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J Agric Food Chem

Title:		Elucidation of ( Z)-3-Hexenyl-beta-glucopyranoside Enhancement Mechanism under Stresses from the Oolong Tea Manufacturing Process
Author(s):		Zeng L; Wang X; Xiao Y; Gu D; Liao Y; Xu X; Jia Y; Deng R; Song C; Yang Z;
Address:		"Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany , South China Botanical Garden, Chinese Academy of Sciences , No. 723 Xingke Road, Tianhe District , Guangzhou 510650 , China. College of Advanced Agricultural Sciences , University of Chinese Academy of Sciences , No.19A Yuquan Road , Beijing 100049 , China. State Key Laboratory of Tea Plant Biology and Utilization , Anhui Agricultural University , No. 130 Changjiang West , Hefei 230036 , China"
Journal Title:		J Agric Food Chem
Year:		2019
Volume:		20190603
Issue:		23
Page Number:		6541 - 6550
DOI:		10.1021/acs.jafc.9b02228
ISSN/ISBN:		1520-5118 (Electronic) 0021-8561 (Linking)
Abstract:		"The enzymatic hydrolysis of glycosidically bound volatiles (GBVs) plays an important role in tea aroma formation during the tea manufacturing process. However, during the enzyme-active manufacturing process of oolong tea, most GBVs showed no reduction, while ( Z)-3-hexenyl-beta-glucopyranoside significantly enhanced at the turnover stage. This study aimed to determine the reason for this increase in ( Z)-3-hexenyl-beta-glucopyranoside. Continuous wounding stress in the turnover stage did not enhance the expression level of glycosyltransferase 1 ( CsGT1), while it induced a significant increase in the ( Z)-3-hexenol content ( p
Keywords:		"Camellia sinensis/*chemistry/enzymology/genetics/physiology Food Handling/*methods Glucosides/*analysis Glycosyltransferases/genetics/metabolism Plant Leaves/chemistry/physiology Plant Proteins/genetics/metabolism Stress, Physiological Volatile Organic Co;"
Notes:		"MedlineZeng, Lanting Wang, Xiaoqin Xiao, Yangyang Gu, Dachuan Liao, Yinyin Xu, Xinlan Jia, Yongxia Deng, Rufang Song, Chuankui Yang, Ziyin eng Evaluation Study 2019/05/28 J Agric Food Chem. 2019 Jun 12; 67(23):6541-6550. doi: 10.1021/acs.jafc.9b02228. Epub 2019 Jun 3"