5 M sulfuric acid, 20 min.), generating fermentable monosaccharides with a maximum hydrolysis efficiency of 63.21%. Galactose and glucose present in the hydrolyzed were simultaneously fermented by Saccharomyces cerevisiae when the yeast was acclimated to galactose and cultivated in broth containing only galactose. The kinetic parameters of the fermentation of the seaweed hydrolyzed were Y(P⁄S) = 0.48 ± 0.02 g.g−1, PP = 0.27 ±...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências da Vida  Bioquímica iota-carrageenan; Cellulose; Galactose; Kinetic parameters; Fermentation; Acclimation; Sulfuric acid. Biotecnologia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/37227

Evaluation and measurement of bioethanol extraction from melon waste (Qassari cultivar)
Provedor de dados: 111
Autores: Salehi, Rouhollah; Taghizadeh-Alisaraei, Ahmad; Jahanbakhshi, Ahmad; Shahidi, Fakhri.
As the world progresses, more energy is required to get along with everyday changes. Using bio-ethanol as one of the most important bio-fuels is an appropriate response to those changes. Much agricultural waste is being produced in Iran and the combination of such waste can turn it into a good source for the production of bio-ethanol. Thus, in this study, the amount of bioethanol extracted from melon waste was measured and evaluated. To do so, considering the 15 kg capacity of the device's fermenter, 12 kg of refined melon sugar syrup and three kilograms of water (with the standard ratio of 4 to 1), i.e. a total of 15 kg of substrate with the brix degree of 20, as well as 75 gr of saccharomyces cervisiae yeast, cultured in standard conditions (5 grams of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioethanol; Melon waste; Fermenter; Saccharomyces cervisiae; Fermentation.
Ano: 2018
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4821

Fermentation characteristics in stirred-tank reactor of exopolysaccharides with hypolipidemic activity produced by Pleurotus geesteranus5#
Provedor de dados: 42
Autores: DUOBIN,MAO; YUPING,MA; LUJING,GENG; AIJING,ZHAO; JIANQIANG,ZHENG; CHUNPING,XU.
In this study, the hypolipidemic effect of exopolysaccharides (EPS) fromPleurotus geesteranus 5# fermenting liquor by the optimal culture conditions in a 5-L stirred-tank reactor was investigated. The hypolipidemic effect of the polysaccharide, investigated in streptozotocin induced diabetic mice, decreased plasma glucose, total cholesterol and triacylglycerol concentrations by 17.1 %, 18.8 % and 12.0 %, respectively. The results of the present investigation strongly demonstrate the potential of this polysaccharide to prevent hyperglycemia in the experimental animals. Under optimal culture conditions, the maximum concentrations of mycelial and EPS were 22.63 g/L after 7 d cultivation and 11.09 g/L after 10 d, respectively. Furthermore, the morphological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Exopolysaccharides; Pleurotus geesteranus; Fermentation; Hypolipidemic effect; Morphology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401473

Silage of rehydrated corn grain
Provedor de dados: 45
Autores: Mombach,M.A.; Pereira,D.H.; Pina,D.S.; Bolson,D.C; Pedreira,B.C.
ABSTRACT The objective with this study was to evaluate the effect of different levels of water inclusion on the chemical composition and fermentation profiles of reconstituted corn grain silage. The experiment was carried out in a factorial arrangement in a completely randomized design, with three replicates per treatment. Five treatments were evaluated with different levels of water inclusion (% of the natural matter): dry corn grain (control); 90% dry corn grain (DCG) and 10% water; 80% DCG and 20% water; 70% DGC and 30% water; and 60% DCG and 40% water, totaling 45 experimental silos. Inclusion of water in the silage of reconstituted corn grain promoted a reduction in the CP (%) and NDF (%) contents. However, the water increase elevated the NPN/TN...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water; Concentrate; Ensiling; Fermentation; Moisture.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000300959

Fermentation profile and microbial population in soybean silages with inoculant and powdered molasses
Provedor de dados: 45
Autores: Rosa,L.O.; Pereira,O.G.; Ribeiro,K.G.; Valadares Filho,S.C.; Cecon,P.R.
ABSTRACT Fermentation profile and microbial population were assessed in soybean silages without any additive (control), with inoculant (I), with I + powdered molasses (I+M), and with powdered molasses only (M). Soybean plants were harvested at the R6 stage and ensiled in 2kg-capacity laboratory silos. The additives were added to the natural matter base of silages. The assessed fermentation periods were 1, 3, 7, 14, 28, and 56 days. A 4 × 6 factorial arrangement (4 additives × 6 fermentation periods) in a completely randomized design with 3 replicates was used. Lactic, acetic, and butyric acids concentrations were influenced by additives and periods (P&lt; 0.05). It was observed higher lactic acid values to control silages, on the 56th day. Lower average...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acid lactic bacteria; Additives; Fermentation; PH.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000501586

Blackberry Vinegar Produced By Successive Acetification Cycles: Production, Characterization And Bioactivity Parameters
Provedor de dados: 52
Autores: Cunha,Mário Antônio Alves da; Lima,Kely Priscila de; Santos,Vidiany Aparecida Queiroz; Heinz,Otto Lucas; Schmidt,Carla Adriana Pizarro.
ABSTRACT: Blackberry vinegar was produced in successive acetification cycles and content of total phenolics, anthocyanins and antioxidant activity were evaluated along the production. Firstly, blackberry wine was obtained in bench-scale bioreactor, being verified 0.39 g/g ethanol yield, 1.78 g/L.h volumetric productivity and 76% efficiency. After, three successive acetification cycles were conducted efficiently in grapia barrel with average acetic acid production of 51.6 g/L, 72.2 % acetic acid yield and 0.4 g/L.h volumetric productivity. Appreciable contents of polyphenolic compounds, anthocyanins and high antioxidant activity were observed in the raw material, wine and vinegar obtained in each cycle of acetic acid transformation. Acetic acid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Berries; Acetic Acid Bacteria; Bioactives; Wine; Fermentation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100508

Fermentation capacity of Saccharomyces cerevisiae cultures
Provedor de dados: 52
Autores: Alencar,Elvira Maria Bezerra de; Souza-Motta,Cristina Maria de; Walter,Bruno Souza; Santos,Rejane Maria Pessoa; Marques,Olga Martins; Queiroz,Lusinete Aciole de.
This work aimed at the assessment of fermentative capacity of original diploid, monocellular haploid and recuperated diploid cultures of S. cerevisiae in sterilized sugar-cane wort. Twenty eight cultures were analyzed, four being original diploids (URM-4420, Itaiquara Ferment FIT, Lallemand Ferment FLA and Wild Ferment SEL); 12 monocellular haploids from original ones and 12 recuperated diploids from the monocells. The ethanol percentage ranged from 1.7 to 6.2% and the unfermentable reducing sugars from 0.45 to 0.50g/100mL. The highest ethanol percentages were produced by the monocellular cultures URM-MH3 (4.8%) in 12 h and SEL-MH1 (6.2%) in 24 h, corresponding to the productivity values of 3.15 and 2.03 g.L-1.h-1, respectively. The recuperated diploids...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharomyces cerevisiae; Monocellular; Fermentation.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000400004

Profile of the alcohols produced in fermentations with malt contaminated with trichothecenes
Provedor de dados: 52
Autores: Reinehr,Christian Oliveira; Furlong,Eliana Badiale.
In order to study the influence of mycotoxins on the production of alcohols, a fermentative process on a laboratorial scale was simulated. Malt was contaminated with deoxynivalenol and T-2 in different ratios (up to 500 ppb), according to a 3² factorial design, and the alcohols obtained after the fermentation were determined through gas chromatography. The results showed that trichothecenes influenced the profile of the alcohols produced by Saccharomyces cerevisiae during the fermentative process of malt, especially the profile of methyl and isoamyl alcohols.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Deoxynivalenol; Fermentation; Malt; T-2 toxin; Trichothecenes.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000400013

Production of alcohol by simultaneous saccharification and fermentation of low-grade wheat flour
Provedor de dados: 52
Autores: Neves,Marcos Antonio das; Kimura,Toshinori; Shimizu,Naoto; Shiiba,Kiwamu.
Two samples of low-grade wheat flour, namely low-grade 1 (LG1) and low-grade 2 (LG2), with different carbohydrate and fibrous content, were used as substrates. The samples were liquefied using various concentrations of alpha- or beta-amylase, in order to optimize the production of fermentable sugars; the enzyme alpha-amylase revealed higher performance. After liquefaction, the simultaneous saccharification and fermentation was conducted in a jar fermentor. Amyloglucosidase was used for saccharification, and dry baker's yeast, S. cerevisiae, for fermentation simultaneously. Glucose was consumed promptly in both cases, LG1 and LG2; ethanol production was considerably higher in LG1 (38.6 g/L), compared to LG2 (24.9 g/L). The maximum ATP production was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Low grade; Wheat flour; Yeast; Fermentation; Ethanol.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000400017

Influence of static magnetic fields on S. cerevisae biomass growth
Provedor de dados: 52
Autores: Muniz,João B.; Marcelino,Milton; Motta,Mauricio da; Schuler,Alexandre; Motta,Mauricy Alves da.
Biomass growth of Saccharomyces cerevisiae DAUFPE-1012 was studied in eight batch fermentations exposed to steady magnetic fields (SMF) running at 23ºC (± 1ºC), for 24 h in a double cylindrical tube reactor with synchronic agitation. For every batch, one tube was exposed to 220mT flow intensity SMF, produced by NdFeB rod magnets attached diametrically opposed (N to S) magnets on one tube. In the other tube, without magnets, the fermentation occurred in the same conditions. The biomass growth in culture (yeast extract + glucose 2%) was monitored by spectrometry to obtain the absorbance and later, the corresponding cell dry weight. The culture glucose concentration was monitored every two hours so as the pH, which was maintained between 4 and 5. As a result,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: S. cerevisiae; Biomass; Magnetic fields; Fermentation.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300017

