本文就乳糖酶的性质、分离提取、固定化及应用等方面进行综述。
In this paper are expounded the features, the separation and extraction, the immobilization and the utilization of lactase.
用等电聚焦电泳法测得其等电点约为7.2。 结论：从栖热菌中提取的耐热乳糖酶的理化性质不同于其它来源的乳糖酶。
Its pI was about 7.2. Conclusion:The thermostable lactase from strain of thermus sp A3 was different from lactases from other microorganism.
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