2005•Hubei nongye kexueRequires access

Study on the properties of xylanases of Asperglllus niger

Xiaofeng Luo, Jin He, Yu Ziniu

Abstract

Xylanase from Asperglllus nlger was extracted with (NH4)2 S04 and its characteristics were analyzed. After extraction and freeze-drying,its specific activity was 69913 IUg-1. The optimal temperature for xylanase activity was 45℃ and optimal pH was 3.6. Xylanase activity was stable below 50℃ and from pH4.0 to pH11.0.The common metal cation had little effect on the enzyme. So the enzyme could be used in the industrial production of Xylooligosacchrides.

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Key concepts: Xylanase, Chemistry, Enzyme, Food science, Enzyme assay, Extraction (chemistry), Biochemistry, Chromatography