ETHANOL YIELDS IN FERMENTATION FROM AN IMPROVED LIQUEFACTION PROCESS

摘要

An improved liquefaction process comprises the use of an increased dose of alpha-amylase coupled with a liquefaction temperature no higher than 99° C., e.g., in the range of about 88-92° C. The improved liquefaction process advantageously omits the conventional high-temperature treatment, e.g., jet-cooking at a temperature of about 95-125° C., so that starch can be processed more economically into ethanol, for example. In one embodiment, the improved liquefaction process results in an increased yield of ethanol using commercially available alpha-amylases.