Inhibition of bacteria contaminating alcoholic fermentations by killer yeasts
Provedor de dados: 52
Autores: Meneghin,Maria Cristina; Reis,Vanda Renata; Ceccato-Antonini,Sandra Regina.
The aim of this work was to study the in vitro antibacterial activity possessed by killer yeast strains against bacteria contaminating alcoholic fermentation (Bacillus subtilis, Lactobacillus plantarum, Lactobacillus fermentum and Leuconostoc mesenteroides), in cell X cell and cell X crude toxin preparations. The bacteria were not inhibited by any S. cerevisiae killer strains (5 out of 11). The inhibition caused by two crude toxin preparations (Trichosporon figueirae and Candida sp) against L. plantarum was surprisingly high but not in the same extent for B. subtilis, especially with three killer strains (Candida glabrata, Pichia anomala and Candida sp). L. mesenteroides and L. fermentum strains were neither inhibited in cell X cell nor crude toxin X cell...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteria; Killer yeasts; Alcohol; Fermentation.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000500006

Extracellular methionine amino peptidase (MAP) production by Streptomyces gedanensis in solid-state fermentation
Provedor de dados: 52
Autores: Rahulan,Raji; Manjunath,G; Nampoothiri,Kesavan Madhavan; Pandey,Ashok.
A bioprocess was developed for extracellular MAP production from Streptomyces gedanensis by solid-state fermentation. Response surface methodology of Box Behken Design was performed to evaluate the interaction effects of most significant variables {inoculum size, (NH4)2SO4 concentration, MgSO4.7H2O and tryptone) on MAP production after the single parameter optimization and it resulted a maximum MAP production of 55.26 IU/g PUF after 120 h of fermentation. The concentrated crude MAP displayed a pH and temperature optimum of 8.5 and 50°C. By analyzing the thermal stability, the MAP was found to be stable in a temperature range of 50 to 55°C but lost about 50% of its activity at 65°C after 30 min. This is a first report of this kind of study for MAP.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Streptomyces gedanensis; Methionine amino peptidase; Fermentation; Box Behnken design.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000200005

Influence of the use of selected and non-selected yeasts in red wine production
Provedor de dados: 52
Autores: Dorneles,Daniela; Machado,Iara Maria Pereira; Chociai,Miriam Blumel; Bonfim,Tania Maria Bordin.
The aim of this work was to study the influence of use of Saccharomyces cerevisiae selected varieties in the elaboration of Terci red wine from Colombo. The winemaking method followed the classic red wine vinification system and the samples were analyzed according to the official table wine methods. The assays performed showed differences mainly over volatile acids, acetaldehyde, esters and methanol contents, confirming that the use of selected yeasts contributed on improving the wine quality.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Red wine; Selected yeasts.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000600010

Fed batch enzymatic saccharification of food waste improves the sugar concentration in the hydrolysates and eventually the ethanol fermentation by Saccharomyces cerevisiae H058
Provedor de dados: 52
Autores: Yan,Shoubao; Yao,Jianming; Yao,Liming; Zhi,Zhijun; Chen,Xiangsong; Wu,Jingyong.
The enzymatic hydrolysis of food waste by commercially available enzymes and the subsequent ethanol fermentation of the hydrolysates by Saccharomyces cerecisiae H058 were studied in this work. The optimum batch enzymatic conditions were found to be saccharification pH of 4.5, temperature of 55!, glucoamylase concentration of 120 u/g, α-amylase concentration of 10 u/g, solid-liquid ratio of 1: 0.75 (w/w). Fed batch hydrolysis process was started with a solid-liquid ratio of 1: 1 (w/w), with solid food waste added at time lapse of 2 h to get a final solid-liquid ratio of 1: 0.5 (w/w). After 4 h of reaction, the reducing sugar concentration reached 194.43 g/L with a enzymatic digestibility of 93.12%. Further fermentation of the batch and fed batch enzymatic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food waste; Enzymatic hydrolysis; Hydrolysates; Fermentation; Ethanol production.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000200002

Identification of yeasts Isolated from processed and frozen cocoa (Theobroma cacao) pulp for wine production
Provedor de dados: 52
Autores: Trindade,Rita de Cássia; Resende,Maria Aparecida de; Barreto,Eriana Gomes Serpa; Mendes,Taniella de Carvalho; Rosa,Carlos Augusto.
The alternative use of cocoa (Theobroma cacao) for wine production was tested. The pulp samples, obtained from Formosa farm, Itacaré, Brazil, were diluted, homogenized and inoculated on Sabouraud dextrose agar medium (SDA) and incubated at 28º C for 5-8 days. Selected colonies were tested for the ability to ferment cocoa pulp and divided into fermentative, non-fermentative and weak/late fermentative species. Isolates characterized as fermentative were further tested in a small-scale wine production plant and identified. Species from the genus Brettanomyces constituted the main fermentative yeasts, with the exception of two Kloeckera apis samples. The final wine product was normally pale or clear, making clarification unnecessary, and with a sweet or dry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yeast; Cocoa pulp; Fermentation; Wine production; Brettanomyces sp.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000300013

Extraction of Indigo from Some Isatis species and Dyeing Standardization Using Low-technology Methods
Provedor de dados: 52
Autores: Comlekcioglu,Nazan; Efe,Lale; Karaman,Sengul.
Fresh leaves of four Isatis species culture form of I. tinctoria L and wild forms of I. buschiana Schischkin, I. candolleana Boiss. (endemic) and I. tinctoria L. subsp. corymbosa. (Boiss.) were used for indigo production. Dyes were extracted by fermentation and hot water application. The extracted dyes were optimized with different pH and reducing agents. Results showed that the dye from hot water application produced the desired dying quality at pH 11. Reducing agent concentrations had no significant effect on color quality. Dark blue and blue colors were obtained from I. tinctoria and I. candolleana extracts although I. tinctoria subsp. corymbosa and I. buschiana produced mostly yellow-gray colors. Light, dry and wet rubbing fastness values varied...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Isatisspp.; Woad; Indigo; Natural dye; Fermentation; Fastness; Spectrophotometry.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000100096

Produção de Lactobacillus plantarum em melaço de cana-de-açúcar
Provedor de dados: 52
Autores: Feltrin,Valdemar P.; Sant'Anna,Ernani S.; Porto,Anna C. S.; Torres,Regina C. O.
Comparative studies of Lactobacillus plantarum were carried out in MRS broth (control) and in 3% (w/v) sugar cane blackstrap molasses enriched as follows: 0.5% yeast extract, 0.5% ammonium citrate and 0.5% sodium acetate (Medium 1) and 0.5% yeast extract, 0.5% ammonium citrate, 0.5% sodium acetate, 0.5% ammonium phosphate, 0.2% ammonium citrate, 0.1% Tween 80 and 0.005% manganese sulphate (Medium 2). The experiment, was carried out at a 5 L fermentor, with 3.5 L as working volume. At the end of the fermentation period MRS presented the highest viable cells production (28.68 log CFU/mL) while in Medium 2 it was 25.80 and in Medium 1 19.36 log CFU/mL. Biomass productivity was 0.0865 g.L-1.h for MRS (control), 0.0768 and 0.0507 g.L-1.h for Medium 2 and Medium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactobacillus plantarum; Fermentation; Molasses.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000100015

Optimization of the production of extracellular α-amylase by Kluyveromyces marxianus IF0 0288 by response surface methodology
Provedor de dados: 52
Autores: Stergiou,Panagiota-Yiolanda; Foukis,Athanasios; Theodorou,Leonidas; Papagianni,Maria; Papamichael,Emmanuel.
The aim of this work was to study the production of extracellular α-amylase by Kluyveromyces marxianus IF0 0288 using optimized nutritional and cultural conditions in a complex yeast medium under aerobic batch fermentation. By applying the conventional "one-variable-at-a-time" approach and the response surface methodology, the effect of four fermentation parameters (type of carbon source, initial culture pH, temperature, and incubation time) on the growth and α-amylase production was evaluated. The production of α-amylase during 60 h of fermentation increased 13-fold under optimized conditions (1% starch, pH 6.0, 30ºC) in comparison to the conventional optimization method. The initial pH value of 6.13 and temperature of 30.3ºC were optimal conditions by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Extracellular enzymes; Α-amylase; Kluyveromyces marxianus; Fermentation; RSM.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000300016

A cost effective fermentative production of glutathione by Saccharomyces cerevisiae with cane molasses and glycerol
Provedor de dados: 52
Autores: Anschau,Andréia; Santos,Lucielen Oliveira dos; Alegre,Ranulfo Monte.
This work aimed to evaluate the effect of sugar cane molasses and glycerol on glutathione (GSH) fermentation by Saccharomyces cerevisiae ATCC 7754 in flask culture using response surface methodology. Under optimized conditions (80 g/L of molasses and 60 g/L of glycerol), the highest GSH and biomass concentration achieved were 119.6 mg/L and 25.3 g/L, respectively. Further studies done in 5 L bioreactor resulted 241.3 mg/L GSH after 96 h in batch fermentation without amino acids addition and the concentration of biomass was 12.1 g/L. In batch fermentation with the addition of the three amino acids (4 mM cysteine, glycine and glutamic acid at 32 h), biomass reached to 25 g/L and GSH, 236.1 mg/L at 96 h of fermentation. The strategy of precursor amino acids...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glutathione; Fermentation; Fed Batch Culture; Amino Acids; Response Surface Methodology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500017

