PROBLEM TO BE SOLVED: To provide a polyphenol composition manufacturing method excellent in solubility in water, which uses an inexpensive material giving little influence on the flavor of a composition.SOLUTION: There is provided the polyphenol composition manufacturing method which includes a step wherein a water-insoluble polyphenol (A) and at least one kind (B) selected from among a catechin, chlorogenic acid and a water-insoluble polyphenol methylated substance undergo heat treatment at 100-180°C, in the presence of an aqueous medium.COPYRIGHT: (C)2013,JPO&INPIT【課題】安価で、組成物の風味への影響が少ない素材を用いて、水への溶解性に優れるポリフェノール組成物を製造する方法を提供する。【解決手段】水性媒体の存在下、(A)難水溶性ポリフェノール類と(B)カテキン類、クロロゲン酸類及び難水溶性ポリフェノール類のメチル化物から選ばれる1種又は2種以上を100~180℃で加熱処理する工程を含むポリフェノール組成物の製造方法。【選択図】なし