Consulta: subjectFacets:"Organic acids"
Registros recuperados: 41
Data/hora: 12/06/2024 08:31:40

Calidad e inocuidad de jitomate (Lycopersicum esculentum L.) fresco almacenado a diferentes temperaturas: relación del contenido de azúcares y ácidos orgánicos con la adherencia de Escherichia coli (ECET).
Provedor de dados: 32
Autores: Ibarra Cantún, Diego.
La inocuidad es un requisito importante de aceptación en el jitomate (Lycopersicum esculentum L.), para permitirle abrir nuevos mercados. En los que además, el fruto debe cumplir con ciertos estándares de calidad relacionados con sus propiedades físicas y químicas. El presente trabajo tuvo como objetivo determinar las propiedades físicas y químicas del fruto de jitomate almacenado a diferentes temperaturas en presencia de Escherichia coli (ECET). Se utilizaron frutos de jitomate variedad Charleston, cultivados en invernadero de hidroponía en el Municipio de Aquixtla, Puebla. Los frutos se sometieron a dos temperaturas de almacenamiento (7 y 22°C), inoculados con 7 log10UFC/mL de E. coli (ECET). Se evaluaron algunas  propiedades físico-químicas como color,...
Palavras-chave: Azúcares; Acidos orgánicos; Adherencia; Lycopersicum esculentum; Adherence; Organic acids; Sugars; Estrategias para el Desarrollo Agrícola Regional; EDAR.
Ano: 2012
URL: http://hdl.handle.net/10521/1696

Aislamiento y caracterización bioquímica de metabolitos producidos por rizobacterias que solubilizan fosfato.
Provedor de dados: 32
Autores: Paredes Mendoza, Marianela.
El empleo de bacterias solubilizadoras de fosfato (BSP) para la solubilización de distintas rocas fosfatadas y de otras fuentes de fósforo es una alternativa para incrementar la cantidad de P disponible para las plantas. Se aislaron 147 BSP de la raíz y rizoplano  de diferentes  plantas cultivadas.  El  medio de cultivo  denominado Medio Mínimo para Solubilización de Fosfato Colegio de Postgraduados con MgCl (MMSFCP-Mg) fue el más eficiente,  debido a que en medio sólido se observaron halos de solubilización de hasta 3.8 cm a los  catorce días, y en medio líquido se determinaron hasta   380 mg mL-1  de fosfato soluble a los seis días.   Veintisiete  de las mejores cepas     fueron seleccionadas  con base  en la eficiencia de solubilización de fosfato...
Palavras-chave: Acidos orgánicos; Fosfatasas; Solubilización de fosfato; Inmunodetección; Roca fosfórica; Bacterias solubilizadoras de fosfato; Enfófitas; Organic acids; Phosphatases; Phosphate solubilization; Immunodetection; Rock phosphate; Phosphate solubilizing; Bacteria; Endophyte; Doctorado; Edafología.
Ano: 2010
URL: http://hdl.handle.net/10521/245

Composição química e qualidade microbiológica de silagens ácidas de vísceras de surubim (Pseudoplatystoma spp.) preparadas com diferentes proporções de ácidos fórmico e cítrico.
Provedor de dados: 14
Autores: HISANO, H.; BORGHESI, R.
bitstream/item/145321/1/BP722015-final.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Residue; Organic acids; By-product.; Ácido Orgânico; Impacto Ambiental; Resíduo Orgânico; Aquicultura.; Environmental impact.
Ano: 2015
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1048642

Screening of Lactobacillus spp. for the prevention of Pseudomonas aeruginosa pulmonary infections
Provedor de dados: 5
Autores: Alexandre, Youenn; Le Berre, Rozenn; Barbier, Georges; Le Blay, Gwenaelle.
Background: Pseudomonas aeruginosa is an opportunistic pathogen that significantly increases morbidity and mortality in nosocomial infections and cystic fibrosis patients. Its pathogenicity especially relies on the production of virulence factors or resistances to many antibiotics. Since multiplication of antibiotic resistance can lead to therapeutic impasses, it becomes necessary to develop new tools for fighting P. aeruginosa infections. The use of probiotics is one of the ways currently being explored. Probiotics are microorganisms that exert a positive effect on the host's health and some of them are known to possess antibacterial activities. Since most of their effects have been shown in the digestive tract, experimental data compatible with the...
Tipo: Text
Palavras-chave: Pseudomonas aeruginosa; Lactobacillus; Probiotics; Organic acids; Biofilm formation; Elastolytic activity.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00197/30842/29211.pdf

Characterization of grain mold resistant sorghum germplasm accessions for physio-morphological traits
Provedor de dados: 30
Autores: Thakur, R.P.
Palavras-chave: Grain; Germplasm; Fungi; Sorghum; Agronomic characters; Hybrids; Breeds (animals); Organic acids; Genetic resistance; Cereals.
Ano: 2008
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3143

False positives for tannin sorghum in non-tannin sorghum using the bleach test
Provedor de dados: 30
Autores: Awika, J. McDonough, C.M.
Palavras-chave: Organic acids; Pigments; Sorghum; Phenols; Anthocyanins; Aromatic compounds; Sampling; Grain; Environmental degradation; Environmental factors.
Ano: 2005
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3240

Ten Myths about Tannins in Sorghums
Provedor de dados: 30
Autores: Rooney, L.
Palavras-chave: Organic acids; Sorghum; Antioxidants; Pigments; Phenols; Linseed; Aromatic compounds; HPLC; Bakery products; Polymers.
Ano: 2005
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3264

Utilization of sorghum and millets
Provedor de dados: 30
Autores: M.I.
Palavras-chave: Sorghum; Flours; Husking; Grain; Organic acids; Millets; Cereals; Starch; Bakery products.
Ano: 1992
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4171

Host Selection Behavior of Helicoverpa armigera
Provedor de dados: 30
Palavras-chave: Pigeonpeas; Chickpeas; Allelochemicals; Genotypes; Integrated pest management; Animal developmental stages; Antibiosis; Semiochemicals; Grain legumes; Organic acids.
Ano: 1990
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4081

Forage yield and quality in pigeonpea germplasm lines
Provedor de dados: 30
Autores: Alexander, G.
Palavras-chave: Pigeonpeas; Organic acids; Animal nutrition; Heritability; Nitrogen; Germplasm; Wet season; Dry matter; Organic matter; Biological phenomena.
Ano: 2007
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3284

Uses of Sorghum and Millets
Provedor de dados: 30
Palavras-chave: Sorghum; Flours; Millets; Grain; Husking; Organic acids; Alcohols; Cereals; Starch; Wheats.
Ano: 1988
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4055

Calcium anacardate as growth promoter for piglets at the nursery phase
Provedor de dados: 86
Autores: Matos,Amanda Veruska Silva de; Watanabe,Pedro Henrique; Freitas,Ednardo Rodrigues; Santos,Kassia Moreira; Araújo,Lina Raquel Santos; Nepomuceno,Rafael Carlos; Vieira,Alini Mari; Vieira,Eloisa Helena Mendes.
Abstract: The objective of this work was to evaluate the effects of the dietary inclusion of calcium anacardate on the performance, diarrhea incidence, blood parameters, intestinal morphometry, and pH of gastrointestinal contents in piglets from 21 to 42 days of age. Sixty weaned Topigs piglets, with initial weight of 6.049±0.311 kg, were distributed in the following treatments: diet with or without antibiotic growth promoter (zinc bacitracin) and diets supplemented with increasing levels of calcium anacardate (0.4, 0.8, and 1.2%), with six replicates and two animals per experimental unit. No differences in performance (21 to 42 days of age), blood parameters, and villus height:crypt depth ratio were found between piglets fed diets containing calcium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anacardic acid; Intestinal morphometry; Organic acids; Phenolic compounds; Post-weaning; Zinc bacitracin.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001201253

Salmonella fecal excretion control in broiler chickens by organic acids and essential oils blend feed added
Provedor de dados: 89
Autores: Borsoi,A; Santos,LR; Diniz,GS; C. Salle,CTP; Moraes,HLS; Nascimento,VP.
Salmonellosis is an important disease with economic impact as it may affect animal performance and may result in foodborne disease in humans through the eggs and carcass contamination. Regarding the Salmonella control, it is possible to decrease its fecal excretion and the contamination of chicken carcasses by adding organic acids to the feed or drinking water at appropriate times. The aim of this study was to test a blend of organic acids and essential oils in broilers challenged with Salmonella Enteritidis (SE), and to verify the fecal excretion of Salmonella. Sixty broilers were placed in four groups. One group was the negative control. Another group was orally inoculated at 1 day-old with 10(5) CFU/mL of SE as a positive SE control. Two groups (T3 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chicks; Organic acids; Salmonella Enteritidis.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000100010

Nutrient balance of layers fed diets with different calcium levels and the inclusion of phytase and/or sodium butyrate
Provedor de dados: 89
Autores: Vieira,MM; Kessler,AM; Ribeiro,AML; Silva,ICM; Kunrath,MA.
In this study, Hisex Brown layers in lay were evaluated between 40 and 44 weeks of age to evaluate the inclusion of bacterial phytase (Ph) and sodium butyrate (SB) to diets containing different calcium levels (CaL). Performance, average egg weight and eggshell percentage, in addition to nutrient metabolizability and Ca and P balance were evaluated for 28 days. Birds were distributed according to a completely randomized experimental design with a 3x2x2 factorial arrangement, with three calcium levels (2.8, 3.3, 3.8%); the addition or not of phytase (500PhU/kg) and the addition or not of sodium butyrate (20mEq/kg), composing 12 treatments with eight replicates of one bird each. There was no additive effect of phytase or SB on the evaluated responses. Feed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterial phytase; Brown layers; Ca and P; Metabolizability; Organic acids.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000200011

