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Ethanol fermentation of grain mashes without cooking process using a transformed yeast strain with a glucoamylase gene from Rhizopus oryzae

, : Ethanol fermentation of grain mashes without cooking process using a transformed yeast strain with a glucoamylase gene from Rhizopus oryzae. Bulletin of the Institute for Comprehensive Agricultural Sciences, Kinki University ( 1): 49-54

Grain mashes (maize, barley and rice) were inoculated with Saccharomyces cerevisiae without cooking after the addition of glucoamylase (5 IU/g) with an enzyme preparation from Rhizopus sp. The germentation efficiencies ((final ethanol (g) produced/initial total starch (g) in a mash x 0.568) x 100) were 79.7% for maize, 85.6% for barley and 87.7% for rice after 6.7 d fermentation at 27 degrees C in flask scale fermenters.

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