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| Registros recuperados: 75 | |
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| Hernández Cadena, Javier. |
| La melaza de caña de azúcar en el mercado internacional se comercializaba principalmente para la alimentación animal, actualmente tiene un mayor uso en la industria de la fermentación alcohólica y debido a su alto costo se ha venido limitado en la ganadería. Con el objetivo de establecer el nivel óptimo de melaza en un aditivo biológicamente activo (Vitafert), se estudió en diseño completamente al azar con arreglo factorial 3 niveles de melaza (5, 10 y 15%) y 8 tiempos de fermentación líquida (0, 1, 2, 3, 6, 9, 15 y 30 día), con 3 repeticiones por tratamientos para las variables bromatológicas y fermentativas. Para las variables microbiológicas se utilizó un diseño completamente al azar con 3 tratamientos (niveles de melaza) y 8 repeticiones por... |
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Palavras-chave: Melaza; Yoghurt; Lactobacilos; Levaduras; Vitafert; Probióticos; Molasses; Yogurt; Lactobacillus; Yeast; Probiotics; Maestría; Producción Agroalimentaria en el Trópico. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/345 |
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| Reséndiz Hernández, Miriam. |
| El objetivo de este estudio fue evaluar el efecto de dos fuentes orgánicas queladas comerciales, Cr-levadura y Se-levadura, y de Saccharomyces cerevisiae (SC), en la digestibilidad in situ de la MS, FDN, FDA y PC; pH, AGV y N-NH3 en el rumen; consumo de MS, ganancia diaria de peso (GDP), conversión alimenticia (CA), peso y contenido de grasa de la canal de borregos. Los tratamientos fueron: 1) testigo (T; sin Cr, Se, ni SC); 2) T + Cr + Se; 3) T + SC; y 4) T + Cr + Se + SC, los cuales se asignaron al azar a 20 borregos criollos (29.88 ± 2.98 kg) en finalización para el experimento de variables productivas; y en un cuadro latino 4 x 4 con cuatro borregos machos (30 ± 2 kg) con cánula ruminal para evaluar degradación in situ y variables de fermentación... |
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Palavras-chave: Cromo; Selenio; Levadura; Ovinos; Digestibilidad; Rumen; Chromium; Selenium; Yeast; Sheep; Digestibility; Maestría; Ganadería. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/750 |
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| Zhang,Min; Shi,Jun; Jiang,Li. |
| Background Yeast strains are exposed to numerous environmental stresses during industrial alcoholic fermentation. High temperature accumulated acetic acid, enhanced the growth inhibition and decreased ethanol production. Results In this study the influence of high temperature on the cellular and mitochondrial membrane integrity of Saccharomyces cerevisiae as well as reactive oxygen species (ROS) formation was investigated to understand the mechanisms of the high temperature fermentation process. However, increasing the temperature to 42°C resulted in a clear decrease in the cytoplasmic and mitochondrial membrane potential and an increase in intracellular ROS formation. It was also determined that the different thermostability between YZ1 and YF31 strains... |
| Tipo: Journal article |
Palavras-chave: Bioethanol; Random amplified polymorphic DNA (RAPD); Yeast. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000300010 |
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| Vakhlu,Jyoti. |
| Lipases are placed only after proteases and carbohydrases in world enzyme market and share about 5% of enzyme market. They occur in plants, animals and microorganisms and are accordingly classified as plant, animal and microbial lipases. Wherever they exist, they function to catalyze hydrolysis of triglycerides to glycerol and fatty acid. Like carbohydrases and proteases, lipases of microbial origin enjoy greater industrial importance as they are more stable (compared to plant and animal lipases) and can be obtained in bulk at low cost. Majority of yeast lipases are extracelluar, monomericglycoproteins with molecular weight ranging between ~33 to ~65 kD. More than 50% reported lipases producing yeast, produce it in the forms of various isozymes. These... |
| Tipo: Journal article |
Palavras-chave: Candida; Geotrichum; Lipase; Trichosporon; Yeast. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000100010 |
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| Aubin, Joel; Gatesoupe, Joel; Labbe, Laurent; Lebrun, Luc. |
