【摘 要】
：
The process parameters of ethanol production from cassava (Manihot esculenta crantz) fermentation were optimized through single-factor experiments based on
【机 构】
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Hunan Provincial Key Laboratory for Germplasm Innovation and Utilization of Crop, Hunan Agricultural
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The process parameters of ethanol production from cassava (Manihot esculenta crantz) fermentation were optimized through single-factor experiments based on Uniform Design (UD) and support vector regression (SVR).The optimal ethanol yield (15.7%) was obtained at the following conditions: reactant/water ratio,1∶1.8; initial pH,3.5; temperature,32℃; yeast,3.5 × 107 cell/mL; (NH4)2SO4,0.5 g; rotation speed,140 rpm; glucoamylase,200 u/g; amylase,12 u/g; cellulase,25 u/g; fermentation cycle,120 h.The maximum raw material conversion (38.63%) was obtained at the following conditions: reactant/water ratio,1∶3.1; initial pH,4; temperature,36℃; yeast,5.5 × 107 cell/mL; (NH4)2SO4,1 g; rotation speed,160 rpm; glucoamylase,110 u/g; amylase,10 u/g; cellulase,25 u/g; fermentation cycle,120 h.
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