A new technology of fuel ethanol fermentation using fresh raw sweetpotato by Zymomonas mobilis
(0) A new technology of ethanol fermentation was developed using uncooked fresh sweetpotato as raw material. A mutant strain of Aspergillus niger was used to produce raw starch lysis and saccharifica-tion enzymes,and the Gram negative bacterium Zymomonas mobilis,which has many advantages over Saccharomyces cerevisiae, was used to ferment ethanol from fresh and uncooked sweetpotato storage roots. The fermentation conditions, including the amount of inoculum, the age of inoculum,and the pH, temperature and duration of fermentation,were studied to develop an optimized protocol for ethanol fermentation. Under the optimized conditions,26.4 mL of ethanol (200 ml_ of 13.2％ ethanol v/v) was produced from 100 grams of fresh sweetpotato storage roots and the media for growing microbial inocula (total dried biomass including sweetpotato about 50.6 grams). This method requires no heating or cooking of sweetpotato and produces high concentrations of ethanol at high energy conversion rates. Through the implementation of this method,an energy-saving,environment-friendly and highly efficient new technology can be developed for large-scale production of fuel ethanol from raw sweetpotato.
Zymomonas mobilis Aspergillus niger fuel ethanol fermentation sweetpotato
Zhang Peng Chen Caifa Shen Yanhu Ma Daifu Sun Dongxu
School of Life Sciences,Xuzhou Normal University,Xuzhou,Jiangsu,221116 Xuzhou Academy of Agricultural Sciences/Sweetpotato Research Institute,CAAS Xuzhou Sweetpotato Resea
国际会议
徐州
英文
618-625
2010-11-27（万方平台首次上网日期，不代表论文的发表时间）