For comparison with the proposed efficient ethanol conversion process, OPT was subjected to hydrothermal
treatment at 180 °C for 30 min. After enzymatic hydrolysis of PWS, 43.5 g of glucose per 100 g dry biomass was
obtained, which corresponds to 81.3 % of the theoretical glucose yield. Through subsequent alcohol fermentation,
81.4 % ethanol yield of the theoretical ethanol yield was achieved. To conduct the proposed new process, starch in
OPT was converted to ethanol through enzymatic hydrolysis and subsequent fermentation prior to hydrothermal
treatment, and the resulting slurry was subjected to identical processes that were applied to control. Consequently,
a high-glucose yield of 96.3 % was achieved, and the resulting ethanol yield was 93.5 %.
For comparison with the proposed efficient ethanol conversion process, OPT was subjected to hydrothermaltreatment at 180 °C for 30 min. After enzymatic hydrolysis of PWS, 43.5 g of glucose per 100 g dry biomass wasobtained, which corresponds to 81.3 % of the theoretical glucose yield. Through subsequent alcohol fermentation,81.4 % ethanol yield of the theoretical ethanol yield was achieved. To conduct the proposed new process, starch inOPT was converted to ethanol through enzymatic hydrolysis and subsequent fermentation prior to hydrothermaltreatment, and the resulting slurry was subjected to identical processes that were applied to control. Consequently,a high-glucose yield of 96.3 % was achieved, and the resulting ethanol yield was 93.5 %.
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