Method for extracting papaya seed meal polyphenol

The invention relates to a method for extracting papaya seed meal polyphenol. The method comprises the following steps: (1) cleaning papaya seeds to remove impurities, drying and placing in a pulverizer to be pulverized, passing through a mesh sieve, and uniformly mixing to be ready for use; (2) adding an acetone extract to papaya seed meal powder, and placing in an ultrasonic cleaner for extracting; and (3) placing the extract in a rotary evaporator to be concentrated under reduced pressure, eluting with double distilled water to remove impurities, and then desorbing with ethanol until the eluent is colorless, concentrating under reduced pressure and drying to obtain papaya seed meal polyphenols. The polyphenols of papaya seed meal are extracted by ultrasonic-assisting, so that the great waste of the papaya seed meal is avoided and the comprehensive utilization value of papaya is improved. The method is simple to operate, low in cost, short in extraction time, high in extraction rate and high in purity, and is suitable for industrial production.