Evaluation of emulsifier stability of biosurfactant produced by Saccharomyces lipolytica CCT-0913
Provedor de dados: 52
Autores: Lima,Álvaro Silva; Alegre,Ranulfo Monte.
Surface-active compounds of biological origin are widely used for many industries (cosmetic, food, petrochemical). The Saccharomyces lipolytica CCT-0913 was able to grow and produce a biosurfactant on 5% (v/v) diesel-oil at pH 5.0 and 32ºC. The cell-free broth emulsified and stabilized the oil-in-water emulsion through a first order kinetics. The results showed that the initial pH value and temperature influenced the emulsifier stability (ES), which was the time when oil was separated. The biosurfactant presented different stabilization properties for vegetable and mineral oil in water solution, despite the highest values of the ES occurring with vegetable oil. The biosurfactant presented smallest ES when compared to commercial surfactants; however, this...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biosurfactant; Emulsifier stability; Fermentation; Vegetable oil; Diesel oil.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000200004

Alcoholic fermentation by the wild yeasts under thermal, osmotic and ethanol stress
Provedor de dados: 52
Autores: Silva,Rosimeire Oenning da; Batistote,Margareth; Cereda,Marney Pascoli.
This study aimed to explore the variability in the metabolism of nine wild yeasts isolated from the sugarcane juice from a distillery in the Brazilian State of Mato Grosso. Cell viability under the stress conditions was evaluated. The yeasts were inoculated in the test tubes containing sugarcane juice adjusted from 12 to 21º Brix, ethanol from 6 to 12% in volume and temperature at 30, 35 and 40ºC. The viability was established by the growth in Petri dishes and visually by the CO2 production in the test tubes. None of the evaluated yeasts showed simultaneous resistance to the three stress conditions. The potential of yeast BB.09 could be emphasized due to its ability to ferment up to12% ethanol at 30°C.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bio prospection; Alcohol distillery; Cellular viability; Fermentation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200001

Solid-state fermentation for the enrichment and extraction of proteins and antioxidant compounds in rice bran by Rhizopus oryzae
Provedor de dados: 52
Autores: Kupski,Larine; Cipolatti,Eliane; Rocha,Meritaine da; Oliveira,Melissa dos Santos; Souza-Soares,Leonor de Almeida; Badiale-Furlong,Eliana.
The objective of this work was to evaluate the solid-state fermentation with Rhizopus oryzae CCT 7560 of rice bran for the enrichment of proteins and the antioxidant compounds in the fermented biomass. Fermentation was performed in tray bioreactors at 30ºC for 120 h. Protein extraction was done at alkaline pH, followed by precipitation with acetone. Phenolic compounds were extracted with cold methanol. The maximum protein was recovered from after 120 h (26.6%). The content of total phenolic compounds increased during the fermentation and was maximum after 96 h, which inhibited the DPPH radical by 87%. The promising characteristics of the protein and phenolic extracts of the biomass suggested the application in the coating composition for vegetal tissues...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Protein extract; Phenolic extract; Fermentation.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000600018

Effect of deoxynivalenol and T-2 toxin in malt amylase activity
Provedor de dados: 52
Autores: Garda-Buffon,Jaqueline; Baraj,Edlira; Badiale-Furlong,Eliana.
The objective of this work was to evaluate the effect of DON and T-2 toxin levels on the malt amylase activity. The malt was contaminated in accordance with central composite design experiment with DON and T-2 toxin levels until 1000 ng/g. The activities of the enzymes were evaluated by Bernfeld method. The increase in T-2 toxin concentration inhibited the α-amylase activity. However, the increase of both toxins concentration caused inverse effect. The interaction between toxins indicated synergetic effect on the β-amylase activity. An increased activity occurred when the toxins contamination levels in malt were higher (1000ng/g malt). The trichothecenes interfered with the performance of aminolitic enzymes in the stage of malting, resulting in a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aminolitic enzymes; Fermentation; Trichothecenes; Barley.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000300002

Comparison between two selected Saccharomyces cerevisiae strains as fermentation starters in the production of traditional cachaça
Provedor de dados: 52
Autores: Gomes,Fátima de Cássia Oliveira; Araújo,Roberta Amália de Carvalho; Cisalpino,Patrícia Silva; Moreira,Elizabeth Spangler Andrade; Zani,Carlos Leomar; Rosa,Carlos Augusto.
Two Saccharomyces cerevisiae strains were tested as the starter yeasts in a traditional cachaça distillery. The strains used were S. cerevisiae UFMG-A829, isolated from a cachaça fermentation process, and S. cerevisiae K1-V1116, obtained from the wine industry. The permanence of each strain in the fermentation must was determined by RAPD (Random Amplified Polymorphic DNA)-PCR, with primer M13. Both yeast strains were prevalent in the vats for approximately 30 days. Indigenous non-Saccharomyces and indigenous S. cerevisiae strains were isolated in lower counts during the fermentation period. Indigenous S. cerevisiae strains were molecularly distinct when compared to the starter yeasts. The two yeasts appeared promising starter yeasts in the fermentation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cachaça; Saccharomyces cerevisiae; Starter strains; Fermentation.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000200023

Production of Propionic Acid by Propionibacterium acidipropionici from Agroindustrial Effluents
Provedor de dados: 52
Autores: Teles,Jéssica Cristine; Stolle,Elaine Macedo; Koloda,Stela Aparecida; Barana,Ana Claudia.
Abstract The purpose of this paper was to evaluate the production of propionic acid from the fermentation of agroindustrial effluents using a Propionibacterium acidipropionici culture. The composition of the substrates was determined by using an experimental design of mixtures, resulting in 10 trials. The substrates were fermented in batch borosilicate glass reactors at a temperature of 35°C, initial pH of 6.5, and 20 mL.L-1 of inoculum suspension. The highest yield of propionic acid production, 0.79 g of product per g of substrate, was obtained with a substrate composed only of corn steep liquor, which showed a productivity of 5.20 mg.L-1h-1 and production of 0.40mL.L-1. These results showed that the corn steep liquor positively influenced performance and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agroindustrial by-products; Fermentation; Corn steep liquor; Cheese whey; Wastewater.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100702

Enhanced Production Of Streptokinase By Chemical Mutagenesis Of Streptococcus agalactiae EBL-20
Provedor de dados: 52
Autores: Arshad,Arooj; Zia,Muhammad Anjum; Asghar,Muhammad; Joyia,Faiz Ahmad.
Abstract Streptokinase (SK) is an enzyme that is used for the treatment of cardiovascular diseases. The current study focused on the enhanced production of SK by inducing mutation in Streptococcus agalactiae EBL-20 and optimization of medium components and culture conditions for the maximum growth of mutant derived strain. S. agalactiae EBL-32 was selected as a potent mutant after exposure of S. agalactiae EBL-20 to EMS for 180 minutes. SK activity obtained from mutant derived strain was found to be 1.6 fold higher as compared to the activity achieved by wild strain. Nutritional requirements of the mutated strain were optimized by single factor analysis method suggesting glucose as the optimum carbon source; yeast extract and peptone as a suitable nitrogen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ethyl methanesulfonate; Fermentation; Response surface methodology; Streptokinase.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100200

The use of the oregano (Origanum vulgare L.) essential oil and hydrosol in green olive fermentation
Provedor de dados: 52
Autores: Özcan,M. Musa; Arslan,Derya; Aydar,Ali Osman.
The effect of oregano the (Origanum vulgare L.) oil at the levels of 0.05, 0.1 and 0.3% and oregano hydrosol on the physicochemical, microbiological and sensory characteristics of the green olive (Edremit variety) fermentation was investigated. The initial pH of the oregano oil added samples were higher than the other treatments, which were above 5.8. The highest final acidity was observed in the hydrosol+brine combination (0.53%). The initial LAB population on the first day of the fermentation was high in the diluted hydrosol (8.89 log cfu ml-1) and control (8.47 log cfu ml-1) samples. But a significant difference was not observed between the LAB counts of the treatments on the 40th day of fermentation. The control and brine+oregano hydrosol samples had...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Green olive; Fermentation; Origanum vulgare L.; Essential oil; Hydrosol.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000300022

Sugar cane juice fermentation by Zymomonas mobilis CP4 subjected to inhibition by ethanol and high initial concentration of substrate
Provedor de dados: 52
Autores: Tano,Marcia S.; Buzato,João B.; Celligoi,Maria Antonia P. C.
Sugar cane juice fermentation by Z. mobilis CP4 subject to stress by ethanol and high concentration of sucrose was investigated. Supplementation with saponifiable portion of soybean oil deodourising destillate (SOD) at 5; 10 and 15 mL/L.The ethanol production resulted values of 15.91; 16.99 and 15.63 g/L respectively. Values of Yp/s 0.35; 0.36 and 0.37 were achieved, which represented 20.69; 24.14 and 27.59% respectively higher when unsupplemented medium fermentation was carried out.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zymomonas mobilis; Fermentation; Lipids; Ethanol.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000400012

Effect of biomass reduction on the fermentation of cider
Provedor de dados: 52
Autores: Nogueira,Alessandro; Mongruel,Caroline; Simões,Deise Rosana Silva; Waszczynskyj,Nina; Wosiacki,Gilvan.
The aim of this work was to determine the influence of biomass reduction in the cider processing and the quality of the fermented product made on laboratory scale, but in the same conditions usually found in factory units. The must, made with apples of the Gala variety, depectinized and transferred to 500 mL-fermenters, was inoculated with 2.0x10(6) cfu/mL of natural or commercial yeast, and at each 12 hours biomass was removed by centrifugation in one flask of the experimental set, and the must was left to ferment. All seven flasks of the fermented beverage were analyzed for 20-26 days after the inoculation, and the results showed that the best moment for biomass removal was 1.5-2.0 days of fermentation, leading to a product with significant residual...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cider; Fermentation; Technology.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000700019

Date and their processing byproducts as substrates for bioactive compounds production
Provedor de dados: 52
Autores: Tang,Zhen-Xing; Shi,Lu-E; Aleid,Salah Mohammed.
Date is the most popular fruit in middle-east countries. However, the date production process is accompanied by a substantial increase of loss during picking, storage, commercialization and conditioning process. Date and their byproducts have many essential elements for the growth of microorganisms. Thus, they can be converted into value-added compounds through biotechnology. In this paper, date and their processing byproducts used as substrates for producing value-added products such as organic acids, exopolysaccharide, antibiotics, date flavored probiotic fermented dairy, bakery yeast, etc, were reviewed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Date; Byproduct; Biotechnology; Fermentation; Review.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000500706

"A comparison between sugar consumption and ethanol production in wort by immobilized Saccharomyces Cerevisiae, Saccharomyces Ludwigii and Saccharomyces Rouxii on Brewer's Spent Grain"
Provedor de dados: 58
Autores: Mohammadi,Aniseh; Razavi,Seyyed Hadi; Mousavi,Seyyed Mohammad; Rezaei,Karamatollah.
The immobilization of Saccharomyces cerevisiae DSM 70424, Saccharomyces ludwigii DSM 3447 and Saccharomyces rouxii DSM 2531 on brewer's spent grain and then ethanol production and sugar consumption of these immobilized yeasts were investigated. The aim of this study was to investigate the abilities of these three immobilized yeasts for producing alcohol for brewing at two temperatures (7 and 12 °C) using two different sugar levels (one at original level supplied in the brewery and one with 2.5% (w/v), added glucose to the wort). Increasing both parameters resulted in higher alcohol production by all the yeasts studied. At 7 °C and with original wort density the ethanol content at the end of fermentation was 2.7% (v/v) for S. cerevisiae, 1.7% for S....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brewer's spent grain; Fermentation; Immobilization; Saccharomyces cerevisiae; Saccharomyces ludwigii; Saccharomyces rouxii.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000200025

Isolation of fungi from dung of wild herbivores for application in bioethanol production
Provedor de dados: 58
Autores: Makhuvele,Rhulani; Ncube,Ignatious; Jansen van Rensburg,Elbert Lukas; La Grange,Daniël Coenrad.
ABSTRACT Producing biofuels such as ethanol from non-food plant material has the potential to meet transportation fuel requirements in many African countries without impacting directly on food security. The current shortcomings in biomass processing are inefficient fermentation of plant sugars, such as xylose, especially at high temperatures, lack of fermenting microbes that are able to resist inhibitors associated with pre-treated plant material and lack of effective lignocellulolytic enzymes for complete hydrolysis of plant polysaccharides. Due to the presence of residual partially degraded lignocellulose in the gut, the dung of herbivores can be considered as a natural source of pre-treated lignocellulose. A total of 101 fungi were isolated (36 yeast...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lignocellulase; Biofuel; Fungi; Xylose; Fermentation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400648

Selection of starter cultures for the production of sour cassava starch in a pilot-scale fermentation process
Provedor de dados: 58
Autores: Penido,Fernanda Corrêa Leal; Piló,Fernanda Barbosa; Sandes,Sávio Henrique de Cicco; Nunes,Álvaro Cantini; Colen,Gecernir; Oliveira,Evelyn de Souza; Rosa,Carlos Augusto; Lacerda,Inayara Cristina Alves.
ABSTRACT Sour cassava starch (Polvilho azedo) is obtained from a spontaneous fermentation conducted by microorganisms from raw materials and fermentation tanks. This product is traditionally used in the baking industry for the manufacture of biscuits and Brazilian cheese breads. However, the end of fermentation is evaluated empirically, and the process occurs without standardization, which results in products of inconsistent quality. Predominant microbiota from a cassava flour manufacturer was isolated in order to select starter cultures for the production of sour cassava starch in a pilot-scale fermentation process. Lactic acid bacteria and yeasts were isolated, enumerated and grouped by Restriction Fragment Length Polymorphism, and PCR fingerprinting,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactic acid bacteria; Yeasts; Starter cultures; Fermentation; Bakery products.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000400823

Statistical optimisation of cell growth and carotenoid production by Rhodotorula mucilaginosa
Provedor de dados: 58
Autores: Maldonade,Iriani R.; Rodriguez-Amaya,Delia B.; Scamparini,Adilma R. P.
Sequential statistical methods were used to maximise carotenoid production by a strain of Rhodotorula mucilaginosa, isolated from the Brazilian ecosystem. Initially, a factorial 2(5-1) experimental design was used, and the variables were pH and the levels of glucose, yeast extract, MgSO4.7H2O and KH2PO4. The nitrogen source (yeast extract) was the most important variable in enhancing carotenoid production; MgSO4.7H2O and KH2PO4 had a negative influence. The initial pH had no significant effect on carotenoid and cell productions. We further investigated the effects of glucose and yeast extract effects, using a second-order central composite design (CCD) to optimise carotenoid production, which was adequately approximated with a full quadratic equation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Torulene; Yeast; Response surface design; Rhodotorula mucilaginosa.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100012

Ethanol production in Brazil: a bridge between science and industry
Provedor de dados: 58
Autores: Lopes,Mario Lucio; Paulillo,Silene Cristina de Lima; Godoy,Alexandre; Cherubin,Rudimar Antonio; Lorenzi,Marcel Salmeron; Giometti,Fernando Henrique Carvalho; Bernardino,Claudemir Domingos; Amorim Neto,Henrique Berbert de; Amorim,Henrique Vianna de.
ABSTRACT In the last 40 years, several scientific and technological advances in microbiology of the fermentation have greatly contributed to evolution of the ethanol industry in Brazil. These contributions have increased our view and comprehension about fermentations in the first and, more recently, second-generation ethanol. Nowadays, new technologies are available to produce ethanol from sugarcane, corn and other feedstocks, reducing the off-season period. Better control of fermentation conditions can reduce the stress conditions for yeast cells and contamination by bacteria and wild yeasts. There are great research opportunities in production processes of the first-generation ethanol regarding high-value added products, cost reduction and selection of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ethanol; Yeast; Fermentation; Distillery.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000500064

Characteristics of Saccharomyces cerevisiae yeasts exhibiting rough colonies and pseudohyphal morphology with respect to alcoholic fermentation
Provedor de dados: 58
Autores: Reis,Vanda Renata; Bassi,Ana Paula Guarnieri; Silva,Jessica Carolina Gomes da; Ceccato-Antonini,Sandra Regina.
Among the native yeasts found in alcoholic fermentation, rough colonies associated with pseudohyphal morphology belonging to the species Saccharomyces cerevisiae are very common and undesirable during the process. The aim of this work was to perform morphological and physiological characterisations of S. cerevisiae strains that exhibited rough and smooth colonies in an attempt to identify alternatives that could contribute to the management of rough colony yeasts in alcoholic fermentation. Characterisation tests for invasiveness in Agar medium, killer activity, flocculation and fermentative capacity were performed on 22 strains (11 rough and 11 smooth colonies). The effects of acid treatment at different pH values on the growth of two strains ("52" -rough...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: S. cerevisiae; Ethanol; Fermentation; Indigenous yeasts.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400014

Concomitant production of two proteases and alpha-amylase by a novel strain of Bacillus subtilis in a microprocessor controlled bioreactor
Provedor de dados: 58
Autores: Mukhtar,Hamid; Ikram-ul-Haq,.
We describe the simultaneous production of Bacillus subtilis based proteases and alpha amylase using a computer controlled laboratory scale 7.5 L batch bioreactor. The present strain is the first to be reported that concomitantly produces these two industrially important enzymes. The growth and sporulation of Bacillus subtilis was monitored and maximum production of alkaline protease and alpha amylase was found to coincide with maximum sporulation. Two types of proteases were detected in the fermentation broth; a neutral and an alkaline protease most active in a pH range of 7.0-8.0 and 8.0-10, respectively. Maximum production of proteases was observed at an incubation temperature of 37ºC while that of alpha amylase was observed at 40ºC. The optimum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Simultaneous; Sporulation; Kinetics; Fermentation; Agitation.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000300033

The use of Prevotella bryantii 3C5 for modulation of the ruminal environment in an ovine model
Provedor de dados: 58
Autores: Fraga,Martín; Fernández,Sofía; Perelmuter,Karen; Pomiés,Nicolle; Cajarville,Cecilia; Zunino,Pablo.
Abstract In the Southern Hemisphere, ruminants are mostly raised in grazing systems where animals consume forage and are supplemented with low amounts of concentrates. Concentrates are usually given separately and are rapidly ingested. This practice leads to changing rumen environment conditions during the day, may alter the rumen microbial metabolism and could affect host performance. The native ruminal Prevotella bryantii strain 3C5 was administered every 48 h to wethers under experimental conditions simulating Southern-Hemisphere feeding to evaluate its potential as a rumen fermentation modulator. The inoculum potential was assessed on day 17. The ammonia nitrogen (NH3-N), volatile fatty acids and ruminal pH were monitored on a 24-h basis 19 days after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Probiotics; Rumen; Fermentation; Prevotella bryantii; Ovine model.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500101

