以环氧和氨基化的大孔树脂为载体,戊二醛为交联剂对木瓜蛋白酶进行了固定化,研究了不同载体和固定化条件对酶固定化率和相对活性的影响,考察了不同温度和pH值下游离酶和固定化酶的稳定性.实验结果表明,当给酶量为40 mg,固定化温度为77℃,固定化时间为12 h,pH值为6.5时,固定化酶的活性最高.与游离酶相比,固定化酶有更好的温度和pH值稳定性.
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