Specified kakaoprocyanidins used in foods, drinks, supplements, pharmaceuticals, etc. and methods for producing the same

摘要

The present invention addresses the problem of providing a method for manufacturing a comparatively high-purity 4-mer polyphenol by precisely isolating said 4-mer polyphenol from a polyphenol mixture. This method for manufacturing a specific polyphenol uses a non-acid-containing eluent to isolate a 4-mer polyphenol from a polyphenol mixture via gel filtration fractionation, e.g. liquid chromatography or gel filtration chromatography.