METHOD FOR PRODUCING RAW MATERIAL OF REFINED FLOUR OF ASTRINGENT COAT WITH CHESTNUT FLESH, AND FOOD, COSMETICS, PHARMACEUTICALS CONTAINING ACTIVE INGREDIENT OF ASTRINGENT COAT, BARK AND LEAF OF CHESTNUT

摘要

PROBLEM TO BE SOLVED: To provide a method for extracting unknown active ingredients contained in chestnut bark and leaves although the practical use of ingredients contained in the astringent coat of a chestnut and active on human bodies is known.SOLUTION: Refined flour of astringent coat with chestnut flesh containing more active ingredients than before can be produced by a method of soaking dried chestnut astringent coat in an aqueous solution that contains active ingredients extracted by boiling chestnut barks and leaves in a pot. A secondary processed product containing refined flour of astringent coat with chestnut flesh of higher functionality can thereby be produced.