食品科学 ›› 2010, Vol. 31 ›› Issue (22): 500-503.doi: 10.7506/spkx1002-6630-201022113

• 技术应用 • 上一篇    下一篇

柔性固定化木瓜蛋白酶的制备及在酶解波纹巴非蛤中的应用

陈 忻1,张俊敏1,孙恢礼2,杜健海1,袁毅桦1,陈智刚3   

  1. 1.佛山科学技术学院化学与化工系
    2.中国科学院南海海洋研究所 3.安安美容保健品有限公司
  • 收稿日期:2010-06-22 修回日期:2010-10-02 出版日期:2010-11-25 发布日期:2010-12-29
  • 通讯作者: 陈忻 E-mail:fschenxin@tom.com
  • 基金资助:

    “十一五”国家科技支撑计划项目(2008BAD94B08);中国科学院知识创新工程重要方向项目(KZCX2-YW-209);
    广东省 2009 中国科学院- 广东省合作项目(00617381220824077)

Preparation of Flexible Immobilized Papain

CHEN Xin1,ZHANG Jun-min1,SUN Hui-li2,DU Jian-hai1,YUAN Yi-hua1,CHEN Zhi-gang3   

  1. 1. Department of Chemistry and Chemical Engineering, Foshan University, Foshan 528000, China;
    2. South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;
    3. Foshan Anan Beauty and Health Products Co. Ltd., Foshan 528000, China
  • Received:2010-06-22 Revised:2010-10-02 Online:2010-11-25 Published:2010-12-29
  • Contact: CHEN Xin E-mail:fschenxin@tom.com

摘要:

在壳聚糖膜的表面接上分子链较长的双醛淀粉作为柔性固定化酶的载体,将木瓜蛋白酶固定在该载体上制成柔性固定化木瓜蛋白酶,并应用于酶解波纹巴非蛤制备小分子肽。通过考察温度、pH 值、加酶量和固定化时间等条件对柔性固定化木瓜蛋白酶的酶活、酶活回收率的影响,确定最优固定化条件。结果表明:双醛淀粉用量0.8mg/g 壳聚糖、柔性固定化酶温度25℃、柔性固定化酶时间20h、加酶量40mg/g 壳聚糖、pH8.0 条件下所得的固定化酶酶活最高,酶活回收率63.35%。将该柔性固定化酶在酶解温度40℃、pH7.0、加酶量1.0%、酶解时间4h条件下制备波纹巴非蛤小分子肽,产率为3.4055%。

关键词: 壳聚糖, 双醛淀粉, 固定化酶

Abstract:

Long-chain dialdehyde starch was linked to the surface of chitosan membrane to obtain an immobilization carrier for enzyme. Flexible immobilized papain was prepared through fixing papain on the carrier and applied to prepare small molecule peptide by hydrolyzing aphia undulate. The optimal immobilization conditions were explored by evaluating the effect of immobilization temperature, pH, enzyme amount and immobilization time on enzyme activity and recovery rate of flexible immobilized papain. Results indicated that the optimal immobilization conditions were reaction temperature of 25 ℃, reaction time of 20 h, enzyme amount of 40 mg/g, and pH 8.0. Under the optimal immobilization conditions, the obtained immobilized papain exhibited the highest activity and the recovery rate of papain was 63.35%.

Key words: chitosan, dialdehyde starch, immobilized enzyme

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