【Product Name】 Tea Polyphenols

【 English Name 】 Tea Polyphenol

【Product Name】Green Tea Extract Tea Extract

This product is extracted and refined from natural green tea.

【 Product Overview 】 Tea polyphenols are a general term for polyphenolic substances in tea, including flavanols, anthocyanins, flavonoids, flavonols, and phenolic acids. Mainly composed of flavanols (catechins), catechins account for 60-80%. Polyphenols, also known as tea tannins or tea tannins, are the main components that form the color, aroma, and functional components of tea leaves. Nicknames include vitamin polyphenols, green tea plant extracts, and tea essence.

【 CAS Number 】 84650-60-2

【 Molecular Formula 】 C17H19N3O

【 Molecular Weight 】 281.36

【Product Specifications】 Tea Polyphenols 1-98%; Catechin 1-98%; EGCG1-98%； Theanine 1-99%; Theaflavins 10% -80%, theaflavins 1-98%; Green tea extract 10:1 (powder, liquid) with complete specifications, please consult customer service for details;

【 Detection Method 】 HPLC

【 Appearance 】 Light brown powder

【 Detection steps 】 Principle: Polyphenols in the product can form purple blue complexes with ferrous ions. Measure its content using spectrophotometry. Preparation of test solution: Weigh 0.1g (accurate to 0.0001g) of the sample in a small beaker, dissolve and transfer to a 100ml volumetric flask, and dilute to the mark with distilled water. Measurement: Accurately extract 1ml of the above test solution, inject it into a 25ml volumetric flask, add 4ml of water and 5ml of ferrous tartrate solution, and mix thoroughly. Add pH 7.5 buffer solution to the mark, use a 10mm colorimetric dish, and measure the absorbance (A) at a wavelength of 540nm with the reagent blank solution as a reference. Result calculation: Tea polyphenol content (%)=A × 1.44 × 2 × 100/M% (where: M - mass of sample; A - absorbance of the sample)

【 Packaging Specifications 】 Standard packaging: 25kg/cardboard drum; Bulk cargo: 1kg/bag

【 Storage conditions 】 Sealed, cool, moisture-proof, and light proof

【 Shelf life 】 24 months

【Product Application】 Widely used in cosmetics, food and other fields