Organic acids and/or compound with defined microorganisms to control Salmonella enterica serovar Enteritidis experimental infection in chickens
Provedor de dados: 89
Autores: Sterzo,EV; Paiva,JB; Mesquita,AL; Freitas Neto,OC; Berchieri Jr,A.
The association of human foodborne salmonellosis with poultry products enhanced the efforts to control Salmonella Enteritidis in poultry farms. Dietary organic acid supplementation is one of the measures currently used to reduce the presence of undesirable microorganisms. Another method to control enteric Salmonella in poultry is competitive exclusion using defined or undefined microorganisms products. Organic acids and microbiological methods to accelerate the development of the intestinal microbiota can be used individually or in combination. The present study evaluated the effect of dietary supplementation of an acidifier and of a defined multi-strain microbial mixture (Biomin® PoultryStar) via drinking water in the control of the intestinal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Competitive exclusion; Organic acids; Probiotic; Salmonella Enteritidis.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100010

Effect of acidified drinking water on the recovery of Salmonella enteritidis from broiler crops
Provedor de dados: 89
Autores: Avila,LAF de; Nascimento,VP do; Canal,CW; Salle,CTP; Moraes,HL de S.
Crop is a known source of Salmonella contamination during broiler carcass processing. The effect of drinking water acidification by lactic acid or citric acid or a combination of those with cupric sulfate and d-limonene in the reduction of Salmonella Enteritidis (SE) recovered from the crop of broilers was evaluated. Treatments were administered during 8 hours of preslaughter fasting period (Experiments I and II) and during the last 32 hours of preslaughter (Experiment III). It was observed that acidification reduced water intake when treatments began at preslaughter feed withdrawal, and affected the possible reducing effect of these acids on SE recovering (Experiments I and II). Water intake during preslaughter feed withdrawal was not affected when...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Citric acid; Crop; Cupric sulphate; D-Limonene; Lactic acid; Organic acids; Pre-slaughter feed withdrawal; Salmonella enteritidis.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000300005

Is Composting a Route to Solubilize Low-Grade Phosphate Rocks and Improve MAP-Based Composts?
Provedor de dados: 90
Autores: Maluf,Henrique José Guimarães Moreira; Silva,Carlos Alberto; Morais,Everton Geraldo de; Paula,Leonardo Henrique Duarte de.
ABSTRACT: In alkalinized and Ca-rich composts, solubilization of apatite from phosphate rocks (PRs) is not guaranteed; however, chelating agents and humified substances produced during composting may alter the soluble contents and P forms of monoammonium phosphate (MAP)-based composts. These effects may depend on the proportions of organic wastes and P source used in the compost piles. The aim of this study was to evaluate the effect of composting chicken manure, coffee husk, and Araxá PR, Bayóvar PR, or MAP in different proportions on the organic matter decomposition, total N, Ca contents, and soluble P fractions in the composts. The treatments consisted of a 3 × 4 × 2 factorial, through the combination of three P sources [Araxá PR, Bayóvar PR, and MAP],...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apatite; Chicken manure; Coffee husk; Organic acids; NPK fertilizer equivalent.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100507

Plant availability of trace elements in sewage sludge-treated soils: methodology¹
Provedor de dados: 90
Autores: Marchi,Giuliano; Guilherme,Luiz Roberto Guimarães; Chang,Andrew C.
Synthetic root exudates were formulated based on the organic acid composition of root exudates derived from the rhizosphere of aseptically grown corn plants, pH of the rhizosphere, and the background chemical matrices of the soil solutions. The synthetic root exudates, which mimic the chemical conditions of the rhizosphere environment where soil-borne metals are dissolved and absorbed by plants, were used to extract metals from sewage-sludge treated soils 16 successive times. The concentrations of Zn, Cd, Ni, Cr, and Cu of the sludge-treated soil were 71.74, 0.21, 15.90, 58.12, and 37.44 mg kg-1, respectively. The composition of synthetic root exudates consisted of acetic, butyric, glutaric, lactic, maleic, propionic, pyruvic, succinic, tartaric, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heavy metals; Soil extractant; Organic acids; Rhizosphere; Root exudates.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000400039

