catechins

الوصف

Green Tea Extract Tea polyhenols is a kind of natural compound extracted from the green tea, with *0 polyphenois variety. According to its chemical structure, it is classified into catechins, flavone and flavonol, anthocyanidin, phenolic acid and condensed phenolic acid. The content of catechins is the highest, reaching ****0% of tea polyphenols. Catechins is also divided into many variety. See the following list showing the ratio of catechins:
Item                Name of catechins         Short form    Ration in tea polyphenols

Non-ester           (+)catechin                D,L-C            0.*0
                    (-)epicatechin             L-EC             1.*0
                    (+)gallocatechin           D,L-GC           2.*0
                    (-)epigallocatechin        L-EGC            *2.*0

Ester casthins   (-)epicatechin gallate        L-ECG            *8.*0
                 (-)epigallocatechin gallate   L-EGCG           *8.*0