Recent metabolomics studies have reported diverse metabolites of tea depending on tea (Camellia sinensis) cultivars, cultivation conditions and geographical location. However, these studies were limited the effects of these conditions on metabolome of tea leaves in a single year. We explored the year-to-year variations in leaf metabolome of two tea (C. sinensis) cultivars over a period of five successive years from 2015 to 2019 to determine vintage tea products, such as in grapes or wines, and showed a clear metabolic differentiations of fresh tea leaves. Also, the best conditions of climate were suggested through an association of rainfall and sun-expose time with the metabolism of theanine in taste- or flavor-rich tea cultivar and of catechin compounds in EGCG3″Me-rich tea cultivar, thereby providing the potential vintage tea tailored to the cultivar. Since vintage wine is derived from grapes grown in a year under good climatic conditions, which provides high quality of wine in the best year, the current result highlights important information relevant to tea metabolome associated with climatic conditions in a specific year and the manufacture of vintage tea with unique quality.

中文翻译：

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茶树 (Camellia sinensis L.) 年份效应的代谢证据

最近的代谢组学研究报道了茶的多种代谢物，具体取决于茶（Camellia sinensis）品种、种植条件和地理位置。然而，这些研究仅限于这些条件对茶叶一年内代谢组的影响。我们探索了 2015 年至 2019 年连续五年内两个茶 (C. sinensis) 品种叶片代谢组的逐年变化，以确定陈年茶产品，例如葡萄或葡萄酒中的茶产品，并显示出明显的代谢变化新鲜茶叶的区别。此外，通过降雨量和日照时间与风味丰富的茶品种中茶氨酸的代谢以及富含EGCG3“Me的茶品种中儿茶素化合物的代谢的关联，建议了最佳气候条件，从而提供了潜力根据品种量身定制的复古茶。由于年份酒源自气候条件良好的一年中生长的葡萄，在最好的年份提供高品质的葡萄酒，当前的结果强调了与特定年份的气候条件和年份酒的生产相关的茶代谢组的重要信息。茶品质独特。