著者

今原 広次 伊東 泰美

出版者

The Society of Cosmetic Chemists of Japan

雑誌

日本化粧品技術者会誌 (ISSN:03875253)

巻号頁・発行日

vol.16, no.1, pp.10-14, 1982-08-15 (Released:2010-08-06)

参考文献数

16

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Tyrosinase activity was manometrically assayed by measuring the rate of Oxygen consumption in dopa-substrate with Warburg's apparatus.The inhibitory effect to tyrosinase with Placenta Extract was tested through the above method and 20 percent to the original activity was inhibited by Placenta Extract.Furthermore, the activity of this enzyme was measured in tyrosin-substrate by the same method and at the initial step of the reaction, 60 Percent to the original activity was inhibited by Placenta Extract.From the above results, we recognized that the reaction processed from Tyrosin to Dopd was extremely inhibited by Placental Extract.