2009•China BrewingRequires access
Fuel alcohol production technology with the fermentation of uncooked corn flour
Jia Peng
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Abstract
Fuel alcohol production technology with the fermentation of uncooked corn flour was studied in this paper. The results were as following: through the orthogonal experiment, the optimum conditions of uncooked corn fermentation were 0.3% yeast, 200 U/g saccharifying enzyme, 0.15% cellulase, the ratio of material to water 1∶2.5, the stirring speed 140 r/min, and the fermentation temperature 29℃. Under these conditions, the fermentation was processed in a 10 L fermenter, and through the fermentation period of 120 h, the final utilization ratio of starch is 93% or so. Taking the comprehensive technological and economic benefit into consideration, the optimum conditions are designed as 0.2% yeast, 250 U/g saccharifying enzyme, 0.1% cellulase, the ratio of material to water 1∶2.5, the stirring speed 140r/min, the fermentation temperature 29℃, and the fermentation period 85 h～95 h.