Potato starch as substrate for ethanol production by Saccharomyces cerevisiae
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Date
2006
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Publisher
CCSHAU
Abstract
Ethanol is one of the most important feed stock for industrial chemicals
and is also used as liquid fuel. In India, ethanol is produced by fermentation of
molasses by S. cerevisiae. In recent years because of decontrol of molasses, there
is limited availability of good quality molasses and ethanol production has not
exceeded 2.7 billion liters. So under new regulations, a new look need to be
taken with regard to easily available and renewable substitutes such as starch for
ethanol production. Potato is considered as potential substrate because of high
content of starch and its increase in cultivation year after year.
The concentration of slurry in potato grates and mashed potato for
liquefaction by enzyme Termamyl-100 was found to be 1:1 & the amount of
enzyme required for liquefaction of slurries prepared from potato grates and
mashed potato was found to be 750 and 500 μl for 100 g of material respectively.
The homogenous slurry of potato flour was obtained using ratio of potato flour :
water