Competitive sorption and desorption of phosphate and citrate in clayey and sandy loam soils
Provedor de dados: 90
Autores: Souza,Matheus Fonseca de; Soares,Emanuelle Mercês Barros; Silva,Ivo Ribeiro da; Novais,Roberto Ferreira; Silva,Mailson Félix de Oliveira.
The increase of organic acids in soils can reduce phosphorus sorption. The objective of the study was to evaluate the competitive sorption of P and citrate in clayey and sandy loam soils, using a stirred-flow system. Three experiments were performed with soil samples (0-20 cm layer) of clayey (RYL-cl) and sandy loam (RYL-sl) Red Yellow Latosols (Oxisols). In the first study, the treatments were arranged in a 2 × 5 factorial design, with two soil types and five combinations of phosphorus and citrate application (only P; P + citrate; and citrate applied 7, 22, 52 min before P); in the second, the treatments were arranged in a 2 × 2 factorial design, corresponding to two soils and two forms of P and citrate application (only citrate and citrate + P); and in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Incubation time; Latosol; Organic acids; Stirred-flow.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000400011

Effect of dietary supplementation with butyrate and probiotic on the survival of Pacific white shrimp after challenge with Vibrio alginolyticus
Provedor de dados: 96
Autores: Bolívar Ramírez,Norha Constanza; Rodrigues,Marysol Santos; Guimarães,Ariane Martins; Guertler,Cristhiane; Rosa,Juliana Ribeiro; Seiffert,Walter Quadros; Andreatta,Edemar Roberto; Vieira,Felipe do Nascimento.
ABSTRACT This study evaluated the performance, immunology, and survival of the Pacific white shrimp Litopenaeus vannamei to experimental challenge to Vibrio alginolyticus based on the use of the probiotic Lactobacillus plantarum and the combined use of probiotic and butyrate. Four different diets resulted from the addition of additives: butyrate, probiotic, butyrate + probiotic, and control (no additives). The attractiveness of the diets was assessed by the percentage of positive choices and rejections, using a dual-choice Y-maze format aquarium. The shrimps were fed during four weeks and performance parameters, intestinal microbiota, and immunological parameters were all evaluated. Subsequently, the shrimps were challenged with V. alginolyticus and after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal production; Lactic acid; Organic acids.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000600471

Evaluation of whey fermented by Enterococcus faecium in consortium with Veilonella parvula in ruminant feeding
Provedor de dados: 96
Autores: Oliveira,Juliana Silva de; Queiroz,Augusto César de; Mantovani,Hilário Cuquetto; Bayão,Geraldo Fábio Viana; Detmann,Edenio; Santos,Edson Mauro; Silva,Thiago Carvalho da.
The objective of this study was to evaluate the whey fermented by Enterococcus faecium in consortium with Veilonella parvula on the in vitro growth of ruminal bacteria and as a supplement in the cattle diet. In the in vitro experiment, a randomized design, with the following combinations was used: ruminal bacteria; ruminal bacteria and inactive whey; ruminal bacteria and active whey; and active whey. In the in vivo experiment, five fistulated Zebu Holstein-Zebu crossbred heifers were distributed in a 5 × 5 Latin square. Supplements were formulated without the addition of whey, with the addition of two levels of unfermented whey (2.5 and 5 L/day) or two levels of fermented whey (2.5 and 5 L/day). A positive effect of the whey fermentation was detected on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactate; Organic acids; Propionic acid; Rumen.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000100025

Accuracy, precision and robustness of different methods to obtain samples from silages in fermentation studies
Provedor de dados: 96
Autores: Gomes,Rodrigo da Costa; Meyer,Paula Marques; Castro,Ari Luiz de; Saran Netto,Arlindo; Rodrigues,Paulo Henrique Mazza.
The objective of this study was to evaluate accuracy, precision and robustness of two methods to obtain silage samples, in comparison with extraction of liquor by manual screw-press. Wet brewery residue alone or combined with soybean hulls and citrus pulp were ensiled in laboratory silos. Liquor was extracted by a manual screw-press and a 2-mL aliquot was fixed with 0.4 mL formic acid. Two 10-g silage samples from each silo were diluted in 20 mL deionized water or 17% formic acid solution (alternative methods). Aliquots obtained by the three methods were used to determine the silage contents of fermentation end-products. The accuracy of the alternative methods was evaluated by comparing mean bias of estimates obtained by manual screw-press and by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bias; Ethanol; Formic acid; Organic acids; Wet brewery residue.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000600008

