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林产化学与工业 ›› 2010, Vol. 30 ›› Issue (3): 6-12.

• 研究报告 • 上一篇    下一篇

松香基功能高分子金属离子配合物固定化淀粉酶

卢建芳, 雷福厚, 赵慷, 覃冬梅, 姚兴东   

  1. 广西民族大学 化学与生态工程学院, 广西 南宁 530006
  • 收稿日期:2009-10-12 修回日期:1900-01-01 出版日期:2010-06-30 发布日期:2010-06-30
  • 通讯作者: 雷福厚(1965- ),男(土家族),湖北恩施人,教授,博士,主要从事天然产物开发与应用研究;E-mail:leifuhou@163.com。

Immobilization of Amylase on Metal Complex of Rosin-based Functional Polymers

LU Jian-fang, LEI Fu-hou, ZHAO Kang, QIN Dong-mei, YAO Xing-dong   

  1. College of Chemistry and Ecological Engineering, Guangxi University for Nationalities, Nanning 530006, China
  • Received:2009-10-12 Revised:1900-01-01 Online:2010-06-30 Published:2010-06-30

摘要: 分别以聚马来松香己二醇酯、马来松香乙二醇丙烯酯聚合物和马来松香乙二醇丙烯酯-丙烯酸共聚物为载体,金属离子为桥键配位离子固定化淀粉酶。测定了固定化淀粉酶的性能,探讨了固定化酶反应机理。结果表明金属离子作为桥键配离子的固定化淀粉酶中,PMGAECa(Ⅱ)En和poly(MGAE-AA)Ca(Ⅱ)En效果较好,重复使用5次后,每5min的活性分别为11.33、9.44mg/g,相对保留活性为32.78%、37.59%,最适宜温度为60、50℃,最适宜pH值为6.03、5.00。

关键词: 松香基功能高分子, 固定化酶, 淀粉酶, 活性

Abstract: Immobilized amylases were prepared by using polymer of maleated rosin acid-hexandiol ester (PMHE), copolymer of maleated rosin acid-glycol-acrylic acid ester-acrylic acid and polymer of maleated rosin acid-glycol-acrylic acid ester (PMGAE) respectively as carriers and the method of metallic ion coordination. The performance of the immobilized enzyme was determined. The mechanism of immobilization was discussed. The result showed that PMGAECa(Ⅱ) and poly(MGAE-AA)Ca(Ⅱ) were the best carriers for immobilizing amylase among all carriers with metal ions as coordination bridge. Their activities were maintained at 11.33 and 9.44mg/g for per 5min and relative retention activities were 32.78% and 37.59%, respectively, after using five times. The optimal reaction conditions of starch oxidation catalyzed by the amylase immobilized on PMGAECa(Ⅱ) and poly(MGAE-AA)Ca(Ⅱ)were found to be as follows: reaction temperature 60℃(20℃ higher than that of free enzyme) and 50℃(10℃ higher than that of free enzyme), pH value 6.03 and 5.00, respectively.

Key words: rosin-based functional polymer, immobilized enzyme, amylase, activity

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