Identification of epigallocatechin-3-O-methyl-gallate in a Korean tea cultivar

Epigallocatechin-3-O-methyl-gallate (or methylated catechin) is not as widely known as other catechins — components of tea. And this is not due to the fact that its name is more complicated. It is just less common — unlike other catechins, the methylated catechin is found only in the leaves of tea trees of certain varieties. At the same time, it seems that methylated catechin has a more pronounced antioxidant effect than ‘conventional’ catechins. And, in addition, it has an anti-allergic effect — that’s why advanced allergic people in Japan and beyond appreciate green teas made from Benifuuki cultivar, which contains the methylated catechin.

Another cultivar, which contains epigallocatechin-3-O-methyl-gallate, is Korean Jangwon No.3. This variety fell into hands of Korean researchers who compared it to three other cultivars: wild Korean tea, and Jangwon No.1 (this is an EGCG-rich cultivar) and Jangwon No.2 (a cultivar with a particularly intense taste).

From the table in the article under the link, it can be seen that fresh leaves of Jangwon No.3 not only contain methylated catechin in sufficient quantities (which was not found in Jangwon No.1 and No.2 and which is present in very small quantity in wild Korean tea). The amount of other catechins found in Jangwon No.3 is 20-30% higher than in the other cultivars, and the amount of caffeine 30-40% higher. At the same time, Jangwon No.3 is poorer (by 20-40%) in amino acids, including theanine and GABA.

So, it seems, that if you mix the leaves of Jangwon No.1 (which has the most amino acids) with leaves of Jangwon No.3 (having a lot of catechins, methylated catechin and caffeine), make green tea out of them and brew this mix strong, then youth, beauty, health, wealth and vigor will become inevitable.