Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (17): 82-89.doi: 10.11924/j.issn.1000-6850.casb2021-0644

Special Issue: 生物技术 园艺

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Study on the Quality of Yunnan White Tea

HE Mingzhu(), LI Jinqiu, WAN Renyuan, YUAN Yuwei, ZHOU Dapeng, YANG Guangrong()   

  1. College of Tea, Yunnan Agricultural University, Kunming 650201
  • Received:2021-06-26 Revised:2021-08-30 Online:2022-06-15 Published:2022-07-08
  • Contact: YANG Guangrong E-mail:1160041203@qq.com;2452739538@qq.com

Abstract:

White tea is one of the six kinds of tea in China, and it is loved by consumers for its unique processing technology, sweet and fresh sensory quality and health care effect. To understand the quality status and characteristics of Yunnan white tea, in this study, six samples of Yunnan white tea made of the fresh leaves of Yunnan local tea varieties and through local processing methods and six samples of traditional Fujian Zhenghe white tea were selected as the research objects. The water content, water extracts, free amino acids, tea polyphenols and caffeine were determined and the sensory evaluation was conducted. The differences of biochemical composition and sensory quality between Yunnan white tea and Zhenghe white tea were analyzed and compared. The results show that the average content of polyphenols, amino acids and caffeine in Yunnan white tea are 30.83%, 5.00% and 4.87%, respectively, and those of Zhenghe white tea are 29.76%, 7.22% and 5.02%, respectively; from the sensory evaluation, Yunnan white tea is sweet and refreshing, Zhenghe white tea is sweet and smooth. The appearance of Zhenghe white tea is better than that of Yunnan white tea. There are relatively big differences between Yunnan white tea and Zhenghe white tea in terms of biochemical composition and sensory quality.

Key words: Yunnan white tea, Zhenghe white tea, sensory quality, biochemical composition

CLC Number: