摘要
对黑曲霉菌株所产的木聚糖酶性质进行了研究。结果表明:该酶的酶活力为69913IU·g-1,最适反应温度为45℃,最适pH值为3.6,pH稳定范围较广,热稳定性在50℃以下,一般金属阳离子对该酶影响不大,适用于低聚木糖工业生产。
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.
出处
《湖北农业科学》
北大核心
2005年第3期62-64,共3页
Hubei Agricultural Sciences
基金
华中农业大学人才基金项目(03047)
关键词
木聚糖酶
黑曲霉
酶学性质
xylanase
Asperglllus nlger
enzymic characteristics
