Fermentation of Acid-pretreated Corn Stover to Ethanol Without Detoxification Using Pichia stipitis
FK Agbogbo, FD Haagensen, D Milam… - … April 29–May 2, 2007, in …, 2008 - Springer
FK Agbogbo, FD Haagensen, D Milam, KS Wenger
Biotechnology for Fuels and Chemicals: Proceedings of the Twenty-Ninth …, 2008•SpringerIn this work, the effect of adaptation on P. stipitis fermentation using acidpretreated corn
stover hydrolyzates without detoxification was examined. Two different types of adaptation
were employed, liquid hydrolyzate and solid state agar adaptation. Fermentation of 12.5%
total solids undetoxified acid-pretreated corn stover was performed in shake flasks at
different rotation speeds. At low rotation speed (100 rpm), both liquid hydrolyzate and solid
agar adaptation highly improved the sugar consumption rate as well as ethanol production …
stover hydrolyzates without detoxification was examined. Two different types of adaptation
were employed, liquid hydrolyzate and solid state agar adaptation. Fermentation of 12.5%
total solids undetoxified acid-pretreated corn stover was performed in shake flasks at
different rotation speeds. At low rotation speed (100 rpm), both liquid hydrolyzate and solid
agar adaptation highly improved the sugar consumption rate as well as ethanol production …
Abstract
In this work, the effect of adaptation on P. stipitis fermentation using acidpretreated corn stover hydrolyzates without detoxification was examined. Two different types of adaptation were employed, liquid hydrolyzate and solid state agar adaptation. Fermentation of 12.5% total solids undetoxified acid-pretreated corn stover was performed in shake flasks at different rotation speeds. At low rotation speed (100 rpm), both liquid hydrolyzate and solid agar adaptation highly improved the sugar consumption rate as well as ethanol production rate compared to the wild-type strains. The fermentation rate was higher for solid agar-adapted strains compared to liquid hydrolyzate-adapted strains. At a higher rotation speed (150 rpm), there was a faster sugar consumption and ethanol production for both the liquid-adapted and the wild-type strains. However, improvements in the fermentation rate between the liquid-adapted and wild strains were less pronounced at the high rotation speed.
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