New application of colla corii asini polyphenol extract

The invention discloses a new application of a colla corii asini polyphenol extract, namely an application of the colla corii asini polyphenol extract in preparation of an alpha-glucosidase inhibitor or an antioxidant. The coreopsis tinctoria polyphenol extract is prepared by taking coreopsis tinctoria as a raw material, carrying out ultrasonic extraction by adopting an ethanol aqueous solution, concentrating an extracting solution to remove ethanol, adjusting the pH value of a concentrated solution to 2, centrifuging to remove precipitate, degreasing supernate, extracting with ethyl acetate, and concentrating. The preparation method is simple, the total phenol content is high, experimental results show that the colla corii asini polyphenol extract has good antioxidant activity and alpha-glucosidase inhibiting activity, and a new way is provided for research and development of antioxidants and blood sugar reducing health-care foods or medicines. 本发明公开了一种东紫苏多酚提取物的新用途，即其在制备ɑ-葡萄糖苷酶抑制剂或抗氧化剂中的应用；所述东紫苏多酚提取物是以东紫苏为原料