tea polyphneols

Tea Polyphenols Tea Polyphenol is a kind of pure natural polyphenol substance abstracted from tea leaf. The main component is catechin (belongs to flavanol class) accounting for 60%-80% of the total amount of polyphenol. Catechin is comprised of EGCGECGEGCECD,L-C. Catechin polymer has strong abilities of anti-oxidation and eliminating free radicals because it contains polyphenol hydroxy.Stability: PH4-8 stable, and the quality changes with alkali, strong acid, light, high temperature.Safety evaluation: innocuous Perception index: 1. Appearance: usually light yellow or light yellow green powder solid. 2. Quality: its easy to dissolve in water or ethanol containing water and tastes bitter.Storage: stored at dry and cool place and avoids light. The shelf life is two years.Product specification TEA POLYPHENOLS 40%≥40%POLYPHENOLS ≥20%CATECHINS
tea polyphneols