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林业科学 ›› 2003, Vol. 39 ›› Issue (3): 45-47.doi: 10.11707/j.1001-7488.20030307

• 论文及研究报告 • 上一篇    下一篇

枣果实多酚氧化酶性质的研究

宗亦臣 王贵禧 冯双庆   

  1. 中国林业科学研究院林业研究所,北京100091;中国农业大学食品学院,北京100094
  • 收稿日期:2001-12-29 修回日期:1900-01-01 出版日期:2003-05-25 发布日期:2003-05-25

STUDY ON POLYPHENOL OXIDASE PROPERTY IN JUJUBE FRUITS

Zong Yichen,Wang Guixi,Feng Shuangqing   

  1. Research Institute of Forestry,CAF Beijing 100091;College of Food Science,China Agricultural University Beijing 100094
  • Received:2001-12-29 Revised:1900-01-01 Online:2003-05-25 Published:2003-05-25

摘要:

对冬枣和梨枣果实的多酚氧化酶(PPO)的性质进行了研究,分别就酚类物质、PPO的底物专一性、pH值与底物浓度对PPO活性的影响进行探讨。结果表明,2个枣品种的多酚氧化酶均有一个最适pH值,为7.0 ;冬枣PPO的最适天然底物是没食子酸,梨枣则是阿魏酸。

关键词: 枣果实, 多酚氧化酶, 酚类物质

Abstract:

The property of polyphenol oxidase (PPO) in two Jujube cultivars `Dongzao' and `Lizao' was studied, including phenols, specificity on substrates of PPO and effects of pH and concentration of substrate on PPO activity. It was showed that both Jujube cultivars had an optimum pH range,the value was 7.0 The optimum native substrate of PPO in `Dongzao' was gallate, and in `Lizao' was asafoetida acid.

Key words: Jujube fruit, Polyphenol oxidase, Phenols