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
Iced tea Iced tea Iced tea (or ice tea;) is a form of cold tea. Though usually served in a glass with ice, it can refer to any tea that has been chilled or cooled. It may be sweetened with sugar, syrup and/or apple slices. Iced tea is also a popular packaged drink. It can be mixed with flavored syrup, with multiple common flavors including lemon, raspberry, lime, passion fruit, peach, orange, strawberry, and cherry. While most iced teas get their flavor from tea leaves ("Camellia sinensis"), herbal teas are sometimes served cold and referred to as iced tea. Iced tea is