Fed batch enzymatic saccharification of food waste improves the sugar concentration in the hydrolysates and eventually the ethanol fermentation by Saccharomyces cerevisiae H058
作者: Shoubao YanJianming YaoLiming YaoZhijun ZhiXiangsong ChenJingyong Wu
刊名: Brazilian Archives of Biology and Technology, 2012, Vol.55 (2), pp.183-192
来源数据库: Directory of Open Access Journals
DOI: 10.1590/S1516-89132012000200002
关键词: Food wasteEnzymatic hydrolysisHydrolysatesFermentationEthanol production
原始语种摘要: The enzymatic hydrolysis of food waste by commercially available enzymes and the subsequent ethanol fermentation of the hydrolysates by Saccharomyces cerecisiae H058 were studied in this work. The optimum batch enzymatic conditions were found to be saccharification pH of 4.5, temperature of 55!, glucoamylase concentration of 120 u/g, α-amylase concentration of 10 u/g, solid-liquid ratio of 1: 0.75 (w/w). Fed batch hydrolysis process was started with a solid-liquid ratio of 1: 1 (w/w), with solid food waste added at time lapse of 2 h to get a final solid-liquid ratio of 1: 0.5 (w/w). After 4 h of reaction, the reducing sugar concentration reached 194.43 g/L with a enzymatic digestibility of 93.12%. Further fermentation of the batch and fed batch enzymatic hydrolysates, which contained...
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  • waste 岩屑
  • fermentation 发酵
  • concentration 浓度
  • batch 一批
  • enzymatic 酶催的
  • ratio 
  • ethanol 乙醇
  • sugar 
  • studied 学习
  • Fermentation 发酵