Phenolic content in tea green tea. Catechins constitute about 25% of the dry mass of a fresh tea leaf, although total catechin content varies widely depending on species, clonal variation, growing location, season, light variation, and altitude. They are present in nearly all teas made from "Camellia sinensis", including white tea, green tea, black tea and oolong tea. Of all the catechins in tea, EGCG is the main subject of scientific study with regard to its potential health effects. 4-Hydroxybenzoic acid, 3,4-dihydroxybenzoic acid (protocatechuic acid), 3-methoxy-4-hydroxy-hippuric acid and 3-methoxy-4-hydroxybenzoic acid (vanillic acid) are the main catechins metabolites found in humans after consumption of green
Taiwanese tea Taiwan Tea TTES #18 is a cultivar developed by the Taiwan Tea Research and Experiment Station during the 1990s. The now popular tea is a hybrid of "Camellia sinensis" v. assamica and a native variety ("Camellia sinensis forma formosensis"), and is said to have notes of Honey, cinnamon, and mint. The tea's natural sweetness is a result of the fostered relationship with insects. The native Leafhopper (Jacobiasca formosana) spends its time throughout the growing season laying eggs and biting the tea plant, which causes the plant to produce two compounds, monoterpene diol and hotrienol. This defense mechanism, intended to attract