%A ZHENG Hu-Zhe , , LEE Hye-Ryun , CUI Chun-Lan , HWANG In-Wook ,
KWON Sun-Young , CHUNG Shin-Kyo %T Quantification of Flavonoid Compounds from Strawberry ( Fragaria ananassa) and Correlation Effects with Antioxidant Activities %0 Journal Article %D 2008 %J Plant Diversity %R %P 125-128 %V 30 %N 01 %U {https://journal.kib.ac.cn/CN/abstract/article_30138.shtml} %8 2008-02-25 %X

The amounts of flavonoid (myricetin , quercetin and kaempferol), antioxidant contents ( total phenolic and total flavonoid) and antioxidant activities (DPPH and FRAP) were analyzed in strawberry. Quantitative analysis of conjugated flavonoid contents were obtained after different hydrolysis concentration and reaction period . The highest yields of myricetin and quercetin were found with 1.0M HCl and a reaction period of 0.5 hr, however , for kaempferol was 1.0M HCl and a reaction period of 1hr , respectively. In the study, we also estimated the correlation coefficient of TPC, TFC, DPPH and FRAP. In addition , a positive correlation was observed ( r = 0.980, P < 0.05) between TPC and TFC, TPC and TFC are correlated to the DPPH activity (r = 0.913, P < 0.05 and r = 0.899 , P < 0.05 , respectively) , and to the FRAP activity ( r = 0.958, P < 0.05 and r = 0.936, P < 0.05, respectively), respectively. These results pointed out that strawberry generally possesses a high level of antioxidant activities, which could be linked to the levels of phenolic compounds in the fruit.