Chlorine dioxide against bacteria and yeasts from the alcoholic fermentation
Provedor de dados: 58
Autores: Meneghin,Silvana Perissatto; Reis,Fabricia Cristina; Almeida,Paulo Garcia de; Ceccato-Antonini,Sandra Regina.
The ethanol production in Brazil is carried out by fed-batch or continuous process with cell recycle, in such way that bacterial contaminants are also recycled and may be troublesome due to the substrate competition. Addition of sulphuric acid when inoculum cells are washed can control the bacterial growth or alternatively biocides are used. This work aimed to verify the effect of chlorine dioxide, a well-known biocide for bacterial decontamination of water and equipments, against contaminant bacteria (Bacillus subtilis, Lactobacillus plantarum, Lactobacillus fermentum and Leuconostoc mesenteroides) from alcoholic fermentation, through the method of minimum inhibitory concentration (MIC), as well as its effect on the industrial yeast inoculum. Lower MIC...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlorine dioxide; Bacteria; Yeast; Antibacterial agent; Alcohol; Fermentation.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000200026

Production of pectin lyase by Penicillium griseoroseum in bioreactors in the absence of inducer
Provedor de dados: 58
Autores: Piccoli-Valle,Roberta Hilsdorf; Passos,Flávia Maria Lopes; Passos,Frederico José Vieira; Silva,Daison Olzany.
Penicillium griseoroseum was grown in bioreactors on mineral medium supplemented with yeast extract and sucrose. The influence of inoculum and carbon source concentrations, aeration and pH on pectin lyase (PL) production, as well as the capacity of P. griseoroseum to produce PL when grown on sugar cane syrup as carbon source were evaluated. Inoculum concentration did not influence PL production. Production was higher in non-aerated than in aerated medium. The best results were obtained using 60 mM sucrose at pH 6.3-7.2. Production using cane syrup 25% (v/v), without yeast extract supplement, was equal to that obtained under the conditions cited above.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Pectin lyase; Penicillium griseoroseum; Pectinases.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000200013

Improved 1-Deoxynojirimycin (DNJ) production in mulberry leaves fermented by microorganism
Provedor de dados: 58
Autores: Jiang,Yun-Gang; Wang,Chu-Yan; Jin,Chao; Jia,Jun-Qiang; Guo,Xijie; Zhang,Guo-Zheng; Gui,Zhong-Zheng.
DNJ, an inhibitor of α-glucosidase, is used to suppress the elevation of postprandial hyperglycemia. In this study, we focus on screening an appropriate microorganism for performing fermentation to improve DNJ content in mulberry leaf. Results showed that Ganoderma lucidum was selected from 8 species and shown to be the most effective in improvement of DNJ production from mulberry leaves through fermentation. Based on single factor and three factor influence level tests by following the Plackett-Burman design, the optimum extraction yield was analyzed by response surface methodology (RSM). The extracted DNJ was determined by reverse-phase high performance liquid chromatograph equipped with fluorescence detector (HPLC-FD). The results of RSM showed that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mulberry; DNJ Production; Microorganisms; Fermentation.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000200048

Identification of lactic acid bacteria associated with traditional cachaça fermentations
Provedor de dados: 58
Autores: Gomes,Fatima C. O.; Silva,Carol L. C.; Vianna,Cristina R.; Lacerda,Inayara C. A.; Borelli,Beatriz M.; Nunes,Álvaro C.; Franco,Gloria R.; Mourão,Marina M.; Rosa,Carlos A.
During the production of traditional cachaça (alembic´s cachaça), contamination of the fermented must is one of the factors leading to economic losses in the beverage manufacturing industry. The diversity of bacterial populations and the role of these microorganisms during the cachaça production process are still poorly understood in Brazil. In our work, the fermentation process was followed in two distilleries located in the state of Minas Gerais. The objective of this work was to identify the populations of lactic acid bacteria present during cachaça fermentation using physiological and molecular methods. Lactic acid bacteria were isolated in high frequencies during all of the fermentative processes, and Lactobacillus plantarum and L. casei were the most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactic acid bacteria; Fermentation; Cachaça.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000200031

Effect of the presence of initial ethanol on ethanol production in sugar cane juice fermented by Zymomonas mobilis
Provedor de dados: 58
Autores: Tano,Marcia Sadae; Buzato,João Batista.
Ethanol production in sugar cane juice in high initial sugar concentration, fermented by Z. mobilis in the presence and absence of ethanol, was evaluated. Ethanol production was low in both media. The presence of initial ethanol in the sugar cane juice reduced ethanol production by 48.8%, biomass production by 25.0% and the total sugar consumption by 28.3%. The presence of initial ethanol in the medium did not affect significantly levan production and biomass yield coefficient (g biomass/g sugar consumed).
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ethanol; Sugar cane; Z. mobilis; Fermentation.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000300012

Incidence and distribution of filamentous fungi during fermentation, drying and storage of coffee (Coffea arabica L.) beans
Provedor de dados: 58
Autores: Silva,Cristina Ferreira; Batista,Luis Roberto; Schwan,Rosane Freitas.
The objective of this work was to isolate and characterize filamentous fungi present in different stages of harvest, fermentation, drying and storage of coffee beans processed by natural method. The cherries were hand-picked and then placed on a cement drying platform where they remained until reached 11% of humidity. Microbial counts were found in all samples during fermentation and drying of the coffee beans. Counts of fungi in the coffee cherries collected from the tree (time 0) were around 1.5 x 10³ CFU/g. This number increased slowly during the fermentation and drying reaching values of 2 x 10(5) CFU/g within 22 days of processing. Two hundred and sixty three isolates of filamentous fungi were identified. The distribution of species during...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Filamentous fungi; Coffee; Toxigenic fungi.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000300022

Reducing lactate secretion by ldhA Deletion in L-glutamate- producing strain Corynebacterium glutamicum GDK-9
Provedor de dados: 58
Autores: Zhang,Dalong; Guan,Dan; Liang,Jingbo; Guo,Chunqian; Xie,Xixian; Zhang,Chenglin; Xu,Qingyang; Chen,Ning.
L-lactate is one of main byproducts excreted in to the fermentation medium. To improve L-glutamate production and reduce L-lactate accumulation, L-lactate dehydrogenase-encoding gene ldhA was knocked out from L-glutamate producing strain Corynebacterium glutamicum GDK-9, designated GDK-9ΔldhA. GDK-9ΔldhA produced approximately 10.1% more L-glutamate than the GDK-9, and yielded lower levels of such by-products as α-ketoglutarate, L-lactate and L-alanine. Since dissolved oxygen (DO) is one of main factors affecting L-lactate formation during L-glutamate fermentation, we investigated the effect of ldhA deletion from GDK-9 under different DO conditions. Under both oxygen-deficient and high oxygen conditions, L-glutamate production by GDK-9ΔldhA was not higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Corynebacterium glutamicum; L-glutamate; L-lactate dehydrogenase; Gene knockout; Fermentation.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000400044

Alkali pretreated of wheat straw and its enzymatic hydrolysis
Provedor de dados: 58
Autores: Han,Lirong; Feng,Juntao; Zhang,Shuangxi; Ma,Zhiqing; Wang,Yonghong; Zhang,Xing.
The efficiency of enzymatic hydrolysis of cellulose can be improved by various pretreatments of the substrate. In order to increase the efficiency of enzymatic saccharification of the wheat straw, we determined the effect of different pretreatments on the physical structure, chemical components and enzymatic saccharification of wheat straw. Our results showed that combination of grinding and sodium hydroxide (NaOH) treatment had high effect on the enzymatic hydrolysis of wheat straws. The optimal pretreatment condition was to grind the wheat straws into the sizes of 120 meshes followed by treatment with 1.0% NaOH for 1.5 h (121°C/15psi). Under this condition, the cellulose content of wheat straw was increased by 44.52%, while the content of hemicellulose...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cellulase; Cellulose; Fermentation; Hydrolysis; Lignocellulosic; Pretreatment.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100006

Bioethanol strains of Saccharomyces cerevisiae characterised by microsatellite and stress resistance
Provedor de dados: 58
Autores: Reis,Vanda Renata; Antonangelo,Ana Teresa Burlamaqui Faraco; Bassi,Ana Paula Guarnieri; Colombi,Débora; Ceccato-Antonini,Sandra Regina.
Abstract Strains of Saccharomyces cerevisiae may display characteristics that are typical of rough-type colonies, made up of cells clustered in pseudohyphal structures and comprised of daughter buds that do not separate from the mother cell post-mitosis. These strains are known to occur frequently in fermentation tanks with significant lower ethanol yield when compared to fermentations carried out by smooth strains of S. cerevisiae that are composed of dispersed cells. In an attempt to delineate genetic and phenotypic differences underlying the two phenotypes, this study analysed 10 microsatellite loci of 22 S. cerevisiae strains as well as stress resistance towards high concentrations of ethanol and glucose, low pH and cell sedimentation rates. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Stresses; Yeasts; Microsatellite; Contaminants.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200268

Screening of Metarhizium spp. strains for anticancer indolizidine alkaloid production and its rapid detection by MS analysis
Provedor de dados: 58
Autores: Justo,Oselys Rodriguez; Calheiros,Chrissana Santos; Perez,Victor Haber; Alegre,Ranulfo Monte.
Six fungi strains (M. anisopliae 3935, 4516, 4819, PL57, PL43 and M. flavoviride CG291) were studied regarding their ability to produce an anticancer indolizidine alkaloid. The culture process was carried out in Shaken flask at 26ºC and 200 rpm using three different culture medium containing oat meal extract supplemented with glucose and DL-lysine or Czapek culture medium. The mycelial extracts produced by Metarhizium spp. cultures were directly submitted to electrospray ionization mass spectrometry (ESI-MS) analysis and the highest alkaloid concentration (approximately, 6 mg.L-1) was reached when M. anisopliae 3935 was tested.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: M. anisopliae; M. flavoviride; Anticancer; Alkaloid; Fermentation.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000400035

