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Aerobic stability of sugar cane silages with a novel strain of Lactobacillus sp. isolated from sugar cane R. Bras. Zootec.
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
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Chemical and microbiological characteristics of sugar cane silages treated with microbial inoculants R. Bras. Zootec.
Ávila,Carla Luiza da Silva; Valeriano,Alexandre Rocha; Pinto,José Cardoso; Figueiredo,Henrique César Pereira; Rezende,Adauton Vilela de; Schwan,Rosane Freitas.
The aim of this research was to evaluate the effect of microbial additives containing heterofermentative or homofermentative bacteria on the chemical and microbiological characteristics of sugar cane (Saccharum spp) silages. Sugar cane was inoculated with Lactobacillus plantarum, L. paracasei, L. brevis or L. buchneri previously isolated from sugar cane silages or commercial inoculants containing L. buchneri or L. plantarum. Silages were produced in laboratory silos (10 × 60 cm PVC tubes) and evaluated 90 days after ensiling. A randomized complete design was used with eight treatments (seven inoculants and control - without inoculant) and three replications. The inoculation with bacteria affected lactic acid bacteria, yeast populations, volatile fatty...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acetic acid; Ethanol; Heterofermentative bacteria; Lactic acid; Lactobacillus; Yeasts.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000100004
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Effects of cigarette smoke condensate on the production and characterization of exopolysaccharides by Bifidobacterium Anais da ABC (AABC)
Hu,Jinqiang; Wei,Tao; Sun,Siwen; Zhao,Aijing; Xu,Chunping.
The aim of the study was to investigate the effect of cigarette smoke on the production and characterization of exopolysaccharides (EPSs) produced by Bifidobacterium. Cigarettes of Shanhua brand (nicotine: 1.1 mg, tar: 11 mg) were utilized to prepare a cigarette smoke condensate (CSC). The standard strain of Bifidobacterium animalis was cultured in MRS media under anaerobic addition of CSC. The results showed that CSC significantly decreased the growth of B. animalis as well as EPSs and acetic acid production. Furthermore, two EPSs fractions (Fr-I and Fr-II) were isolated and purified for chemical and molecular determination. By comparison with control, CSC was found to be of great impact on EPSs carbohydrate composition. The molecular weight mass of Fr-I...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Exopolysaccharides; Cigarette smoke condensate; Bifidobacterium; Acetic acid.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200997
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Evaluation of sugarcane laboratory ensiling and analysis techniques. Repositório Alice
PEDROSO, A. de F.; PEDROSO, A. M.; BARIONI JUNIOR, W.; SOUZA, G. B. de..
The objective was to evaluate the effects of laboratory-silo type and method of silage extract production, respectively, on sugarcane silage fermentation and recovery of fermentation products. Sugarcane was mechanically harvested and ensiled in three different types of laboratory silos (five replicates): 9.7 × 30 cm PVC tubes with tight lids, equipped or unequipped with Bunsen valves, and 20 L plastic buckets with tight lids and Bunsen valves. Three methods were used to produce silage extracts for pH, ethanol, acetic and lactic acids determination: extraction of silage juice by a hydraulic press and production of water extracts using a stomacher or a blender. Total dry matter loss (231 g/kg DM) was not affected by silo type. No interactions between silo...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Acetic acid; Ethanolc; Laboratory silo; Lactic acid; Silage extract; Sugarcane silage.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1005632
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Evaluation of sugarcane laboratory ensiling and analysis techniques R. Bras. Zootec.
Pedroso,André de Faria; Pedroso,Alexandre Mendonça; Barioni Júnior,Waldomiro; Souza,Gilberto Batista de.
The objective was to evaluate the effects of laboratory-silo type and method of silage extract production, respectively, on sugarcane silage fermentation and recovery of fermentation products. Sugarcane was mechanically harvested and ensiled in three different types of laboratory silos (five replicates): 9.7 × 30 cm PVC tubes with tight lids, equipped or unequipped with Bunsen valves, and 20 L plastic buckets with tight lids and Bunsen valves. Three methods were used to produce silage extracts for pH, ethanol, acetic and lactic acids determination: extraction of silage juice by a hydraulic press and production of water extracts using a stomacher or a blender. Total dry matter loss (231 g/kg DM) was not affected by silo type. No interactions between silo...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acetic acid; Ethanol; Laboratory silo; Lactic acid; Silage extract; Sugarcane silage.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000400169
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Fermentation and aerobic stability of corn silage inoculated with Lactobacillus buchneri R. Bras. Zootec.
