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The Production of Xylitol by Enzymatic Hydrolysis of Agricultural Wastes
Kazuhiro Takamizawa,Lien Ha Tran,Masanori Yogo,Hiroshi Ojima,Keiichi Kawai,Tohru Suzuki,Osamu Idota 한국생물공학회 2004 Biotechnology and Bioprocess Engineering Vol.9 No.3
Agricultural waste products, beech wood and walnut shells, were hydrolyzed at 40oC using mixed crude enzymes produced by Penicillium sp. AHT-1 and Rhizomucor pusillus HHT-1. D-xylose, 4.1 g and 15.1 g was produced from the hydrolysis of 100 g of beech wood and walnut shells, respectively. For xylitol production, Candida tropicalis IFO0618 and the waste product hydrolyzed solutions were used. The effects on xylitol production, of adding glucose as a NADPH source, D-xylose and yeast extract, were examined. Finally, a 50% yield of xylitol was obtained by using the beech wood hydrolyzed solution with the addition of 1% yeast extract and 1% glucose at an initial concentration.