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| Registros recuperados: 128 | |
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| 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 |
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| Soares,Giselle A. M.; Sato,Hélia H.. |
| The strain Saccharomyces cerevisiae Y500-4L, selected from the must of alcohol producing plants, liberates a toxin which is lethal to the commercial yeast produced by Fleischmann Royal Nabisco and other strains of yeast. This toxin was characterized, and the maximum production was obtained after 24 hours of incubation at 25ºC in YEPD medium. The maximum activity was achieved between pH 4.1 and 4.5 and between 22 and 25ºC and maximum stability in the pH range 3.8 to 4.5 at -10ºC. The killer toxin was inactivated by heating at 40ºC for 1 hour at pH 4.1. After concentration by ultrafiltration of culture supernatants and purification by gel filtration chromatography, the molecular weight of the purified toxin was estimated by SDS-PAGE to be about 18-20 kDa. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Killer toxin; Saccharomyces cerevisiae; Killer yeast. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000400010 |
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| Velásquez,Alejandro; Arias,Rodrigo; Toneatti,Marcelo. |
| Extracts of Saccharomyces cerevisiae (Sc) yeast were generated using a biotechnological solid-state fermentation method. The organic material used for fermentation consisted of a variety of fibrous substrates of agricultural origin, and their effect on the chemical composition and productivity of cellular biomass generated was evaluated. The substrates studied included the following: wheat straw, WS; barley straw, BS; chili stubble, CS; oat hull, OH and starch powder, SP (control). For incubation with Sc, 2 g of (dry) vegetable substrate were added to 12 mL of cultivation medium. The fermentation time was seven days under aerobic conditions (pH 5, 26°C). After extraction of the yeast biomass, its chemical composition and productivity were analyzed. The... |
| Tipo: Journal article |
Palavras-chave: Protein concentrate; Saccharomyces cerevisiae; Vegetable substrate. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000300003 |
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| Gonçalves,Ligia Uribe; Carvalho,Márcia de; Viegas,Elisabete Maria Macedo. |
| Neste trabalho, avaliou-se a adição de células íntegras de levedura e seus derivados em dietas para juvenis de tilápia do Nilo. Foram utilizados 144 juvenis machos de tilápia (peso médio de 52,1g) distribuídos em 12 tanques de fibra de vidro (250L), em delineamento inteiramente casualizado, composto por quatro tratamentos e três repetições. Os peixes foram alimentados ad libitum, duas vezes ao dia durante 60 dias, com dietas isoproteicas (28% PB) e isocalóricas (2.900kcal de ED kg-1) contendo levedura íntegra de cana-de-açúcar (LI), levedura autolisada (LA) e parede celular (PC) adicionados na proporção de 25% da proteína bruta total, comparadas com uma dieta controle (CO), sem adição de levedura. Não foram observadas diferenças significativas para... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oreochromis niloticus; Levedura de cana-de-açúcar; Desempenho zootécnico; Parede celular; Levedura autolisada; Saccharomyces cerevisiae. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000500027 |
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| Registros recuperados: 128 | |
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