A new alkalophilic isolate of Bacillus as a producer of cyclodextrin glycosyltransferase using cassava flour
Provedor de dados: 58
Autores: Coelho,Sheila Lorena de Araújo; Magalhães,Valter Cruz; Marbach,Phellippe Arthur Santos; Cazetta,Marcia Luciana.
Abstract Cyclodextrin glycosyltransferase (CGTase) catalyzes the conversion of starch into non-reducing cyclic sugars, cyclodextrins, which have several industrial applications. This study aimed to establish optimal culture conditions for β-CGTase production by Bacillus sp. SM-02, isolated from soil of cassava industries waste water lake. The optimization was performed by Central Composite Design (CCD) 2, using cassava flour and corn steep liquor as substrates. The maximum production of 1087.9 U mL−1 was obtained with 25.0 g L−1 of cassava flour and 3.5 g L−1 of corn steep after 72 h by submerged fermentation. The enzyme showed optimum activity at pH 5.0 and temperature 55 °C, and maintained thermal stability at 55 °C for 3 h. The enzymatic activity was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbial enzyme; Fermentation; Agro-industrial substrates.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000100120

Molecular characterization of a Xylanase-producing fungus isolated from fouled soil
Provedor de dados: 58
Autores: Sakthiselvan,Punniavan; Naveena,Balakrishnan; Partha,Nagarajan.
Xylanase (EC 3. 2. 1. 8), hydrolyzes xylo-oligosaccharides into D-xylose and required for complete hydrolysis of native cellulose and biomass conversion. It has broad range of applications in the pulp and paper, pharmaceutical and Agri-food industries. Fifty fungal species were isolated from the fouled soil around an oil refinery and screened for the production of xylanase enzyme by enrichment culture techniques. The isolated fungal strain was identified as Hypocrea lixii SS1 based on the results of biochemical tests and 18s rRNA sequencing. The phylogenetic tree was constructed using the MEGA 5 software. Further, Hypocrea lixii SS1 was tested for the ability to utilize the sunflower oil sludge (waste from the oil industry) as the sole carbon source for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungal isolate; Growth kinetics; Hypocrea lixii SS1; Fermentation; Xylanase; Purification.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000400020

Trehalose accumulation, invertase activity and physiological characteristics of yeasts isolated from 24 h fermentative cycles during the production of artisanal Brazilian cachaça
Provedor de dados: 58
Autores: Pataro,Carla; Guerra,Juliana B.; Gomes,Fátima C.O.; Neves,Maria J.; Pimentel,Patrícia F.; Rosa,Carlos A.
Trehalose accumulation, invertase activity and physiological characteristics of 86 yeast isolates from short fermentative cycles during the production of cachaça in three artisanal distilleries of the State of Minas Gerais were studied. Among these isolates, 70% were able to grow at temperatures between 40 and 42ºC. Only Saccharomyces cerevisiae isolates were able to grow over 40ºC. Lower temperatures (&lt;40ºC) favoured the growth of yeasts such as Candida parapsilosis-like, C. maltosa-like, Kloeckera japonica, S. exiguus and C. bombicola-like. The isolates from all three distilleries were ethanol tolerant, produced invertase, and accumulate trehalose in the presence of glucose. The strains isolated from distillery A presented more resistance to ethanol...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharomyces cerevisiae; Cachaça; Trehalose; Invertase; Fermentation.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000300003

Caffeine degradation by Rhizopus delemar in packed bed column bioreactor using coffee husk as substrate
Provedor de dados: 58
Autores: Tagliari,Cristiane Vanessa; Sanson,Raquel K.; Zanette,André; Franco,Telma Teixeira; Soccol,Carlos Ricardo.
Various microorganisms including bacteria, yeast and fungi can degrade caffeine. There are few publications about caffeine degradation pathway in filamentous fungi, mainly by solid-state fermentation (SSF). Studies were carried out on degradation of caffeine and their metabolites by filamentous fungi in SSF using coffee husk as substrate. The purpose of this work was to investigate the caffeine degradation pathway by Rhizopus delemar in packed bed column fermenter and to compare this degradation metabolism with glass flasks fermentation. The methylxanthines were quantified by HPLC analysis. The experiments were realized with the optimized conditions in previous experiments: pH 6.5, 28ºC, inoculation rate 10(6) spores/g substrate, aeration rate 60 mL/min...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Decaffeination; Fermentation; Caffeine; Theophylline; Bioreactor; Filamentous fungi.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000500035

Biotechnological production of citric acid
Provedor de dados: 58
Autores: Max,Belén; Salgado,José Manuel; Rodríguez,Noelia; Cortés,Sandra; Converti,Attilio; Domínguez,José Manuel.
This work provides a review about the biotechnological production of citric acid starting from the physicochemical properties and industrial applications, mainly in the food and pharmaceutical sectors. Several factors affecting citric acid fermentation are discussed, including carbon source, nitrogen and phosphate limitations, pH of culture medium, aeration, trace elements and morphology of the fungus. Special attention is paid to the fundamentals of biochemistry and accumulation of citric acid. Technologies employed at industrial scale such as surface or submerged cultures, mainly employing Aspergillus niger, and processes carried out with Yarrowia lipolytica, as well as the technology for recovering the product are also described. Finally, this review...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citric acid; Fermentation; Review; Aspergillus niger.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000400005

Fermentative hydrogen production from agroindustrial lignocellulosic substrates
Provedor de dados: 58
Autores: Reginatto,Valeria; Antônio,Regina Vasconcellos.
To achieve economically competitive biological hydrogen production, it is crucial to consider inexpensive materials such as lignocellulosic substrate residues derived from agroindustrial activities. It is possible to use (1) lignocellulosic materials without any type of pretreatment, (2) lignocellulosic materials after a pretreatment step, and (3) lignocellulosic materials hydrolysates originating from a pretreatment step followed by enzymatic hydrolysis. According to the current literature data on fermentative H2 production presented in this review, thermophilic conditions produce H2 in yields approximately 75% higher than those obtained in mesophilic conditions using untreated lignocellulosic substrates. The average H2 production from pretreated material...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Hydrogen; Lignocellulosic substrates; Pretreatment; Inhibitors.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000200323

Evaluation of sample extracting methods of FCSM by Lactobacillus acidophilus based on a UPLC-Q-TOF-MS global metabolomics analysis
Provedor de dados: 58
Autores: Wang,Yongqiang; Zhang,Wenju; Nie,Cunxi; Chen,Cheng; Zhang,Xiaoyang; Hu,Jianhe.
Abstract The study of metabolomics requires extracting as many metabolites as possible from a biological sample. This study aimed to determine the optimal method for the extraction of metabolites from solid-state fermented cottonseed meal (FCSM). The UPLC-Q-TOF-MS global metabolomics technology was used to detect the metabolites in FCSM, and the extraction quantity and extraction efficiency of seven different extraction methods, specifically the WA, 50MeOH, 50MeOHB, 50MeCNB, 80MeOHB, 80MeOH and AMF methods were evaluated. The results showed that the number of VIP metabolites extracted by AMF method are 196 and 184 in ESI+ and ESI- mode respectively, it is the largest number of all exacted methods; and the AMF methods also provided a higher extraction...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metabolomics; Extract; Fermentation; FCSM; Lactobacillus acidophilus; UPLC-Q-TOF-MS.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000200392

Chemical and microbiological evaluation of ensiled sugar cane with different additives
Provedor de dados: 58
Autores: Bravo-Martins,Claudia Eugênia Castro; Carneiro,Heloisa; Castro-Gómez,Raúl Jorge Hernán; Figueiredo,Henrique César Pereira; Schwan,Rosane Freitas.
Sugar cane silage has a potential for animal feeding, but uncontrolled growth of undesirable microorganisms may cause nutritional losses and affect the animal productivity and health. The objective of this work was to evaluate the microbiological quality and chemical composition of ensiled sugar cane with and without nutritional additives after 30 days of fermentation. Yeasts, filamentous fungi and distinct groups of bacteria were enumerated by plate count methods and the chemical analyzes comprised dry matter, crude protein, fiber content, lignin, and pH. Facultative aerobic bacteria and filamentous fungi were not detected during the fermentative process in any of the treatments. The number of yeasts in five varieties of sugar cane silage without...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sugar cane silage; Fermentation; Yeasts; Lactic acid bacteria.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000400018

Identification of the bacterial community responsible for traditional fermentation during sour cassava starch, cachaça and minas cheese production using culture-independent 16s rRNA gene sequence analysis
Provedor de dados: 58
Autores: Lacerda,Inayara C. A.; Gomes,Fátima C. O.; Borelli,Beatriz M.; Faria Jr,César L. L.; Franco,Gloria R.; Mourão,Marina M.; Morais,Paula B.; Rosa,Carlos A.
We used a cultivation-independent, clone library-based 16S rRNA gene sequence analysis to identify bacterial communities present during traditional fermentation in sour cassava starch, cachaça and cheese production in Brazil. Partial 16S rRNA gene clone sequences from sour cassava starch samples collected on day five of the fermentation process indicated that Leuconostoc citreum was the most prevalent species, representing 47.6% of the clones. After 27 days of fermentation, clones (GenBank accession numbers GQ999786 and GQ999788) related to unculturable bacteria were the most prevalent, representing 43.8% of the clones from the bacterial community analyzed. The clone represented by the sequence GQ999786 was the most prevalent at the end of the fermentation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Cassava; Cachaça; Cheese; Clone library.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000200029

