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KMID : 0380020060210060474
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Korean Journal of Biotechnology and Bioengineering
2006 Volume.21 No. 6 p.474 ~ p.478
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Ethanol Production by Synchronous Saccharification and Fermentation using Food Wastes
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Han Hyo-Jung
Li Hong-Xian
Kim Seong-Jun
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Abstract
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For the economically feasible production of ethanol, utilization of SFW (saccharified food wastes) as substrate for synchronous saccharification and fermentation (SSF) process was developed in this study. When 200 g of food wastes and 40 mL of enzyme () were reacted, production rate of reducing sugar was , and consumption rate was So suitable condition of SSF was concluded at temperature of . Also, optimal enzyme concentration of SSF was concluded in , at this condition, the production rate of reducing sugar was At SSF process, when 50 g of food wastes was supplied in 12 h interval, of ethanol and 0.45 g-ethanol/g-reducing sugar in yield were obtained in 120 h fermentation. Thus, the technology of high yield of ethanol production using food wastes was confirmed. And semi-continuos SSF system for cutting off cost of enzymatic saccharification was developed in this study.
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KEYWORD
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Ethanol, Saccharomyces italicus, saccharified food wastes, SFW, synchronous saccharification and fermentation, SSF
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