食品科学 ›› 2009, Vol. 30 ›› Issue (1): 173-176.doi: 10.7506/spkx1002-6630-200901041

• 生物工程 • 上一篇    下一篇

莲藕多酚氧化酶的纯化方法研究

胡婉峰,赵洪雷,万琼红,李春美* ,陈美红   

  1. 华中农业大学食品科技学院
  • 收稿日期:2007-12-09 修回日期:2008-05-20 出版日期:2009-01-01 发布日期:2010-12-29
  • 通讯作者: 李春美 E-mail:lichmyl@mail.hzau.edu.cn
  • 基金资助:

    武汉市青年科技晨光计划项目(20065004116-24)

Purification of Polyphenol Oxidase from Lotus Roots

HU Wan-feng,ZHAO Hong-lei,WAN Qiong-hong,LI Chun-mei*,CHEN Mei-hong   

  1. (College of Food Science and Technology , Huazhong Agricultural University, Wuhan 430070, China)
  • Received:2007-12-09 Revised:2008-05-20 Online:2009-01-01 Published:2010-12-29
  • Contact: LI Chun-mei E-mail:lichmyl@mail.hzau.edu.cn

摘要:

研究了莲藕多酚氧化酶(PPO)的提取纯化。结果表明:莲藕多酚氧化酶采用30% 硫酸铵盐析除杂、80%硫酸铵沉淀、DEAE Sephadex A-50 柱层析、Sephadex G-75 柱层析四步进行分离纯化,所得纯化物经SDS-PAGE检验为均一单带,其分子量约为21kD,其纯化倍数和产率分别为103 倍和0.38%。

关键词: 莲藕, 多酚氧化酶, 纯化

Abstract:

The polyphenol oxidase (PPO) of lotus root was extracted and purified by four steps: ammonium sulfate fractionation with saturation 30% and 80%, and DEAE-Sephadex A-50 and Sephadex G-75 column chromatography in turn. SDS-PAGE analysis showed that the purified PPO is a single polypeptide with a molecular weight of about 21.0 kD. The final purification fold and the yield of PPO are 103 and 0.38 %, respectively.

Key words: lotus root, polyphenol oxidase, purification

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