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[10] [11] Tea has one of the highest contents of flavonoids among common food and beverage products. [7] Catechins are the largest type of flavonoids in growing tea leaves. [ 6 ] According to a report released by USDA, in a 200-ml cup of tea, the mean total content of flavonoids is 266.68 mg for green tea , and 233.12 mg for black tea .
It is found in high content in the dried leaves of green tea (7380 mg per 100 g), white tea (4245 mg per 100 g), and in smaller quantities, black tea (936 mg per 100 g). [2] During black tea production, the catechins are mostly converted to theaflavins and thearubigins via polyphenol oxidases .
Epigallocatechin and gallocatechin contain an additional phenolic hydroxyl group when compared to epicatechin and catechin, respectively, similar to the difference in pyrogallol compared to pyrocatechol. Catechin gallates are gallic acid esters of the catechins; an example is epigallocatechin gallate, which is commonly the most abundant ...
Kukicha (also known as bōcha or 'twig tea') is made primarily from the twigs and stems of the tea plant rather than the leaves alone. [4] Hōjicha infusions have a light- to reddish-brown appearance and are less astringent. The lower levels of astringency in hōjicha are due to the tea losing catechins during the high-temperature roasting process.
Green tea’s health benefits. Green tea has one of the highest levels of antioxidants of any tea, as well as polyphenols, which could bring various health benefits, including:
"Green tea contains antioxidants called catechins that boost the natural cleansing functions of the liver and actually may help reduce viral activity in hepatitis C," says Minchen. "Matcha green ...
GABA tea (other names: Gabaron, Jia Wu Long cha, Jing Bai Long cha, 佳叶龙茶) is tea that has undergone a special processing which leads to high accumulation of GABA (the chief inhibitory neurotransmitter in the central nervous system) in the tea leaves.
There’s a particular type of antioxidant called catechins in green tea that sets it apart from the other varieties. Catechins are able to neutralize free radicals, which cause damage to our body ...