食品科学 ›› 2013, Vol. 34 ›› Issue (9): 74-79.doi: 10.7506/spkx1002-6630-201309017

• 基础研究 • 上一篇    下一篇

雅安藏茶抑制α-淀粉酶的活性级分筛选与评价

聂坤伦1,2,何 利3,速晓娟1,2,边金霖1,2,郭金龙1,杜 晓1,2,*   

  1. 1.四川农业大学 国家茶检中心(四川)研发中心,四川 雅安 625014;2.国家茶叶质量检验中心(四川筹),
    四川 雅安 625014;3.四川农业大学食品学院,四川 雅安 625014
  • 收稿日期:2012-11-12 修回日期:2013-04-07 出版日期:2013-05-15 发布日期:2013-05-07
  • 通讯作者: 杜 晓 E-mail:duxiao@vip.163.com
  • 基金资助:

    国家211工程建设四川农业大学“双支”计划项目(06370101)

Screening and Evaluation of α-Amylase-inhibiting Fractions Extracted from Ya’an Tibetan Tea

NIE Kun-lun1,2,HE Li3,SU Xiao-juan1,2,BIAN Jin-lin1,2,GUO Jin-long1,DU Xiao1,2,*   

  1. 1. R&D Center, National Tea Inspection Center (Sichuan), Sichuan Agricultural University, Ya’an 625014, China;
    2. National Tea Quality Inspection Center (Sichuan), Ya’an 625014, China;
    3. College of Food Science, Sichuan Agricultural University, Ya’an 625014, China
  • Received:2012-11-12 Revised:2013-04-07 Online:2013-05-15 Published:2013-05-07
  • Contact: Du-Xiao E-mail:duxiao@vip.163.com

摘要:

以雅安藏茶为材料,用体积分数70%乙醇溶液提取后经系统萃取分离得到7种雅安藏茶级分,并测定各个级分的主要成分及对α-淀粉酶活性的影响,筛选其活性成分。结果表明:雅安藏茶抑制α-淀粉酶的活性成分是儿茶素、茶褐素和咖啡碱,以对α-淀粉酶活性的最大抑制率为标准,各个活性成分抑制能力依次为儿茶素>茶褐素>咖啡碱。

关键词: 雅安藏茶;雅安藏茶级分;活性级分筛选;&alpha, -淀粉酶活性;抑制作用

Abstract:

Seven kinds of Ya’an Tibetan tea fractions were separated by liquid-liquid extraction by using 70% ethanol.
Major components of Ya’an Tibetan tea were analyzed. Furthermore, the inhibitory activity of the fractions on α-amylase
and corresponding active sites were determined. The results showed that the activity of α-amylase could be inhibited by
catechins, caffeine and TBs in Ya’an Tibetan tea. The decreasing order of the inhibitory activity of Ya’an Tibetan tea extract
fractions on α-amylase was catechin > TBs > caffeine.

Key words: Ya&rsquo, an Tibetan tea;Ya&rsquo, an Tibetan tea fraction;screening of active fraction;&alpha, -amylase;inhibition

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