文献类型：期刊文献

中文题名：聚乙二醇改性壳聚糖固定化L-天门冬酰胺酶反应性质研究

英文题名：Reaction Properties of L-Asparaginase Immobilized on Chitosan Modified with Polyethylene Glycol

作者：霍红光[1];方波[1];江体乾[1]

机构：[1]华东理工大学化学工程研究所,上海200237

年份：2005

卷号：31

期号：3

起止页码：277

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;EI(收录号：2005289209177);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：聚乙二醇改性壳聚糖;固定化L-天门冬酰胺酶;酶催化反应

外文关键词：polyethylene glycol-chitosan; immobilized L-asparaginase; enzyme catalysis reaction

摘要：研究了聚乙二醇改性壳聚糖(PEG-CS)固定化L-天门冬酰胺酶催化缓冲液中天冬酰胺的反应过程,考察了底物浓度、给酶量、温度、搅拌速率等条件对固定化酶在缓冲液中间歇催化反应过程的影响;以及底物浓度、流量、温度、床层高度等因素对固定化酶在缓冲液中连续催化反应过程的影响。实验结果表明:在适当的反应条件下,聚乙二醇改性壳聚糖固定化L-天门冬酰胺酶可以很好地水解缓冲液中的天冬酰胺。
Reaction properties of L-asparaginase immobilized on chitosan modified with polyethylene glycol were studied in this paper. The effects of substrate concentration, quantity of immobilized L-as-paraginase, temperature, rotation rate on the batch reaction were investigated. Effects of substrate concentration, volume rate, temperature, height of enzyme column on the continuous reaction were investigated. The results show that under the proper conditions the immobilized L-asparaginase has good properties for hydrating asparagine from buffer.