Protease obtention using Bacillus subtilis 3411 and amaranth seed meal medium at different aeration rates
Provedor de dados: 58
Autores: Pastor,Maria Delia; Lorda,Graciela Susana; Balatti,Antonio.
The influence of the addition of Amaranthus cruenthus seed meal to the medium, as nutrient and growth factor, on protease production by Bacillus subtilis 3411 was studied. Tests were carried out in a rotary shaker and in mechanically stirred fermenters. The influence of aeration was also evaluated. The addition of amaranth in a concentration of 20 g/L resulted in 400% increase in protease production. Aeration up to 750 r.p.m. and 1 L/L.min had a favorable effect.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Proteases; Bacillus subtilis; Amaranth; Fermentation.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000100002

Isolation and characterization of yeasts from fermented apple bagasse as additives for ruminant feeding
Provedor de dados: 58
Autores: Castillo-Castillo,Y.; Ruiz-Barrera,O.; Burrola-Barraza,M.E.; Marrero-Rodriguez,Y.; Salinas-Chavira,J.; Angulo-Montoya,C.; Corral-Luna,A.; Arzola-Alvarez,C.; Itza-Ortiz,M.; Camarillo,J.
Abstract Solid-state fermentation can be used to produce feeds for ruminants, which can provide an enriched population of yeasts to improve ruminal fermentation. Fermentation of apple bagasse was performed to obtain a yeast-rich product, with the objective of isolating, identifying, and characterizing yeast strains and testing their capability to enhance in vitro ruminal fermentation of fibrous feeds. Yeasts were isolated from apple bagasse fermented under in vitro conditions, using rumen liquor obtained from cannulated cows and alfalfa as a fibrous substrate. A total of 16 new yeast strains were isolated and identified by biochemical and molecular methods. The strains were designated Levazot, followed by the isolate number. Their fermentative capacity was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apple bagasse; Ruminal; Fermentation; Yeast.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000400889

Ethanol fermentation of sugarcane molasses by Zymomonas mobilis MTCC 92 immobilized in Luffa cylindrica L. sponge discs and Ca-alginate matrices
Provedor de dados: 58
Autores: Behera,Shuvashish; Mohanty,Rama C.; Ray,Ramesh C.
Bio-ethanol production from cane molasses (diluted to 15 % sugar w/v) was studied using the bacterium, Zymomonas mobilis MTCC 92 entrapped in luffa (Luffa cylindrica L.) sponge discs and Ca-alginate gel beads as the immobilizing matrices. At the end of 96 h fermentation, the final ethanol concentrations were 58.7 ± 0.09 and 59.1 ± 0.08 g/l molasses with luffa and Ca-alginate entrapped Z. mobilis cells, respectively exhibiting 83.25 ± 0.03 and 84.6 ± 0.02 % sugar conversion. There was no statistical significant difference (Fischer's LSD) in sugar utilization (t = 0.254, p &lt;0.801) and ethanol production (t =-0.663, p &lt;0.513) between the two immobilization matrices used. Further, the immobilized cells in both the matrices were physiologically active for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bio-ethanol; Cell immobilization; Fermentation; Molasses; Zymomonas mobilis MTCC 92.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400034

Mobilization of endogenous glycogen and trehalose of industrial yeasts
Provedor de dados: 58
Autores: Paulillo,Silene Cristina de Lima; Yokoya,Fumio; Basso,Luiz Carlos.
The fermentation of yeast reserve carbohydrates, glycogen and trehalose is a procedure to increase protein level of yeast cells and improve ethanol production. This work studied on the degradation kinetics of glycogen and trehalose carried out with two industrial strains of Saccharomyces cerevisiae (PE-2 and SA-1) and the effect of different temperatures (38º, 40º, 42º and 44ºC) on degradation rate. Endogenous fermentation was carried out in a yeast suspension at 20% (w/v) based on wet weight, suspended in fermented media with 3.0 to 4.5 % (v/v) of ethanol. The degradation of the carbohydrate reserves at 40ºC followed first-order kinetics, showing that its rate is mainly dependent on the carbohydrate concentration in the cell. The degradation rate (k)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharomyces cerevisiae; Glycogen; Trehalose; Yeast; Fermentation.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000300014

Isolation and characterization of novel thermophilic lipase-secreting bacteria
Provedor de dados: 58
Autores: Rabbani,Mohammed; Bagherinejad,Mohammad Reza; Sadeghi,Hamid MirMohammad; Shariat,Ziaedin Samsam; Etemadifar,Zahra; Moazen,Fatemeh; Rahbari,Manizheh; Mafakher,Ladan; Zaghian,Saeideh.
The purpose of the present study was to screen and identify the lipase-producing microorganisms from various regions of Iran. Samples collected from hot spring, Persian Gulf, desert area and oil-contaminated soil, were analyzed for thermophilic extracellular-lipase producing organisms. Six strains with high activity on rhodamine B plates were selected for chemical identification and further study. Among these isolated bacteria, four strains show higher activity in pH-Stat method at 55 °C. These strains were identified by PCR amplification of 16s rRNA genes using universal primers. Fermentation increased the activity up to 50%. The growth medium, designed for lipase production, increased the activity up to 4.55 folds. The crude supernatant of ZR-5 after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Extracellular lipase; PH-stat method; Thermophilic lipase; Fermentation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400013

Fermentation and enzyme treatments for sorghum
Provedor de dados: 58
Autores: Schons,Patrícia Fernanda; Battestin,Vania; Macedo,Gabriela Alves.
Sorghum (Sorghum bicolor Moench) is the fifth most produced cereal worldwide. However, some varieties of this cereal contain antinutritional factors, such as tannins and phytate that may form stable complexes with proteins and minerals which decreases digestibility and nutritional value. The present study sought to diminish antinutritional tannins and phytate present in sorghum grains. Three different treatments were studied for that purpose, using enzymes tannase (945 U/Kg sorghum), phytase (2640 U/Kg sorghum) and Paecilomyces variotii (1.6 X 10(7) spores/mL); A) Tannase, phytase and Paecilomyces variotii, during 5 and 10 days; B) An innovative blend made of tanase and phytase for 5 days followed by a Pv increase for 5 more days; C) a third treatment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Tannase; Phytase; Sorghum.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100010

Selection of tannase-producing Aspergillus niger strains
Provedor de dados: 58
Autores: Pinto,Gustavo A.S.; Leite,Selma G.F.; Terzi,Selma C.; Couri,Sonia.
The aim of this work was to select strains of Aspergillus niger for tannase production. Growth of colonies in plates with tannic acid-containing medium indicated their ability to synthesize tannase. Tannase activity was also measured in solid-state fermentation. A. niger 11T25A5 was the best tannase producer (67.5 U.g-1/72 hours of fermentation).
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tannase; Aspergillus niger; Screening solid-state; Fermentation.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000100006

Monitoring Saccharomyces cerevisiae populations by mtDNA restriction analysis and other molecular typing methods during spontaneous fermentation for production of the artisanal cachaça
Provedor de dados: 58
Autores: Araújo,Roberta A.C.; Gomes,Fátima C.O.; Moreira,Elizabeth S.A.; Cisalpino,Patrícia S.; Rosa,Carlos A.
An ecological study on Saccharomyces cerevisiae populations in spontaneous fermentation has been conducted in three vats of a cachaça distillery in Minas Gerais, Brazil. Ninety-seven yeast isolates were collected at the beginning, the middle and at the end of the production period, and were identified by standard methods. Differentiation between the indigenous S. cerevisiae strains isolated was performed by mitochondrial DNA (mtDNA) restriction analysis, RAPD-PCR, and PCR fingerprint using an intron splice primer. Analysis of the mtDNA restriction profiles revealed 12 different patterns, 11 corresponding to indigenous yeasts (I to XI) and one (XII) to a commercial strain of the bakery yeast. Pattern II (53.6% of the population) and pattern IV strains were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharomyces cerevisiae; Cachaça; Fermentation; Molecular diversity.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000200006

Selection and characterization of carotenoid-producing yeasts from Campinas region, Brazil
Provedor de dados: 58
Autores: Maldonade,Iriani R.; Scamparini,Adilma R. P.; Rodriguez-Amaya,Délia B.
The objective of the present study was to select and identify yeasts from Brazil capable of producing carotenoids. Pigmented yeasts were isolated from soil, leaves, fruits, flowers and a processed product. The samples were incubated at 30ºC in Erlenmeyer flasks, containing YM broth. After 48 hours, they were inoculated in Petri dishes with YM agar, and incubated at 30ºC during 120 hours. The yeast colonies, which presented yellow to red coloration, were transferred to culture tubes containing YM agar, and incubated at 30ºC for 72 hours. Out of 242 samples, only five had yellow to red color at high intensity. These highly pigmented yeasts were re-isolated in Petri dishes with YM agar and then transferred to tubes with GPYM agar. Identification through...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pigmented yeasts; Identification; Rhodotorula; Carotenoid; Fermentation.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000100014

Influence of glucose and stirring in the fermentation process in order to produce anti- Candida metabolites produced by  Streptomyces sp.
Provedor de dados: 60
Autores: Escher,Silvia Katrine Silva; Sousa Júnior,José Jeosafá Vieira de; Dias,Adrielle Leal; Amorim,Elba Lúcia Cavalcanti de; Araújo,Janete Magalí de.
ABSTRACT This study evaluated the influence of glucose and stirring in the fermentation process in order to produce anti-Candida metabolites produced by Streptomyces sp. MPO4 isolated from Amazon soil. The anti-Candida metabolites production was registered after 24 h of fermentation in stirred ISP2 medium, having antifungal inhibition halos between 12.3 mm and 25.3 mm, yielding higher production of anti-Candida agents after 96 h. Stirring was a determining factor for the production of anti-Candida secondary metabolites, since the absence of glucose reflected in the late production of the antifungal starting from Streptomyces sp.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Streptomyces sp./anti-Candida activity; Anti-Candida metabolites/production; Fermentation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502016000200265

