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자료유형
학술저널
저자정보
Gao, Xing-Ai (Institute of Rural Energy, Jilin Academy of Agricultural Sciences) Zhang, Yong-Feng (Institute of Rural Energy, Jilin Academy of Agricultural Sciences) Park, Ro-Dong (Division of Applied Bioscience and Biotechnology, Chonnam National University) Huang, Xiao (Institute of Rural Energy, Jilin Academy of Agricultural Sciences) Zhao, Xin Ying (Institute of Rural Energy, Jilin Academy of Agricultural Sciences) Xie, Jiao (Institute of Rural Energy, Jilin Academy of Agricultural Sciences) Jin, Rong-De (Agricultural Environment and Resources Research Center, Jilin Academy of Agricultural Sciences)
저널정보
한국응용생명화학회 Journal of applied biological chemistry Journal of applied biological chemistry 제55권 제1호
발행연도
2012.1
수록면
13 - 17 (5page)

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In order to enzymatically produce chitooligosaccharide using the crude enzyme preparation from Bacillus cereus D-11, we first studied the optimal reaction conditions. It was found that the optimal temperature for hydrolysis of chitosan was $55^{\circ}C$. The ratio of enzyme/substrate should not be lower than 0.13 U/mg in the reaction mixture. The enzyme activity was stable below $50^{\circ}C$. The products of enzymatic reaction were analyzed by both thin layer chromatography and high performance liquid chromatography. Under the appropriate condition, chitosan was hydrolyzed using the enzyme preparation. The resulting chitooligosaccharides were purified and separated by Dowex ($H^+$) ion exchange chromatography. From 4 g soluble chitosan, 0.95 g $(GlcN)_2$, 1.43 g $(GlcN)_3$, and 1.18 g $(GlcN)_4$ were recovered.

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