Comprehensive investigation on the flavor difference in five types of tea from JMD ( Camellia sinensis ‘Jinmudan’)

作者：Meng‐Ting Tang, Xiansheng Liao, Mengting Xu, Jianming Zhang, Xianshou Wu, Mingxiu Wei, Shan Jin, Yucheng Zheng, Naixing Ye · 发表于：Journal of the Science of Food and Agriculture · 年份：2024 · DOI：10.1002/jsfa.13890 · 被引用次数：6 · 研究领域：Tea Polyphenols and Effects、Sensory Analysis and Statistical Methods、Heavy Metals in Plants

BACKGROUND: Jinmudan (JMD) is a high-aroma variety widely cultivated in China. The current study primarily focuses on the key volatile metabolites in JMD black and oolong teas, and investigates the impact of processing technologies on the aroma quality of JMD tea. However, few studies have explored the suitability of JMD for producing a certain type of tea or the characteristic quality differences among various JMD teas using multivariate statistical analysis methods. RESULTS: The principal volatile metabolites contributing to the floral quality of JMD tea are linalool, geraniol, indole and phenethyl alcohol. In JMD black tea (BT), the key volatile metabolites include methyl salicylate, geraniol, (E)-β-ocimene and phenethyl alcohol. In JMD oolong tea (OT), the key volatile metabolites include indole, linalyl valerate and phenethyl alcohol. In JMD yellow tea (YT), the key volatile metabolites include methyl salicylate, geraniol and terpinolene. In JMD white tea (WT), the key volatile metabolites include methyl salicylate, geraniol and terpinolene. In JMD green tea (GT), the key volatile metabolites include (E)-β-ocimene, indole and geraniol. Comparative analysis and KEGG pathway enrichment analysis revealed that flavonoid biosynthesis is the primary metabolic pathway responsible for the taste differences among various tea types. GT exhibited higher levels of phloretin, dihydromyricetin and galangin. The contents of vitexin, tricetin in YT were relatively higher. The contents o...