| Two probiotics were tested as alternative treatment to limit the prevalence of the vertebral column compression syndrome (VCCS) in rainbow trout, compared with a preventive treatment with florfenicol. Either the antibiotic, or a lactic acid bacterium, Pediococcus acidilactici, or a yeast, Saccharomyces cerevisiae var. boulardii, was introduced into experimental diets, which were compared with the control diet without supplementation. The antibiotic caused some mortality during the first week after treatment, likely because of the toxicity of the compound. However, this antibiotic treatment limited the occurrence of VCCS to 3%, vs. 13% of fish affected in the control group. Pediococcus acidilactici provided the same level of protection as the antibiotic,... |
| Tipo: Text |
Palavras-chave: Carnobacterium; Debaryomyces hansenii; Pseudomonas; Antibiotic; Lactic acid bacterium; Yeast; Spinal deformities. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-752.pdf |
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| Gatesoupe, Joel. |
| This minireview summarizes the present state of knowledge concerning the importance of yeasts in fish gut. Yeasts have been commonly isolated in the gastrointestinal tract, and high population densities were sometimes noted in healthy fish, but the data were quite variable in terms of colony counts and taxonomical diversity. Rhodotorula sp. seemed relatively frequent in both marine and freshwater fish, and Debaryomyces hansenii has been found to be dominant in rainbow trout. Some other dominant strains have been described, such as Metschnikowia zobelii, Trichosporon cutaneum, and Candida tropicalis in marine fish, and Candida sp., Saccharomyces cerevisiae, and Leucosporidium sp. in rainbow trout. The natural proliferation of yeasts in fish mucus may be... |
| Tipo: Text |
Palavras-chave: Immune system; Growth promotion; Gut maturation; Gastrointestinal microbiota; Probiotics; Yeast. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2144.pdf |
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| Wache, Yann; Auffray, Francoise; Gatesoupe, Joel; Zambonino, Jose-luis; Gayet, Vincent; Labbe, Laurent; Quentel, C. |
| Two strains of Saccharomyces cerevisiae were tested as probiotics for rainbow trout fry, during the first month of feeding. Each strain was introduced into separate diets, at the rate of 106 CFU g− 1 and their effects were compared with those of a control diet. Two rearing conditions were simultaneously compared, to test the adaptability of the probiotic treatment. From start feeding onwards, the water supply came from either spring or river, resulting in two different temperature ranges, 11¿11.5 and 7¿8 °C respectively. Growth and development were optimal in spring water, while some delay was observed with colder river water. A slight but significant increase in mortality was also observed in the river group. In all groups, the counts of... |
| Tipo: Text |
Palavras-chave: Debaryomyces hansenii; Yeast; Brush border membrane; Gut maturation; Larval development; Start feeding. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1816.pdf |
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| Fialho,Maurício Batista; Moraes,Maria Heloisa Duarte de; Tremocoldi,Annelise Roberta; Pascholati,Sérgio Florentino. |
| The objective of this work was to evaluate the potential of an artificial mixture of volatile organic compounds (VOCs), produced by Saccharomyces cerevisiae, to control Sclerotinia sclerotiorum in vitro and in bean seeds. The phytopathogenic fungus was exposed, in polystyrene plates, to an artificial atmosphere containing a mixture of six VOCs formed by alcohols (ethanol, 3-methyl-1-butanol, 2-methyl-1-butanol and phenylethyl alcohol) and esters (ethyl acetate and ethyl octanoate), in the proportions found in the atmosphere naturally produced by yeast. Bean seeds artificially contamined with the pathogen were fumigated with the mixture of VOCs in sealed glass flasks for four and seven days. In the in vitro assays, the compounds 2-methyl-1-butanol and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris; Alternative control; Fumigation; White mold; Yeast. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000200004 |
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| Silva,Franceli da; Santos,Ricardo Henrique Silva; Andrade,Nélio José de; Barbosa,Luiz Cláudio Almeida; Casali,Vicente Wagner Dias; Lima,Renato Ribeiro de; Passarinho,Ricardo Vaz de Melo. |
| Fresh basil (Ocimum basilicum L.) is used in food, phytotherapic industry, and in traditional therapeutic, due to its essential oil content and composition. Nevertheless basil can not be kept for long periods after harvest and its quality can be reduced. This work aimed to assess the influence of the season and harvest time in the postharvest conservation of basil stored for different periods. Basil was harvested at 8 am and 4 pm both in August/1999 and January/2000. Cuttings were conditioned in PVC packages and stored for 3, 6, and 9 days. During storage, chlorophyll content, essential oil content and composition were determined as well as microbiological analyses were carried out. Harvest season and the days of storage influenced the final content of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ocimum basilicum; Eugenol; Linalool; Chlorophyll; Mold; Yeast. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005000400002 |
