C - Chemistry – Metallurgy – 12 – P
Patent
C - Chemistry, Metallurgy
12
P
C12P 7/06 (2006.01) C08B 30/02 (2006.01) C12P 19/14 (2006.01)
Patent
CA 2660415
The invention provides a method for producing ethanol from steam exploded sweet potato by fermentation which includes the steps of: 1) subjecting sweet potato to a steam explosion treatment; 2) subjecting the sweet potato after the steam explosion to saccharification and fermentation; and 3) collecting ethanol produced by the fermentation. In the invention, sweet potato is subjected to a pre-treatment utilizing a short-time, low-pressure steam explosion technology, which omits the long-time cooking process for the starch-based raw material and reduces the energy consumption for producing ethanol by fermentation; and because the steam explosion treated sweet potato is subjected directly to saccharification and solid-state fermentation, the water content in fermentation mash is reduced greatly so as to increase the concentration of ethanol in fermentation mash, reduce the energy consumption for distillation, reduce the subsequent treatment steps for the waste water and lower the producing cost, which is beneficial to the comprehensive utilization of sweet potato.
Chen Hongzhang
Fu Xiaoguo
Wang Weidong
Gowling Lafleur Henderson Llp
Hu Nan Qiangsheng Medicine Co. Ltd.
Institute Of Process Engineering Chinese Academy Of Sciences
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