Polyphenols have more than 5,000 kinds. For example, "catechin" contained in tea, "rutin" of soba, "isoflavone" of soybean, etc. are also polyphenols, which are collectively called polyphenols.
Polyphenols refer to bitterness, astringent and pigments for plants photosynthesis. Polyphenols have functions producing cells, activating and dividing cells and detoxify harmful substances from the outside.
Polyphenols are resistant for heat and breakage, but they are very oxidizable and decrease significantly immediately after exposure to air.
The effect of polyphenol intaking sustains only 2 to 3 hours, it cannot be accumulated in the body even if you take a large amount. Frequent intake would be more effective.
Main functions of polyphenols 1. Removal of active oxygen It helps prevention of cancer. 2. Antioxidant action It inhibits oxidation of bad LDL cholesterol, prevents aging and prevents arteriosclerosis. 3. To normalize blood glucose level and blood pressure value (catechin, rutin, proanthocyanidins(in chestnuts), etc) It helps to prevent diabetes and hypertension. 4. Bactericidal action (catechin, tannin, etc.)