Influence of intraruminal infusion of propionic acid and forage to concentrate levels on intake, digestibility and rumen characteristics in young bulls
Provedor de dados: 96
Autores: Ribeiro,Marinaldo Divino; Pereira,José Carlos; Queiroz,Augusto César de; Bettero,Vitor Pereira; Mantovani,Hilário Cuquetto; Silva,Cássio José da.
This study aimed to evaluate the effect of intraruminal infusion of propionic acid (RPA) associated to two (80:20 and 60:40) forage:concentrate ratios (FCR), for young bulls. Four Holstein × Zebu crossbred young bulls with average age of 7 months and 160 kg of body weight (BW) were distributed to a 4 × 4 Latin square design. A total mixed ration, isonitrogenous diets, was ad libitum fed to animals. The propionic acid was obtained by fermentation of reconstituted milk whey by the consortium of bacteria Enterococcus sp. and Veillonella sp.. Daily and along with the supply of solid feeds, 2 L of the compound containing propionic acid were intrainfused in the rumen. There was no RPA × FCR interaction for the intake of nutrients, except for total digestible...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteria ruminal; Digestibility; Feeding; Milk whey; Organic acids.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000500023

Mixed sugarcane and elephant grass silages with or without bacterial inoculant
Provedor de dados: 96
Autores: Cavali,Jucilene; Pereira,Odilon Gomes; Valadares Filho,Sebastião de Campos; Porto,Marlos Oliveira; Fernandes,Francisco Eden Paiva; Garcia,Rasmo.
The effects of different ratios of sugarcane and elephant grass (0:100, 25:75, 50:50, 75:25 and 100:0% of the natural basis) were assessed on the chemical composition and losses in silages treated with a bacterial inoculant, using laboratory silos. A 2 × 5 factorial arrangement (with and without inoculant and five elephant grass ratios) in a randomized blocks design with three replications was used. Interaction was observed in the sugarcane and elephant grass ratio × bacterial inoculant for crude protein (CP) and pH. The other variables were influenced only by the increasing proportions of elephant grass. The contents of dry matter, neutral detergent fiber corrected for ashes and protein, acid detergent fiber, insoluble protein in acid detergent fiber,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Effluent; Ethanol; Nutritional value; Organic acids; Soluble sugars.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000300003

Production and quality of the silage of corn intercropped with Paiaguas palisadegrass in different forage systems and maturity stages
Provedor de dados: 96
Autores: Souza,Wender Ferreira de; Costa,Kátia Aparecida de Pinho; Guarnieri,Analu; Severiano,Eduardo da Costa; Silva,Jessika Torres da; Teixeira,Daniel Augusto Alves; Oliveira,Suelen Soares; Dias,Mariana Borges de Castro.
ABSTRACT The objective of this study was to evaluate dry matter production, fermentative parameters, and nutritional value of the silage of corn intercropped with Paiaguas palisadegrass in different forage systems and maturity stages, in the off-season. The experiment was carried out in a randomized block design, with four replications, in a 5×3 factorial arrangement consisting of five forage systems: corn monocropped; Paiaguas palisadegrass monocropped; corn intercropped with Paiaguas palisadegrass in the row, inter-row, and oversown; and three corn maturity stages (milky, soft dough, and hard dough with 80, 90, and 110 days after sowing, respectively). The results showed that the silage of corn intercropped with Paiaguas palisadegrass in the row and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachiaria brizantha; Crop-livestock integration; Forage conservation; Organic acids; Zea mays.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100401

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

Mixture of formic and propionic acid as additives in broiler feeds
Provedor de dados: 63
Autores: Vale,Marcos Martinez do; Menten,José Fernando Machado; Morais,Sônia Cristina Daróz de; Brainer,Mônica Maria de Almeida.
The presence of Salmonella species in feeds and ingredients is an important source of salmonella contamination for animals. Organic acid mixtures have shown to be an effective alternative to eliminate salmonellas in feeds and chickens. In the present study, the performance of male broiler chickens receiving levels (0, 0.25, 0.50, 1.0 and 2.0%) of a mixture of organic acids (OAs) (70% formic acid and 30% propionic acid) in the diet was evaluated from the age one to 42 days, in a completely randomized experimental design with five treatments and five replications of 40 birds each. Diets were based on corn, soybean meal and soybean oil. Body weight, weight gain and feed intake from the age one to 21 days were affected by the treatments; 2% OAs in the diet...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella; Chicken; Organic acids; Food safety.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000400004

Phytoextraction: a review on enhanced metal availability and plant accumulation
Provedor de dados: 63
Autores: Nascimento,Clístenes Williams Araújo do; Xing,Baoshan.
Phytoextraction has emerged as a novel approach to clean up metal-polluted soils in which plants are used to transfer toxic metals from soils to shoots. This review provides a synthesis of current knowledge on phytoextraction of metals from soils and their accumulation in plants. The objective is to integrate soil-related (root exudates and chemical amendments) and biological advances to suggest research needs and future directions. As far as can be deduced from the literature, it will be some time before phytoextraction may be established as a commercial technology. For chemically-assisted phytoextraction, research has not shown easily biodegradable compounds to overcome the risks associated with the use of EDTA for poorly available metals in soils. On...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: EDTA; Phytoremediation; Heavy metals; Organic acids.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000300014

