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固定化β-葡萄糖苷酶的酶学性质(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2007年03期
Page:
29-33
Column:
研究论文
publishdate:
2007-03-20

Article Info:/Info

Title:
Enzymology Characteristics of Immobilized β-glucosidase
Article ID:
1000-2006(2007)03-0029-05
Author(s):
ZHU Jun-jun JIANG Xiao-hua YONG Qiang* YU Shi-yuan
College of ’heroical Engineering Nanjing Forestry University, Nan. iing 210037, China
Keywords:
β-glucosidase Immobilization Chitosan
Classification number :
TQ920.1; Q814.2
DOI:
10.3969/j.jssn.1000-2006.2007.03.006
Document Code:
A
Abstract:
The enzymology characteristics of immoobilized and free 13-glucosidase were investigated. The optimal pH of immobilized and free 13-glucosidase was 4.5. The optimal temperature of immobihzed β-glucosidase was 60 C, which was 5 C lower than that of free 13 glucosi dase. hs stabilities of pH and storing were obviously higher than that of free β-glucosidasc, but its thermal stability was a little lower than that of free 13-glucosidase. The apparent Km and Km of immobilized and free 13-glucosidase were 0.52 mmol/L and 2.4 mmol/L, respec tively. The immobilized 13 glucosidase was used to hydrolyze 10g/L cellobiose solmion re peatedly, its half life time was about 31days.

References

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Last Update: 2013-05-20