O-19 セルロース系バイオマスからの2段階発酵法によるバイオエタノール生産(セッション4:技術II,研究発表(口頭発表))

概要

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We isolated the xylose fermenting yeast (SS1-2) from solids in Japan and also developed the novel ethanol production system using Saccharomyces cerevisiae and SS1-2 from cellulosic biomass. Firstly, liquefied biomass was fermented by S cerevisiae. Then glucose was converted to ethanol. After l5rst fermentation, fermented broth was treated by gas-stripping using N_2 gas in order to remove the ethanoL Secondly, the treated broth was fermented by SS1-2. Then xylose was converted to ethanol. Various cellulosic biomasses were investigated using this novel system. Saccharifled-liquid was obtained by anmonia-pretreatement and cellulase treatment. Saccharified-liquid of Salixpet-susu contained 54 g/L of glucose and 17 g/L of xylose. When ethanol production was done using novel production system, 32 g/L of ethanol was produced and theoretical yield was 90%.
2011-01-12