Fukai Satomi, Tanimoto Shinichi, Maeda Aki, Fukuda Hitomi, Okada Yoshiharu, Nomura Masato
Graduate School of System Engineering, Program in Systems Engineering, Kinki University, Hiroshima, Japan.
J Oleo Sci. 2009;58(4):213-9. doi: 10.5650/jos.58.213.
Persimmon peels (Diospyros kaki THUNB.) are discarded during the production of dried fruit. The 2-methoxy-4-vinylphenol (8) which is component of persimmon peel had high antioxidant activity on the DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging assay and SOD (superoxide dismutase) assay. And (8) had higher tyrosinase inhibiting activity than that of arbutin using both L-tyrosine and L-DOPA as substrates. In addition, tyrosinase inhibiting activity of synthesized 2-methoxy-4-vinylphenol glycoside (8a) was studied. (8a) had tyrosinase inhibiting activity, suggesting that (8a) has possibilities for ingredient of cosmetics that are possessed of whitening effect.
在柿子干生产过程中,柿子皮(柿科柿属植物)被丢弃。柿子皮的成分2-甲氧基-4-乙烯基苯酚(8)在DPPH(1,1-二苯基-2-苦基肼)自由基清除试验和超氧化物歧化酶(SOD)试验中具有较高的抗氧化活性。并且,以L-酪氨酸和L-多巴为底物时,(8)的酪氨酸酶抑制活性高于熊果苷。此外,还研究了合成的2-甲氧基-4-乙烯基苯酚糖苷(8a)的酪氨酸酶抑制活性。(8a)具有酪氨酸酶抑制活性,这表明(8a)有可能成为具有美白效果的化妆品成分。