Enzymatic saccharification of wheat starch by glucoamylase from Aspergillus niger A-20 and the alcoholic fermentation of the hydrolysates by Saccharomyces cerevisiae JY
1994
Rahman, A.K.M.S. | Rahman, M.F. | Hossain, M. | Feroza, B. | Nath, P.K. | Hoq, M.M.
Saccharification studies of crude glucoamylase preparations showed that the action of enzyme extract on raw starch was not significant (22.3%). At 80 Deg.C, a substantial amount of hydrolysis occurred after 72 h of incubation. It was observed that the conversion rate increased to 85% upon acid steeping. Alcoholic fermentation of saccharified wheat starch was also carried out with the ethanol producing yeast Saccharomyces cerevisiae JY. It produced 5.15% (v/v) ethanol in a medium containing 10% starch (saccharified to 8.43% fermentable sugars) at temperature 30 deg. C (pH 5.0). The conversion efficiency was 95.45%.
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