Protein enrichment of Opuntia ficus-indica using Kluyveromyces marxianus in solid-state fermentation
Provedor de dados: 118
Autores: Herrera,Esperanza; Murillo,Manuel; Berumen,Leslie; Soto-Cruz,Nicolas O.; Páez-Lerma,Jesús B.
Abstract Opuntia ficus-indica is used in animal feed but has a low protein content (above 4%) in comparison to high-quality forage (above 16%). It is necessary to develop technologies that improve the nutrimental value of Opuntia ficus-indica through the process of solid-state fermentation (SSF). Therefore, the objective of this study was to evaluate the changes in the chemical composition of Opuntia ficus-indica during the SSF with the yeast Kluyveromyces marxianus ITD00262. Kluyveromyces marxianus ITD00262 was grown in glucose, peptone, yeast (GPY) broth, at 28 °C and pH 4.8 for 12 h. Opuntia ficusindica was incubated in SSF at 28 °C without inoculation (T1) or inoculated with K. marxianus ITD00262 (T2). Fermented samples of Opuntia ficus-indica were...
Tipo: Journal article
Palavras-chave: Fermentation; Nutritional quality; Protein; Opuntia; Yeast.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000200113

Characteristics of cassava starch fermentation wastewater based on structural degradation of starch granules
Provedor de dados: 65
Autores: Pereira,Juliane Mascarenhas; Aquino,Ana Carolina Moura de Sena; Oliveira,Daiana Cardoso de; Rocha,Gabriela; Francisco,Alícia de; Barreto,Pedro Luiz Manique; Amante,Edna Regina.
ABSTRACT: Sour cassava starch is a naturally modified starch produced by fermentation and sun drying, achieving the property of expansion upon baking. Sour cassava starch' bakery products can be prepared without the addition of yeast and it is gluten free. The fermentation process associated with this product has been well studied, but the wastewater, with high acidity and richness in other organic compounds derived from starch degradation, requires further investigation. In this study, the structure of solids present in this residue was studied, seeking to future applications for new materials. The solids of the wastewater were spray dried with maltodextrin (MD) with dextrose equivalent (DE) of 5 and 15 and the structure of the powder was evaluated by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sour cassava starch; Fermentation; Water; Microstructure.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000400732

Potential use of byproducts from cultivation and processing of sweet potatoes
Provedor de dados: 65
Autores: Akoetey,Winifred; Britain,Margaret Mead; Morawicki,Ruben Omar.
ABSTRACT: The cultivation and processing of sweet potatoes into a variety of products yields both solid and liquid organic waste. Solid waste includes peelings and trimmings from the sweet potato root and sweet potato leaves and vines. Liquid waste results from various processing methods and creates significant amounts of nutrient rich waste water. Sweet potato waste materials contain carbohydrates, proteins, phenolic compounds, macro and micro nutrients, and pigments that have the potential of being extracted or utilized for various downstream processes and products. This review examines many of the different ways that these waste products can be utilized.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sweet potato; Byproduct; Food processing; Starch; Fermentation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500751

Substitution of wheat bran by corn gluten feed without steep water in cats feed
Provedor de dados: 65
Autores: Ferreira,Lívia Geraldi; Pires,Juliana de Melo; Zangeronimo,Márcio Gilberto; Saad,Flávia Maria de Oliveira Borges; Brandi,Roberta Ariboni; Bueno,Ives Cláudio da Silva; Barbosa,Priscila Barros; Lisenko,Karen Guttenkunst; Taffarel,Taís Regina; Reis,Jéssica Santana dos.
ABSTRACT: This study aimed to evaluate the effects of substituting wheat bran (WB) by corn gluten feed without steep water (CGF) in cats feeds regarding the nutritional value of the diet, stool characteristics, time of food passage through the gastrointestinal tract (GIT), intestinal gas production and concentrations of short chain fatty acids (SCFA) in blood and faeces. Twenty eight cats were distributed in a randomized block design with four treatments (0, 2.6, 5.3 or 8.0% CGF, based on dry matter, substituting for WB) and seven replicates. Substitution of WB by CGF decreased (P&lt;0.01) the digestibility of acid detergent fibre without influencing (P&gt;0.05) the digestibility of other nutrients and apparent metabolizable energy. There was also no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agro-industrial by-product; Dietary fibre; Digestibility; Felines; Fermentation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300601

Natural sparkling guava wine: volatile and physicochemical characterization
Provedor de dados: 65
Autores: Bertagnolli,Silvana Maria Michelin; Bernardi,Gabrieli; Donadel,Jossiê Zamperetti; Fogaça,Aline de Oliveira; Wagner,Roger; Penna,Neidi Garcia.
ABSTRACT: Although different tropical fruit species have been used in the development of fermented beverages, there are only few references in the literature to the production of natural sparkling wines from fruits other than grapes. In this sense, the objective of the present research was the development and physicochemical and volatile characterization of a natural sparkling guava wine produced by the champenoise method. Volatile compounds were identified by gas chromatography coupled to mass spectrometry using the headspace solid-phase microextraction (HS-SPME) technique on samples. Eighty-nine volatile compounds were detected, of which 51 were identified. Esters were the predominant class of volatile compounds (a total of 26), followed by alcohols...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Psidium guajava L.; Volatile compounds; Gas chromatography.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900782

Bioethanol production from coconut husk fiber
Provedor de dados: 65
Autores: Cabral,Mirelle Márcio Santos; Abud,Ana Karla de Souza; Silva,Carlos Eduardo de Farias; Almeida,Renata Maria Rosas Garcia.
ABSTRACT: Population growth and the increasing search for healthy foods have led to a major consumption of coconut water and, hence, to an environmental impact caused by the inappropriate disposal of green coconut husks. This lignocellulosic biomass has deserved attention of researchers concerning the seeking of new usages, as, for example, in renewable fuels production technologies. This study examines the potential of green coconut husk fibers as a feedstock for the production of bioethanol. The coconut fibers were pretreated through an alkaline method, hydrolyzed enzymatically and submitted to ethanol fermentation with commercial yeasts of Saccharomyces cerevisiae. Despite the significant loss of cellulose (4.42% in relation to the fiber and 17.9%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reuse; Coconut husk; Fermentation; Bioethanol.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001001872

Flavonoids and their aromatic derivatives in Piper betle powder promote in vitro methane mitigation in a variety of diets
Provedor de dados: 64
Autores: Purba,Rayudika Aprilia Patindra; Paengkoum,Siwaporn; Yuangklang,Chalermpon; Paengkoum,Pramote.
ABSTRACT At present, there is little information regarding whether supplementation with Piper betle powder (PBP) and sunflower oil (SFO) has a synergistic effect on lowering methane emissions without negatively impacting ruminal fermentation. This study investigated the effects of PBP, supplemented either with or without SFO, on biogas release, fermentation end-products, and microorganisms in the rumen of lactating goats. The treatments were run in a completely randomized 3 × 5 factorial arrangement, whereby 0, 15, and 30 mg SFO were combined with 0, 15, 30, 45, and 60 mg PBP on a dry matter basis. The outcomes were assessed in vitro. PBP was obtained from the perennial plant Piper betle L., which is an abundant source of flavonoids and their aromatic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environment; Feed utilization; Fermentation; Methane reduction potential; Polyphenols.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100300

Post-harvest quality of papaya coated with polivinilic alcohol and maize starch
Provedor de dados: 64
Autores: Pigozzi,Mariana Teixeira; Silva,Vanessa Mendes; Mendes,Fabrícia Queiroz; Oliveira,Isadora Rebouças Nolasco de; Moraes,Allan Robledo Fialho e; Lopes,Everaldo Antônio.
ABSTRACT Climacteric fruits have short postharvest shelf life. Coating is an alternative to minimize fruit ripening and post-harvest losses. Maize starch (S) and polivinilic alcohol - PVOH (P), isolated or blended, can be used in the formulation of coatings. However, little is known about the potential of PVOH-containing coatings in postharvest conservation of fruits. Papaya were aftercoated with 5 coating formulations: 3% starch (S), 3% PVOH (P), 2.25% S + 0.75% P, 1.5% S + 1.5% P and 0.75% S + 2.25% P. The fruits were kept at room temperature (20 ± 5 °C and 70 ± 10% RH) and physicochemical characteristics were evaluated for up to eight days. Uncoated fruits were used as control. In general, maize starch and PVOH. In general, maize starch and PVOH...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carica papaya L.; Storage; Respiratory rate; Fermentation; Firmness.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542021000100400

PRODUCTION OF ginger vinegar
Provedor de dados: 64
Autores: Leonel,Magali; Suman,Priscila Aparecida; Garcia,Emerson Loli.
Vinegar is a food of condiments group that have great use in the food industry. This study aimed to evaluate the effects of parameters of the acetic fermentation process in the production of ginger vinegar. A suspension of ginger rhizomes with 12% of starch was subjected to enzymatic hydrolysis process to obtain hydrolyzed with 85.6% of glucose. After the alcoholic fermentation the wine was obtained with 40.3% ethanol. The acetic fermentation process of ginger alcoholic solution followed a completely randomized design in a factorial for three factors at two levels. The independent variables were: temperature, nutrients and proportion of "strong vinegar" and alcoholic solution (initial acidity). Results showed variation from 2.74 to 3.70% for dry extract...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zingiberofficinale; Fermentation; Ethanol; Acetic acid.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000200183