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Abstract：
Japanese matcha is a type of powdered green tea, grown in a traditional way. Shading of the plants during the growth period enhances the processes of synthesis and accumulation of biologically active compounds, including theanine, caffeine, chlorophyll and various types of catechins. Green tea contains four main catechins, i.e., (-)-epicatechin (EC), (-)-epicatechin-3-gallate (ECG), (-)-epigallocatechin (EGC) and (-)-epigallocatechin-3-gallate (EGCG), of which the latter is the most active and abundant and matcha is their best condensed source. Due to its unique chemical composition and prized flavour, which sets it apart from other tea beverages, it is considered the highest quality tea. Its health-promoting properties are attributed to the high content of antioxidant and anti-inflammatory substances. Studies confirming the high antioxidant potential of tea beverages claim that it originates from the considerable content of catechins, a type of phenolic compound with beneficial effects on human health. Due to its potential for preventing many diseases and supporting cognitive function, regular consumption of matcha may have a positive effect on both physical and mental health. The aim of this review was to compile the health benefits of matcha tea. It is the first such review to be undertaken, and presents its main bioactive compounds in a systematic manner.
摘要：
日本抹茶是一种粉状绿茶，以传统的方式成长。植物在生长期的阴影增强了生物活性化合物的合成和积累过程，包括茶氨酸,咖啡因,叶绿素和各种类型的儿茶素。绿茶含有四种主要的儿茶素，即，（-）-表儿茶素（EC），（-）-表儿茶素-3-没食子酸酯（ECG），（-）-表没食子儿茶素（EGC）和（-）-表没食子儿茶素-3-没食子酸酯（EGCG），其中后者是最活跃和丰富的，抹茶是他们最好的浓缩来源。由于其独特的化学成分和珍贵的风味，这使它与其他茶饮料区分开来，它被认为是最优质的茶。其促进健康的特性归因于抗氧化剂和抗炎物质的高含量。证实茶饮料具有高抗氧化潜力的研究声称，它源于相当含量的儿茶素，一种对人体健康有益的酚类化合物。由于其预防许多疾病和支持认知功能的潜力，经常食用抹茶可能对身心健康产生积极影响。这篇综述的目的是汇编抹茶的健康益处。这是第一次进行此类审查，并系统地介绍了其主要生物活性化合物。
