食品科学 ›› 2010, Vol. 31 ›› Issue (19): 241-244.doi: 10.7506/spkx1002-6630-201019052

• 生物工程 • 上一篇    下一篇

蜂蜜中β-葡萄糖苷酶活性测定及来源分析

易松强,郑火青,张翠平,魏文挺,胡福良*   

  1. 浙江大学动物科学学院
  • 收稿日期:2009-11-24 修回日期:2010-06-10 出版日期:2010-10-15 发布日期:2010-12-29
  • 通讯作者: 胡福良 E-mail:flhu@zju.edu.cn
  • 基金资助:

    国家现代农业(蜂)产业技术体系建设专项(NYCYTX-43)

Determination ofβ -Glucosidase Activity and Source in Honey

YI Song-qiang,ZHENG Huo-qing,ZHANG Cui-ping,WEI Wen-ting,HU Fu-liang*   

  1. College of Animal Sciences, Zhejiang University, Hangzhou 310029, China
  • Received:2009-11-24 Revised:2010-06-10 Online:2010-10-15 Published:2010-12-29
  • Contact: HU Fu-liang E-mail:flhu@zju.edu.cn

摘要:

以对硝基苯基β-D- 葡萄糖苷(pNPG)为底物,对蜂蜜中β- 葡萄糖苷酶活性测定条件进行研究。结果表明:蜂蜜中β- 葡萄糖苷酶活性测定的最佳条件为以柠檬酸- 磷酸氢二钠缓冲液为提取液,pH5.0,温度60℃,底物浓度30mmol/L。酶促反应在2.5h 和37℃时酶促反应曲线线性关系最好。研究还发现,β- 葡萄糖苷酶可能是蜜蜂在采集加工过程中加入进去的,同时,该酶活性还可能与蜂蜜的新鲜度相关。

关键词: 蜂蜜, β-葡萄糖苷酶, 酶活性, 来源

Abstract:

The determination conditions of β-glucosidase activity in honey were investigated by using p-Nitrophany β-DGluopyranoside (pNPG) as substrate. The optimal reaction pH and temperature of β-glucosidase were 5.0 and 60 ℃, respectively. The enzymatic reaction curve at 37 ℃ and a substrate concentration of 30 mmol/L presented the best  inearity. This enzyme may be added into honey during harvest and processing and its activity can be an indicator for the freshness of honey.

Key words: honey, β-glucosidase, enzyme activity, source

中图分类号: