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福寿螺纤维素酶的开发与应用
Authors
周兴旺
唐志军
庄总来
陈清西
Publication date
20 February 2000
Publisher
Abstract
以福寿螺内脏为材料 ,制备纤维素酶粉。测定各组分的酶活力分别为 :内切葡聚糖酶 2 0 .6 5万U/ g ;( β 葡萄糖苷酶 4.2 4万U/ g ;外切葡聚糖酶 0 .48万U/g ;酶粉的蛋白质含量为 37.6 9%、水分为 7.96 %、灰分为 1 .78%。以花生壳作为纤维素酶作用对象 ,测定酶促反应的最适pH为 5 .2 6 ,最适温度为 5 2℃。在 pH5 .2、40℃下 ,纤维素酶作用于花生壳生成葡萄糖 ,在 2h内葡萄糖的生成量与反应时间成正比关系 ,然后逐渐缓慢 ;随着酶浓度的增大 ,葡萄糖的量也呈直线上升 ,说明从福寿螺分离得到的纤维素酶能有效地水解花生壳转化为可被利用的葡萄糖
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Last time updated on 16/06/2016