Basso,Fernanda Carvalho; Bernardes,Thiago Fernandes; Roth,Anna Paula de Toledo Piza; Lodo,Bruno Nascimento; Berchielli,Telma Teresinha; Reis,Ricardo Andrade.
The characteristics of fermentation and aerobic stability were evaluated in corn silage inoculated with different doses of Lactobacillus buchneri. The whole corn plant (300 g/kg DM) was ensiled in quadruplicate laboratory silos (7L). L. buchneri 40788 was applied at 5×10(4), 1×10(5), 5×10(5) and 1×10(6) cfu/g of fresh forage. Silages with no additive were used as controls. After 130 d of ensiling, the silages were subjected to an aerobic stability evaluation for 12 days, in which chemical and microbiological parameters as well as the temperature of the silage were measured to determine the aerobic deterioration. The addition of L. buchneri resulted in increased acetic acid concentrations. The number of yeast colonies was low in all treated silages. The pH,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acetic acid; Mold; PH values; Yeasts.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000700032
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Inhibitory effect of acetic acid on bioconversion of xylose in xylitol by Candida guilliermondii in sugarcane bagasse hydrolysate BJM
Silva,Débora D.V.; Felipe,Maria G.A.; Mancilha,Ismael M.; Luchese,Rosa H.; Silva,Sílvio S..
Sugarcane bagasse hydrolysate (initial acetic acid concentration = 3.5g/L), was used as a fermentation medium for conversion of xylose into xylitol by the yeast Candida guilliermondii FTI 20037. Acetic acid (2.0g/L) was added to the medium at different times of fermentation, with the aim of evaluating its effects on the bioconversion process. The addition of acetic acid to the medium after 12h of fermentation resulted in the strongest inhibition of the yeast metabolism. In this case, the xylose consumption and cell growth were, respectively, 23.22 and 11.24% lower than when acid was added to the medium at the beginning of fermentation. As a consequence of the inhibitory effect, lower values of the xylitol yield (0.39g/g) and productivity (0.22g/L.h) were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Xylitol; Xylose; Acetic acid; Sugarcane bagasse hydrolysate.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000200014
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Mead production: comparison of different production scales (preliminary results) IPB - Escola Superior Agrária
Gomes, Teresa; Barradas, Carla; Dias, Teresa; Andrade, João Verdial; Morais, Jorge Sá; Ramalhosa, Elsa; Estevinho, Leticia M..
Mead production represents a possible economic alternative to honey producers that intend to obtain honey products with surplus value. From that the present work aims to study the influence of using different production scales on the quality of the final mead obtained and on the process performance. Increasing the production scale almost ten times (1.5 to 20 L), some differences were observed. Maximum specific growth rates equal to 0.045 and 0.038 h-1 were obtained for fermentations carried out at 1.5 and 20 L, respectively. The time course of glucose and glycerol were similar for both production scales. Nevertheless, slight differences at the end of the fermentations were observed for fructose and acetic acid. In relation to ethanol, a higher final...
Tipo: Article Palavras-chave: Mead; Production scales; Ethanol; Glucose; Fructose; Glycerol; Acetic acid.
Ano: 2010 URL: http://hdl.handle.net/10198/3680
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Microbial populations, fermentative profile and chemical composition of signalgrass silages at different regrowth ages R. Bras. Zootec.
Santos,E.M.; Pereira,O.G.; Garcia,R.; Ferreira,C.L.L.F.; Oliveira,J.S.; Silva,T.C.; Rosa,L.O..
Microbial populations, pH, ammonium nitrogen/total nitrogen (N-NH3) ratio, concentrations of lactic acid, acetic acid and butyric acid and the chemical composition of Brachiaria decumbens cv. Basiliski silages at different regrowth ages (30, 40, 50, 60 and 70 days) were evaluated by using 2-kg capacity laboratory silos. It was used a 5 × 6 factorial scheme (5 regrowth ages × 6 fermentation periods) in a complete random design, with three replicates. The fermentation periods were 1, 3, 7, 14, 28 and 56 days. Lactic acid bacteria populations were recorded in fresh forage varying from 3.93 (30 days of regrowth) to 5.51 (70 days of regrowth) log colony-forming units (cfu)/g forage. Maximum populations of these microorganisms were recorded in the silages on the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acetic acid; Butyric acid; Enterobacteria; Lactic acid; Lactic acid bacteria.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000400007
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Performance And Economic Viability Of Broiler Chickens Fed With Probiotic And Organic Acids In An Attempt To Replace Growth-Promoting Antibiotics Rev. Bras. Ciênc. Avic.
Araujo,RGAC; Polycarpo,GV; Barbieri,A; Silva,KM; Ventura,G; Polycarpo,VCC.
ABSTRACT The aim of this study was to evaluate diets supplemented with probiotic (Bacillus amyloliquefaciens) and organic acids (lactic, acetic and butyric acid) in attempt to replace the antibiotics and anticoccidial (avilamycin + sodium monensin) growth promoters on performance and economic viability of broilers challenged by Eimeria acervulina, E. maxima and E. tenella. A total of 900 male Cobb® chickens, with a mean weight of 39.90g, were distributed in a completely randomized design in a 2 × 2 + 1 factorial arrangement: supplementation or not of probiotic and organic acids and a treatment with inclusion of antibiotics, comprising five treatments with six replicates. For the studied performance variables, there was no effect of the isolated additives...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acetic acid; Avilamycin; Butyric acid; Lactic acid; Monensin sodium.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200304
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Possibility of using apple pomaces in the process of propionic-acetic fermentation Electron. J. Biotechnol.
Piwowarek,Kamil; Lipińska,Edyta; Hać-Szymańczuk,Elżbieta.
Background: In 2014, apple production in EU countries amounted to 11.8 million tonnes. A constant increase in the production of these fruits will lead to the accumulation of thousands of tonnes of apple pomace (production waste). The amount of industrial apples is the highest - their proportiononthe market is estimated at 50-60%, of which over 95% is processed into juice. The proportion of pomace in the traditional pressing method accounts for 20% offruits used. Results: Analysis of the growth dynamics of wild strain Propionibacterium freudenreichii T82 in micro-cultures using different carbon sources showed that the highest bacterial growth occurs in an environment with fructose and the most intense biosynthesis of metabolites was found in medium...
Tipo: Journal article Palavras-chave: Acetic acid; By-products; Carbon sources; Propionibacterium; Propionic acid; Waste materials.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000500001
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PRODUCTION OF ginger vinegar Ciência e Agrotecnologia
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
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Sanitizing action of triple-strength vinegar against Escherichia coli on lettuce Horticultura Brasileira
Souza,Giovanna C; Spinosa,Wilma A; Oliveira,Tereza CRM.
ABSTRACT Vegetable sanitization protocols recommend the use of chlorine, which has adverse effects on the environment and carcinogenic effects on humans. Acetic acid is an interesting alternative to chlorine because it possesses no risk to human health and is widely available in the form of vinegar. This study aimed to evaluate the sanitizing action of vinegar, 130 g L-1 total titratable acidity expressed as acetic acid, on lettuce. Vinegar was chosen because it is a low-cost product widely available in the Brazilian market. The minimum inhibitory concentration and minimum bactericidal concentration of vinegar against Escherichia coli were 2.5 and 15 g L-1 total acidity, respectively. Lettuce leaves artificially contaminated with E. coli or naturally...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lactuca sativa; Acetic acid; Sanitization.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300414
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Use of anaerobic cecal microflora, lactose and acetic acid for the protection of broiler chicks against experimental infection with Salmonella Typhimurium and Salmonella enteritidis BJM
Andreatti Filho,Raphael Lucio; Silva,Edir Nepomuceno da; Ribeiro,Aldemir Reginato; Kondo,Nancy; Curi,Paulo Roberto.
The effects of treatment with anaerobic cecal microflora (ACM) and/or lactose and/or acetic acid on systemic and digestive tract of broiler chicks infection with Salmonella Typhimurium and S. Enteritidis were studied. ACM was used without previous bacterial identification. Treatment with ACM contributed to the resistance of broiler chicks to infection with Salmonella spp. The infections were more persistent in the cecum, rectum and crops in decreasing order of intensity. The infections were also self-limiting since treated and control lots presented similar infection rates at the end of the experiments. Alone or in combination with lactose, ACM reduced the colonization of the digestive tract of broiler chicks by S. Typhimurium and S. Enteritidis. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Salmonella Typhimurium; S. Enteritidis; Anaerobic cecal microflora; Competitive exclusion; Lactose; Acetic acid; Broiler chicks.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000200009
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