Identification and analysis of specialized metabolites, including 1,2-Di-O-Galloyl-(4,6-(S)-Hexahydroxydiphenoyl)-β-D-Glucopyranose, in ancient tea plants from Yunnan, China
文献类型： 外文期刊
作者： Wang, Yueqi 1 ; Wang, Liyuan 1 ; He, Mengdi 1 ; Wang, Liubin 1 ; Wu, Liyun 1 ; Mao, Zhuozhuo 1 ; Wang, Yongxin 1 ; Li, Qiang 1 ; Wei, Kang 1 ;
作者机构： 1.Chinese Acad Agr Sci, Tea Res Inst, Breeding Special Econ Anim & Plants, Minist Agr & Rural Affairs, Hangzhou 310008, Peoples R China
关键词： 1,2-Di-O-Galloyl-(4,6-(S)-hexahydroxydiphenoyl)-beta-D-glucopyranose; Ancient tea plants; Metabolites; Camellia sinensis; UPLC-qTOF-MS/MS; 5-O-galloylquinic acid
期刊名称：FOOD CHEMISTRY （ 影响因子：9.8； 五年影响因子：9.7 ）
ISSN： 0308-8146
年卷期： 2025 年 488 卷
页码：
收录情况： SCI
摘要： Ancient tea plants over 100 years old are valuable sources of unique-taste-imparting metabolites sought after in the tea market. Understanding the metabolite profiles of ancient tea plants can reveal novel compounds with potential health benefits and inform breeding programs for improved tea quality. We investigated 26 ancient tea plants from four natural villages in Lancang river area, Yunnan province, China, tree' age was estimated based on trunk diameter (>20 cm) and local knowledge. UPLC-qTOF-MS/MS analysis identified two special compounds, 1,2-di-O-galloyl-(4,6-(S)-hexahydroxydiphenoyl)-beta-d-glucopyranose (GHG) and 5-O-galloylquinic acid. Significant differences existed between the metabolic profiles of ancient tea plants, among which GHG was highly accumulated in some of them (peak contents (228.28 mg/g) being 2.61x higher than previously reported). GHG also negatively correlated with ester catechins and 1,2,6-tri-O-galloyl-beta-d-glucopyranose. We identify various ancient tea germplasms with high levels of GHG that may be highly valuable for the development of new tea beverages and functional foods.
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