Phytoextraction and fractionation of heavy metals in soil after multiple applications of natural chelants
Provedor de dados: 63
Autores: Melo,Évio Eduardo Chaves de; Nascimento,Clístenes Williams Araújo do; Accioly,Adriana Maria de Aguiar; Santos,Ana Cristiane Queiroz.
Chelate-assisted phytoextraction of heavy metals is a promising approach to clean up polluted soils. However, the most successful chelants tested so far are synthetic agents that barely degrade in soil, increasing the metal leaching risks. Natural organic acids have been proposed to enhance phytoextraction due to their higher biodegradability, but they can also be a drawback for efficient phytoextraction. This work was carried out to compare the effectiveness of multiple applications of citric and gallic acids on the availability in soil and accumulation of Cd, Pb, Cu, and Zn by velvet bean (Stizolobium aterrimum) plants. The organic acids were added as follows: 5 mmol kg-1 in the 28th cultivation day; two doses of 5 mmol kg-1 at the 28th and 31st day; and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phytoremediation; Soil pollution; Soil remediation; Organic acids.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000100009

Effect of cutting and storage temperature on Packham's Triumph pears (Pyrus communis L.)
Provedor de dados: 109
Autores: Obando-Ulloa,Javier M.; Oyarzún,Alejandra; Machuca,Alejandra; Luchsinger,Luis; Peña-Neira,Álvaro; Escalona,Víctor H.
Abstract For the minimally processed (MP) fruit, the cutting type and temperature are the main factors in order to maintain good quality and appearance. The objective of this work was to evaluate the effects of cutting type and storage on the metabolic activity, color, firmness, aroma profile and, organic acid and sugar content of MP pears (Pyrus communis L. cv. Packham's Triumph). Whole fruits were washed, peeled and cut in wedges or dice. Then, the pieces were packaged in plastic containers and stored 8 days at 5 or 8 °C. The cutting type and storage temperature had an important effect on the physiological parameters, color, firmness and organic acid and sugar content. However, the aroma volatile content was reduced independently of the cutting type and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aroma; Browning; Firmness; Organic acids; Sugar.
Ano: 2018
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100039

Fermentation characteristics of elephant grass silages with macaúba cake
Provedor de dados: 2
Autores: Guimarães, Cíntia Gonçalves; Bonfá, Caroline Salezzi; Evangelista, Antônio Ricardo; Santos, Alexandre Soares dos; Pantoja, Lílian de Araújo; Castro, Gustavo Henrique de Frias.
 The elephant grass presents problems during the fermentation of the ensiled material, being necessary use of additives. This study aimed to evaluate the population of yeast and filamentous fungi, enterobacterias, contents of acetic and butyric acids and ethanol production, in elephant grass silages added with different levels of macaúba cake at opening times. This was a 3 x 6 factorial completely randomized experimental design, with three inclusion levels of the macaúba cake (0, 10 and 20%) and six opening times (1, 5, 10, 20, 40 and 60 days after ensiling), with four replications. For all the studied variables, there was a difference in the interaction among levels and times, and an increasing linear behavior only for the contents of acetic acid, for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enterobacterias; Filamentous fungi; Opening times; Organic acids; Yeast fungi.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/42523

Effects of easy soluble carbohydrate and bacterial inoculant supplementations on silage quality of frosted maize
Provedor de dados: 2
Autores: Konca, Yusuf; Beyzi, Selma Buyukkilic; Paffetti, Maria Asuncion Gallardo; Ulger, Ismail; Sohel, Mohammad Mahmodul Hasan.
The present experiments were conducted to assess the effects of barley, Lactobacillus bacteria and lactic acid bacteria (LAB) and enzyme mixture supplementations on chemical composition and some quality parameters of naturally frosted maize silage. The treatments were as follows; T1: Control (no supplementation, C); T2: barley 20 g kg-1, B20; T3: barley 40 g kg-1, B40; T4: 1.5 g ton-1, a mixture of LAB; and T5: 2 g ton1, a mixture LAB+enzyme, LEN. Barley supplementation to frosted maize increased dry matter (DM) (p &lt; 0.01). The pH value was higher in LAB group (p &lt; 0.01). Treatments supplemented LAB and LEN significantly reduced crude protein contents (p &lt; 0.001). Lactic acid contents decreased in all treatments as compared to control group and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal Science  Feed Science cold; Plant killing; Silage additives; Organic acids; Fleig point.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/39513

