Green tea is a product obtained from the processing of fresh leaves of Camellia sinensis (L.) O. Kuntze species. In this study, the influence of climatic parameters on the chemical composition of green tea cultivars ('Yabukita' and 'Yutakamidori') over the harvest was evaluated using HR-MAS NMR. 'Yabukita' showed higher concentrations of epicatechin while higher amounts of theanine and caffeine were found in 'Yutakamidori'. The decline of theanine was associated with high average maximum temperature and solar radiation index, this latter also seemed to be responsible for relevant changes in epicatechin concentrations. It was not possible to associate any trend between climatic parameters and caffeine concentration. Fluctuations in linolenic acid concentration were monitored during the harvest period and were associated with the plant's defense mechanism. Monitoring of green tea over seasons and correlating the fluctuations of compounds to climatic parameters might become an efficient strategy for establishing quality standards for green teas.

绿茶是用茶树鲜叶加工而成的产品(L.) O. Kuntze 物种。在这项研究中，使用 HR-MAS NMR 评估了气候参数对绿茶品种（'Yabukita' 和 'Yutakamidori'）在收获期化学成分的影响。'Yabukita' 显示出更高浓度的表儿茶素，而 'Yutakamidori' 中发现了更高含量的茶氨酸和咖啡因。茶氨酸的下降与较高的平均最高温度和太阳辐射指数有关，后者似乎也是表儿茶素浓度相关变化的原因。不可能将气候参数和咖啡因浓度之间的任何趋势联系起来。在收获期间监测亚麻酸浓度的波动，并将其与植物的防御机制相关联。