Biological activities of extracts from cornus kousa fruit

The extracted phenolic compounds from Cornus kousa fruit for biological activities as functional resources were examined. The phenolic compounds which were extracted with water and 40% ethanol from Cornus kousa fruit were 7.04±0.27 and 4.47±0.18mg/g, respectively. The 1,1-diphenyl-2-picrylhydrazyl free radical scavenging activity of water and ethanol extracts were 84% and 86% at 50 μg/mL phenolics, respectively. The 2,2'- Azinobis-(3-ethylbenzothiazoline-6-sulfonic acid radical decolorization activity of water and ethanol extracts were 84 and 95% at 100 μg/ mL phenolics, respectively. Antioxidant protection factor in water and ethanol extracts at 50 μg/mL phenolics were 1.93 and 1.82 PF, respectively. Thiobarbituric acid reactive substance were 69% in water extracts and 89% in ethanol extracts at 150 μg/mL phenolics. The inhibition activity on xanthine oxidase in water and ethanol extracts was 34 and 60%, respectively. The inhibition activity on α-glucosidase was 29% in water extracts and 87% in ethanol extracts. The tyrosinase inhibitory activity was 19% in ethanol extracts. The collagenase inhibition activity of anti-wrinkle effect showed an excellent wrinkle improvement effect as 53% in water extracts and 77% in ethanol extracts at 200 μg/mL phenolics. The hyaluronidase inhibition activity as antiinflammation effect of water extracts was confirmed to 34% of inhibition at 200 μg/mL phenolic. The results can be expected extracts from Cornus kousa fruit to use as functional resource for antioxidant, antigout, inhibitor of carbohydrate degradation, antiwrinkle activity and antiinflammation activity.