Corn grain processing improves chemical composition and fermentative profile of rehydrated silage
Provedor de dados: 2
Autores: Silva, Marlon Richard Hilário da; Jobim, Clóves Cabreira; Neumann, Mikael; Osmari, Milene Puntel.
This study evaluated the effects of the rehydration and ensiling of corn grain with two geometric mean diameters (GMD) of 0.55 and 1.83 mm obtained by the diameter of the sieved used on the fermentation characteristics and chemical composition of the silage. The experimental design was completely randomized with two treatments and six replications, as follows: rehydrated fine-corn grain silage (RFS) and rehydrated coarse-corn grain silage (RCS). Ground corn was rehydrated with water to achieve moisture levels close to 350 g kg-1. There was no effect on the dry matter recovery, though the recovery rate was high, with values greater than 97% in both silages. The particle size influenced the fiber content, with lower values in the RFS. The acetic and lactic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organic acids; Particle size; Processing grain; Storage losses.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/42564

Organic acids, sugars, vitamin C content and some pomological characteristics of eleven hawthorn species (Crataegus spp.) from Turkey
Provedor de dados: 48
Autores: Gundogdu,Muttalip; Ozrenk,Koray; Ercisli,Sezai; Kan,Tuncay; Kodad,Ossama; Hegedus,Attila.
BACKGROUND: The Hawthorn (Crateagus sp.) mostly occurs around the temperate region of the world with a high number of species, producing a fruit with numerous beneficial effects for human health. The aim of the study was to determine organic acid and sugar contents in the fruit of a number of hawthorn species grown in Erzincan province of Turkey. RESULTS: Citric acid was the predominant organic acid in all hawthorn species and C. pseudoheterophylla had the highest citric acid content (23.688 g/100 g). There were not statistically significant differences among hawthorn species (except C. atrosanguinea Pojark) in terms of fumaric acid content. C. pontica C.Koch had a higher content of vitamin C (9.418 mg/100 g) compared to other species. Fructose was the...
Tipo: Journal article
Palavras-chave: Crataegus; Diversity; Fruit characteristics; Organic acids.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100021

Evaluation of microorganisms with sulfidogenic metabolic potential under anaerobic conditions
Provedor de dados: 52
Autores: Sakamoto,Isabel Kimiko; Maintinguer,Sandra Imaculada; Hirasawa,Julia Sumiko; Adorno,Maria Angela Tallarico; Varesche,Maria Bernadete Amâncio.
The aim of this work was to identify groups of microorganisms that are capable of degrading organic matter utilizing sulfate as an electron acceptor. The assay applied for this purpose consisted of running batch reactors and monitoring lactate consumption, sulfate reduction and sulfide production. A portion of the lactate added to the batch reactors was consumed, and the remainder was converted into acetic, propionic and butyric acid after 111 hours of operation These results indicate the presence of sulfate-reducing bacteria (SRB) catalyzing both complete and incomplete oxidation of organic substrates. The sulfate removal efficiency was 49.5% after 1335 hours of operation under an initial sulfate concentration of 1123 mg/L. The SRB concentrations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sulfate-reducing bacteria; Lactate; Most Probable Number; Organic acids.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000500018

Prevention of Salmonella infection by contact using intestinal flora of adult birds and/or a mixture of organic acids
Provedor de dados: 58
Autores: Oliveira,Gláucia Helaine de; Berchieri Junior,Angelo; Barrow,Paul A.
This study was carried out to assess the ability of competitive exclusion and a mixture of organic acids to prevent Salmonella infection by contact between newly hatched chicks. A bird infected with Salmonella was placed in a box containing non-infected birds, previously treated with a broth culture of faeces of adult birds (CE) and/or a mixture of organic acids. The number of Salmonella organisms in the caeca of the contact birds was estimated at 4 and 8 days post-challenge. The birds were infected with Salmonella Typhimurium, Salmonella Enteritidis (both repeated 5 times), Salmonella Agona and Salmonella Infantis (3 repetitions). The same approach was used to test the mixture of organic acids alone. In this case the birds received feed containing 0.8% of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella; Competitive exclusion; Organic acids; By-contact infection; Poultry.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000200011

Bioactive compounds and quality characteristics of five apples cultivars
Provedor de dados: 65
Autores: Zucoloto,Moises; Ku,Kang-Mo; Kushad,Mosbah M.; Sawwan,Jamal.
The aim of this study was to evaluate bioactive compounds in five apple cultivars and to analyze correlation of their quality characteristics with concentration of bioactive compounds. Phenolic compounds measurements were made in a spectrophotometer compared to a standard curve of gallic acid and expressed as gallic acid equivalent (GAE) per 100g of dry weight. Sugar and organics acids in five cultivars were quantified using high-performance liquid chromatograph (HPLC). Antioxidant activities were evaluated using three complementary tests 2,2-diphenyl-1-picrylhidrazyl (DPPH) scavenging activity, ferric reducing antioxidant power (FRAP), and 2,2'-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) (ABTS). 'GoldRush' had the highest total phenolic compared to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mallus domestica; Organic acids; Sugar; Antioxidant capacity; HPLC/DAD.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001101972

Alternatives to antibiotics in diets of weaned piglets
Provedor de dados: 65
Autores: Ferreira,Soraia Viana; Barbosa,Lívia Maria dos Reis; Soares,Marcos Henrique; Marcolla,Camila Schultz; Holanda,Débora Muratori; Saraiva,Alysson.
ABSTRACT: This experiment was conducted to evaluate the effect of growth promoter additives an alternative to antibiotics on performance, intestinal morphology and on microbiota of 21-to-35-day-old piglets. A total of 160 commercial crossbred piglets (males and females) with initial weight of 6.10±0.709kg were allotted in a completely randomized design with five treatments: Basal diet - Negative Control (NC); Basal diet + antibiotic (PC); Basal diet + mannanoligosaccharides (MOS); Basal diet + organic acids (OA), Basal diet + mannanoligosacharides + organic acids (MOS+OA), eight replicates and four piglets per experimental unit. The inclusion of additives in the diets had no effect (P&gt;0.05) on the final average weight of piglets. Similarly, no effects...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additives; Growth promoters; Organic acids; Prebiotics.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001200651

Chemical fractionation of carbohydrate and protein composition of corn silages fertilized with increasing doses of nitrogen
Provedor de dados: 65
Autores: Neumann,Mikael; Nörnberg,José Laerte; Leão,Guilherme Fernando Mattos; Horst,Egon Henrique; Figueira,Danúbia Nogueira.
ABSTRACT: The use of nitrogen fertilizers in corn crops for silage can improve both production and, theoretically, nutritional quality, especially carbohydrate and protein fractions, thereby optimizing animal production. Thus, the aim of this study was to evaluate the effect of increasing levels of nitrogen fertilization in carbohydrate and protein fractionation on the resulting corn silage (Zea mays L.). Nitrogen fertilization was carried out in the urea form (45-00-00) in V5 stage, at the following doses: T1: 0kg N ha-1; T2: 45kg N ha-1; T3: 90kg N ha-1; and T4: 135kg N ha-1. Crops were harvested at R4 stage and submitted to ensiling in experimental PVC silos. The chemical composition of the resulting silage was evaluated after silo opening. There was no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Starch; Organic acids; C fraction; PH; Solubility.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500251

Digestibility, fermentation and microbiological characteristics of Calotropis procera silage with different quantities of grape pomace
Provedor de dados: 64
Autores: Belém,Clérison dos Santos; Souza,Anderson Miranda de; Lima,Patrícia Rodrigues de; Carvalho,Francisco Allan Leandro de; Queiroz,Mário Adriano Ávila; Costa,Mateus Matiuzzi da.
ABSTRACT Preserving forage plants adapted to a semi-arid climate as silage may minimize the animal feed deficit during drought. The objective of this study was to evaluate the effects of different quantities of grape pomace added to Calotropis procera silage on its fermentation, in vitro digestibility, total digestible nutrients and microbiology. A completely randomized experimental design was used with four treatments (0, 10, 20 and 40% fresh matter) and four replicates. The silos were opened after 90 days of ensilage, and the soluble carbohydrate, ethanol, organic acid and ammoniacal nitrogen concentrations; pH; fermentation loss; dry matter (DM) recovery; DM density, and microbial populations were determined. The pH (3.96-3.87) was adequate for ensiling...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation losses; Microorganisms; Organic acids.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000600698

Antioxidant activity, anthocyanins and organic acids content of grape juices produced in Southwest of Minas Gerais, Brazil
Provedor de dados: 64
Autores: Vilas Boas,Ana Carolina; Henrique,Paôla de Castro; Lima,Luiz Carlos de Oliveira; Decarlos Neto,Antônio.
Phenolic compounds and anthocyanins content in grape juices varies in the cultivar, ripening and climate characteristics. The objective of this work was to characterize and evaluate antioxidant activity of grape juices produced in southwestern Minas Gerais. Grapes were harvested, sanitized and the juices from cultivars 'Bordô', 'Isabel Precoce', 'BRS Violeta' and 'BRS Rúbea' were produced in artisanal equipment by steam extraction and stored for 120 days. The following analyzes were performed during storage: color (L *), pH, soluble solids, titratable acidity, anthocyanins, antioxidant activity (DPPH and β-caroteno/linoleic acid), total phenolics, vitamin C and organic acids. Among the cultivars evaluated, the consumption of grape juice from cultivar 'BRS...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis labrusca; Phenolics; Vitamin C; Organic acids.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000500007