欢迎访问《茶叶科学》,今天是

茶叶科学 ›› 2013, Vol. 33 ›› Issue (5): 405-410.doi: 10.13305/j.cnki.jts.2013.05.001

• • 上一篇    下一篇

茶叶中有机酸及其浸出特性研究

刘盼盼1,2, 钟小玉1,3, 许勇泉1, 陈根生1, 尹军峰1,*, 刘平1,2   

  1. 1. 中国农业科学院茶叶研究所,国家茶产业工程技术研究中心,浙江 杭州 310008;
    2. 中国农业科学院研究生院,北京 100081;
    3. 浙江茗皇天然食品开发有限公司,浙江 龙游 324404
  • 收稿日期:2013-01-21 修回日期:2013-02-25 出版日期:2013-10-30 发布日期:2019-09-04
  • 通讯作者: *yinjf@mail.tricaas.com
  • 作者简介:刘盼盼(1988— ),男,河南洛阳人,硕士研究生,主要从事茶叶深加工研究。
  • 基金资助:
    浙江省自然科学基金(R3090394)、国家自然科学基金(31070615)、国家青年基金(31101248)

Study on Organic Acids Contents in Tea Leaves and its Extracting Characteristics

LIU Pan-pan1,2, ZHONG Xiao-yu1,3, XU Yong-quan1   

  1. 1. Tea Research Institute, Chinese Academy of Agricultural Sciences, Engineering Research Center for Tea Processing, Hangzhou 310008, China;
    2. Graduate school of Chinese academy of agricultural sciences, Beijing 100081, China;
    3. ZheJiang Minghuang Natural Products Development Co. Ltd., Longyou 324404, China
  • Received:2013-01-21 Revised:2013-02-25 Online:2013-10-30 Published:2019-09-04

摘要: 研究了不同叶位、不同品种和不同茶类茶叶中有机酸的含量,以及不同冲泡时间、冲泡温度和pH条件下有机酸的浸出特性。结果表明:有机酸中奎尼酸、苹果酸、柠檬酸和草酸的含量要高于酒石酸和L-抗坏血酸的含量,有机酸总量随着鲜叶嫩度的下降而减少,其中草酸的含量下降明显,第4叶的含量仅为一芽一叶的49.5℅;不同茶叶品种对有机酸含量有较大影响,福鼎种的含量最低,黄金桂的含量最高;不同茶类间茶叶有机酸含量变化显著,依次为:红茶>乌龙茶>绿茶>普洱茶;另外有机酸的浸出随着冲泡温度的提高和冲泡时间的延长而增加,但随着pH值的提高却呈减少趋势。

关键词: 茶叶, 有机酸, 浸出特性

Abstract: The effects of different leaf position, different tea cultivars, different tea kinds on the content and extracting characteristics of organic acids in tea under different brewing time, brewing temperature and pH were systematic analyzed. The results showed that quinic acid, malic acid, citric acid and oxalic acid content in organic acids were higher than tartaric acid and L-ascorbic acid. With the declining of tea tenderness, the content of total organic acids decreased, including oxalic acid content decreased significantly, the content of the fourth leaf was 49.5% of that in one bud a leaf. The different tea cultivars had great effect on the organic acids content. The lowest organic acids content was Fuding cultivar and the highest was Huangjingui cultivar. The organic acid content in different kinds of tea changes significantly, with descending order of black tea > Oolong tea > green tea> pu-erh tea. With the increasing of brewing temperature and time, the extracting content of organic acids increased. But there was a decreasing tendency in the extracting content of organic acids with the increasing of the pH value.

Key words: tea leaves, organic acids, extracting characteristics

中图分类号: