Antioxidant Activity and Development of Cosmetic Materials of Solvent Extracts from Kaempferia parviflora
2018
Choi, M.H., Chungnam National University, Daejeon, Republic of Korea | Kim, K.H., Chungnam National University, Daejeon, Republic of Korea | Yook, H.S., Chungnam National University, Daejeon, Republic of Korea
To confirm the antioxidant activity and potential of cosmetic materials of Kaempferia parviflora, ethanol extracts of K. parviflora were fractionated with n-hexane, dichloromethane, ethyl acetate, n-butanol, and water. The extraction yield of the ethanol extract was 32.46%, while those of the other fractions were less than or equal to 10%. The total phenol content was 19.48~92.26 gallic acid equivalent mg/g, with the highest content being found in the dichloromethane fraction. The flavonoid contents were 15.66~67.73 catechin equivalent mg/g, with the ethyl acetate fraction showed the highest levels. The DPPH and ABTS radical scavenging ability and ferric reducing antioxidant potential activity of the ethyl acetate fraction was highest, whereas it was lowest in the water fraction. Evaluation of the tyrosinase inhibition activity, based on the whitening effect, revealed values of 52.89 to 79.68% at 1 mg/mL, with ethanol extract having the highest value. At the same concentration, elastase inhibition activity was significantly higher, with values of 38.60%, 36.85%, and 34.62% being observed in the dichloromethane, water, and n-butanol fractions, respectively. These results imply that the ethanol extracts and solvent fractions of K. parviflora are potential sources of natural antioxidants with free radical scavenging activity that might be useful for inhibiting tyrosinase and elastase.
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