Specification: tea polyphenols 30%-99% catechins 15% EGCG 10-95% caffeine 0.5 95% 15%
detective method: HPLC, UV
botanical name: Camellia sinensis O. Ktze
about the green tea extract:
Green tea extracts are derived from herbal green tea leaves (Camellia sinensis). Containing antioxidant ingredients - mainly of green tea catechins (GTC) - green tea and its derivatives are found among people who pursue health.
Because of the high antioxidant activity of extracts of green tea, they should if all goes well be used as a kind of additive innovative to keep pork, chicken oil and vegetable, fish oil and fish, food emulsions and animal fat [1: 144]. This alternative antioxidant is suggested to be a healthier choice; a fairly successful example may well be the application in moon cake - the extracts increased shelf life and improve the flavor [1: 144].
In addition, green tea extracts are a promising solution to prevent Apple juice and other foods of microbial contamination [1: 144]. Japanese scientists even have discovered that tea extracts can be developed as dyes which are not susceptible to microbial contamination and possess strong deodorant activity. [1: 145].
Function:
Green tea extract supplements are available over the counter in various forms [6]. The standardized green tea extract is 90 percent total polyphenols, and 1 capsule equals 5 cups of tea [8] [9]. For a green tea extract standardized to the polyphenols and 55 percent EGCG 80 per cent, a daily dose of 300 to 400 mg green tea extract is recommended [6]. A few extracts of green tea can have as little as 15 percent polyphenols, usually these are far cheaper. It should be kept in mind that the various components of raw green tea extracts have synergistic effects and are therefore better than any individual component of the [1: 139]. Scientists also concluded that tea extracts are best taken between meals in order to avoid the reduced absorption of iron.
