Very High Gravity Fermentation
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Enhanced ethanol production at commercial scale from molasses using high gravity technology by mutant S. cerevisiae
Abstract Very high gravity (VHG) technology was employed on industrial scale to produce ethanol from molasses (fermented) as well as by-products formation estimation. The effect of different Brix° (32, 36 and 40) air-flow rates (0.00, 0.20, 0.40, and 0.60 vvm) was studied on ethanol production. The maximum ethanol production was recorded to be 12.2% (v/v) a
Braz. J. Microbiol.. Publicado em: 2017-07
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2. Seleção de leveduras para a fermentação com alto teor alcoólico a partir da biodiversidade encontrada em destilarias brasileiras / Yeast selection from the biodiversity of Brazilian distilleries for high ethanol content fermentation
O Brasil é o segundo maior produtor e um dos maiores exportadores de etanol no mundo e tal biocombustível tem grande impacto na economia do país. A expectativa é de grande demanda por tal produto, quer pelo crescente consumo interno, como também em decorrência do fim do protecionismo nos Estados Unidos. Portanto, o Brasil deverá produzir mais etanol e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/07/2012
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3. Fuel Alcohol Production: Optimization of Temperature for Efficient Very-High-Gravity Fermentation
The time required to end ferment wheat mash decreased as the temperature was increased from 17 to 33°C, but it increased as the concentration of dissolved solids was raised from 14.0 to 36.5 g/100 ml. Ethanol yield was not appreciably affected. Over the range of fermentation temperatures tested, the addition of urea accelerated the rate of fermentation, dec
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4. Fuel alcohol production: effects of free amino nitrogen on fermentation of very-high-gravity wheat mashes.
Although wheat mashes contain only growth-limiting amounts of free amino nitrogen, fermentations by active dry yeast (Saccharomyces cerevisiae) were completed (all fermentable sugars consumed) in 8 days at 20 degrees C even when the mash contained 35 g of dissolved solids per 100 ml. Supplementing wheat mashes with yeast extract, Casamino Acids, or a single
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5. Effects of particulate materials and osmoprotectants on very-high-gravity ethanolic fermentation by Saccharomyces cerevisiae.
The effects of osmoprotectants (such as glycine betaine and proline) and particulate materials on the fermentation of very high concentrations of glucose by the brewing strain Saccharomyces cerevisiae (uvarum) NCYC 1324 were studied. The yeast growing at 20 degrees C consumed only 15 g of the sugar per 100 ml from a minimal medium which initially contained 3