Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (34): 142-147.doi: 10.11924/j.issn.1000-6850.casb20200100066

Special Issue: 园艺

Previous Articles     Next Articles

The Quality of ‘Zijuan’ Tea Under Different Processing Techniques: A Comparative Analysis

Shi Hongdi1(), Wang Bangzheng1, Li Qian1, Wang Kang1, Fan Shuchen1, Liu Lin1, Wang Leguan2, Liu Dandan1()   

  1. 1School of Agriculture, Yunnan University, Kunming 650091
    2Yunnan Pu’er Tianfu Biotechnological Development Co., Ltd., Pu’er Yunnan 665000;
  • Received:2020-01-20 Revised:2020-03-22 Online:2020-12-05 Published:2020-12-15
  • Contact: Liu Dandan E-mail:shihongdi1002@163.com;liudandan@ynu.edu.cn

Abstract:

To study the effect of different processing techniques on the quality of ‘Zijuan’ tea, we tried to make five kinds of ‘Zijuan’ tea samples by taking fresh leaves of ‘Zijuan’ as raw materials and adopting the processing techniques of baked green tea, sundried green tea, black tea, white tea and dark tea, and tested the contents of main quality-related chemical constituents and made a systematic analysis. The results showed that different processing techniques could make the contents of chemical constituents significantly different in the tea samples that were made from the fresh leaves of the same variety of ‘Zijuan’. The content of anthocyanin in the baked green tea was the highest, followed by that in the sundried green tea. With the advancing of fermentation, the content of tea polyphenol and catechin declined. Additionally, the dark tea had the highest content of gallic acid among all the tea samples, the white tea had the highest content of theanine, while black tea had the highest caffeine. Therefore, different processing techniques have significant influence on the contents of main quality-related chemical constituents of ‘Zijuan’ tea, and the content of polyphenols in the baked green tea is the most abundant.

Key words: tea, ‘Zijuan’, processing techniques, quality, chemical constituents

CLC Number: