Molecular Link in Flavonoid and Amino Acid Biosynthesis Contributes to the Flavor of Changqing Tea in Different Seasons
文献类型： 外文期刊
作者： Ma, Qingping 1 ; Qin, Mengyao 1 ; Song, Laichao 1 ; Sun, Haiwei 2 ; Zhang, Hong 2 ; Wu, Huanhuan 2 ; Ren, Zhihong 2 ; Liu, Hui 3 ; Duan, Gang 3 ; Wang, Yu 4 ; Ding, Zhaotang 5 ;
作者机构： 1.Liaocheng Univ, Coll Agron, Liaocheng 252000, Shandong, Peoples R China
2.Taian Acad Agr Sci, Tai An 271000, Shandong, Peoples R China
3.Jinan Bur Agr & Rural Areas, Jinan 271100, Peoples R China
4.Qingdao Agr Univ, Coll Hort, Qingdao 266109, Peoples R China
5.Shandong Acad Agr Sci, Tea Res Inst, Rizhao 276800, Peoples R China
关键词： Changqing tea; catechins; amino acids; flavonoid biosynthesis; metabolism
期刊名称：FOODS （ 影响因子：5.561； 五年影响因子：5.94 ）
ISSN：
年卷期： 2022 年 11 卷 15 期
页码：
收录情况： SCI
摘要： The present study was aimed to elucidate the flavor formation mechanism of Changqing tea. High-performance liquid chromatography (HPLC) analysis showed that the total catechins of Changqing tea was 65-160 mg/g, with 16-34 mg/g non-galloyated catechins and 49-126 mg/g gal-loylated catechins. Tea polyphenols and free amino acids account for 286-312 mg/g and 35-89 mg/g, respectively. Transcriptome of Changqing tea during different seasons revealed 316,130 and 12 DEGs in comparisons of spring vs. autumn, spring vs. summer, and summer vs. autumn, respectively. Compared to spring, the genes involved in flavonoid biosynthesis and bitter imparted amino acids were up-regulated in summer and autumn. Metabolome analysis was conducted by using HPLC-MS; the result indicated that umami and kokumi contributing amino acids were decreased in summer and autumn compared with spring. It could be concluded that the coordination of flavonoid biosynthesis and amino acids biosynthesis resulted in the special flavor of Changqing tea.
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