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Background : Collagen and elastin contribute to form a network under the epidermis and reduce the wrinkles. Collagen and elastin are degraded by collagenase and elastase. Therefore, inhibition of collagenase and elastase activity could be an excellent method for anti-wrinkle. Pinus Koraiensis leaves contain various flavonoid compounds such as quercetin and kaempferol. According to previous reports, kaempferol has increases procollagen synthesis and inhibitory effect on MMP-1 activity. This study was performed to investigate the anti-wrinkle effect of Pinus Koraiensis leaves extract and fractions.
Methods and Results : The active components of Pinus Koraiensis leaves extracts and fractions were determined. Total phenol and total flavonoid contents measured using the Folin-Ciocalteu reagent and according with aluminum chloride colormetric method. The kaempferol content analysis using HPLC system. The total phenol, flavonoid and kaempferol contents of ethyl acetate fraction was the highest. The antioxidant activity measured in according with DPPH, ABTS and RP assay. Pinus Koraiensis leaves extract and factions were the highest ethyl acetate fraction in antioxidant activity. The inhibitory activity on collagenase and elastase of Pinus Koraiensis leaves extract and factions were determined. The results of inhibitory activity on enzymes associated with wrinkle formation was the highest of n-butanol fraction, the next higher was 80% ethanol extract. As a result of using MMP-1 content and procollagen type-I C-peptide content assay kit, the anti-wrinkle effect of n-hexane fraction was highest.
Conclusion : These results indicate that Pinus Koraiensis extract may help anti-wrinkl
