Sell Green Tea Extract

Green Tea Extract
Chemical definition: Polyphenols

Specification: Assay
(Tea polyphenols, By UV) 98% 95% 90% 50%
(Catechins, By HPLC) 80% 70% 60%
(EGCG, By HPLC) 45% 45% 40% 30%
(Caffeine, By HPLC) 2% 1% 1%

Structural formula:

Appearance: Light brown fine powder with characteristic odor

Identification: Passes all criteria tests

Assay method: The content of tea polyphenols is determined by UV and the content of Catechins, EGCG in the product is determined by HPLC.