Variation Trend of Polyphenol Content in Persimmon Fruit

The growth process of fruit and the variation trend of polyphenol content in main persimmon variety in Hunan Province were systematically studied.The results showed that the growth process of persimmon fruit showed double-S curve;the variation trends of total polyphenol content in sweet persimmon and astringent persimmon are almost the same,but the total polyphenol content in astringent persimmon was higher than that in sweet persimmon,and the decreasing rate of polyphenol in astringent persimmon was lower than that in sweet persimmon;from the aspect of the use value of polyphenol in persimmon fruit,the early September is suitable to pick persimmon fruit of local varieties for intensive processing,and the processed products should refrigerated and storage time should not exceed 7 days.