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| Pelícia,K; Mendes,AA; Saldanha,ESPB; Pizzolante,CC; Takahashi,SE; Moreira,J; Garcia,RG; Quinteiro,RR; Paz,ICLA; Komiyama,CM. |
| This study aimed to evaluate the effects of probiotics and prebiotics of bacterial and yeast origin on the performance, development of the digestive system, carcass yield and meat quality of free-range broiler chickens. Five hundred and sixty male chicks of the strain ISA S757-N were reared from one to 84 days old. The birds were distributed in four treatments according to a completely randomized block design: T1 = Control, T2 = Probiotics and Prebiotics of bacterial origin, T3 = Probiotics and prebiotics of yeast origin, T4 = Probiotics and prebiotics of bacterial origin + probiotics and prebiotics of yeast origin. There were four repetitions with 35 birds per repetition, and the birds had access to a pasture area after 35 days of age. Characteristics... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Free-range broiler chickens; Digestive system; Probiotics; Symbiotics; Yeast. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000300006 |
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| 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 |
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| Encinas,Christian Michael Alvarez; Villalobos,Guillermo Villalobos; Viveros,Joel Domínguez; Flores,Gabriela Corral; Almora,Enrique Alvarez; Rangel,Francisco Castillo. |
| ABSTRACT The objective of this study was to evaluate the effect of a mixture of direct-fed microbials (DFM), yeast, and digestive enzymes on animal performance in feedlot cattle, as well as digestibility when finishing feedlot cattle. Thirty crossbreed (Charolais × Beefmaster) steers averaging 15 months old and 321.83±3.73 kg of initial body weight were used. Animals were randomly assigned to one of two treatment groups: control (basal diet) and a mixture of DFM, yeast, and digestive enzymes (basal diet + 30 g of the mixture). Each group contained fifteen experimental units. Animals were fed individually twice a day, and dry matter intake (DMI) was recorded daily. Body weights were recorded initially and subsequently at 28-day intervals for a total of 140... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enzymes; Finishing; Probiotics; Saccharomyces cerevisiae; Yeast. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100615 |
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| Muck,Richard E.. |
| Ensiling is a method of preserving a moist crop. A moist crop can support the growth of a wide range of microorganisms, most of which will degrade the nutrient value to livestock. However, ensiling generally controls microbial activity by a combination of an anaerobic environment and a natural fermentation of sugars by lactic acid bacteria on the crop. This fermentation and the resulting low pH primarily suppress the growth of other anaerobic microorganisms. The fermentation can also inhibit yeasts, molds and aerobic bacteria, but the anaerobic environment is essential to preventing most of the spoilage microorganisms from growing. Inoculants have become the dominant additives for making silage. Homofermentative strains help guarantee a rapid suppression... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Clostridia; Enterobacteria; Inoculant; Lactic acid bacteria; Mold; Yeast. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001300021 |
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| Alcarde,André Ricardo; Walder,Júlio Marcos Melges; Horii,Jorge. |
| Bacillus and Lactobacillus are bacteria that usually contaminate the ethanolic fermentation by yeasts and may influence yeast viability. As microorganisms can be killed by ionizing radiation, the efficacy of gamma radiation in reducing the population of certain contaminating bacteria from sugarcane must was examined and, as a consequence, the beneficial effect of lethal doses of radiation on some parameters of yeast-based ethanolic fermentation was verified. Must from sugarcane juice was inoculated with bacteria of the genera Bacillus and Lactobacillus. The contaminated must was irradiated with 2.0, 4.0, 6.0, 8.0 and 10.0 kGy of gamma radiation. After ethanolic fermentation by the yeast (Saccharomyces cerevisiae) the total and volatile acidity produced... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacteria; Gamma radiation; Yeast. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400011 |
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| Registros recuperados: 75 | |
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