食品科学 ›› 2014, Vol. 35 ›› Issue (6): 146-151.doi: 10.7506/spkx1002-6630-201406031

• 分析检测 • 上一篇    下一篇

四川直条形乌龙茶加工过程中品质成分变化

杨 清1,蒋 丹1,刘庆玲1,董燕灵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.国家茶叶产品质量监督检验中心(四川),四川 雅安 625014
  • 收稿日期:2013-05-30 修回日期:2014-03-13 出版日期:2014-03-25 发布日期:2014-04-04
  • 通讯作者: 杜 晓 E-mail:541865061@qq.com
  • 基金资助:

    四川科技厅茶叶现代产业链关键技术研究与集成示范项目(2009NZ0015)

Variations in Quality-Related Components during the Manufacturing Process of Bar-Type Sichuan Oolong Tea

YANG Qing1, JIANG Dan1, LIU Qing-ling1, DONG Yan-ling1, DU Xiao1,2,*   

  1. 1. R&D Center, National Tea Inspection Center (Sichuan), Sichuan Agricultural University, Ya’an 625014, China;
    2. Center of Tea Quality Supervision and Inspection of State (Sichuan), Ya’an 625014, China
  • Received:2013-05-30 Revised:2014-03-13 Online:2014-03-25 Published:2014-04-04
  • Contact: DU Xiao E-mail:541865061@qq.com

摘要:

通过对直条形四川乌龙茶加工过程中各工序茶样的主要品质成分含量的分析测定,确定其加工工艺参 数,优化加工工艺。结果表明,随着制作工艺递进,茶叶的含水率递减,晒青及做青步骤失水最低,仅4.61%及 4.07%,其他工序失水均较高;鲜叶制成乌龙茶后,儿茶素、叶绿素总量、茶多酚、可溶性糖、游离氨基酸含量分 别降低了88.63 mg/g(相对比例)、3.03%、15.94%、1.66%、0.20%;而茶黄素、茶红素和茶褐素含量较鲜叶分别 升高了2.91%、1.38%、0.74%。分析表明,做青和初炒工序是整个直条形四川乌龙茶加工过程中部分内含物变化最 显著的环节,鲜叶水分含量的变化规律也验证了关于做青过程中保持水分适度的传统经验。

关键词: 四川直条形乌龙茶, 加工过程, 成分变化

Abstract:

The present study investigated the changes in quality-related components during the manufacturing process
of bar type Sichuan oolong tea. The results showed that the water content in Sichuan oolong tea decreased during the
manufacturing process, by the smallest percentage at the sunshine withering and green-making stages, only 4.61% and 4.07%,
respectively. From leaves to crude products, the contents of catechin, chlorophyll, tea polyphenols, soluble sugar and free
amino acids were reduced by 88.63 mg/g, 3.03%, 15.94%, 1.66% and 0.20%, respectively, while the contents of TFs, TRs
and TBs were increased by 2.91%, 1.38% and 0.74%, respectively. Our analyses indicated that both the green-making and
initial frying stages could result in the most marked changes in some quality-related components of Sichuan oolong tea.
Moreover, the changes in water content in the fresh tea leaves support the necessity of maintaining appropriate water content
during the traditional green-making procedure.

Key words: Sichuan oolong tea, processing, variations in biochemical component

中图分类号: