please help me to find method for assaying tyrosinase activity colourimetry
refer Polyphenol Oxidase Assay(tyrosinase)www.worthington-biochem.com/TY/assay.htmlKinetic Analysis of the Enzyme Tyrosinasedarwin.nmsu.edu/~blyons/BCHE_397/tyrosinase.htm
have a look at this article,
Possible involvement of proteolytic degradation of tyrosinase in the regulatory effect of fatty acids on melanogenesisHideya Andoa,b,c, Yoko Funasakaa, Masahiro Okaa, Akiko Ohashia, Minao Furumurab, Jun Matsunagab, Naoko Matsunagab, Vincent J. Hearingb, and Masamitsu Ichihashia
a Department of Dermatology, Kobe University School of Medicine, Kobe, Japan
b Laboratory of Cell Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD
c Central Research Institute, SUNSTAR Inc., Takatsuki, Osaka, Japanhttp://www.jlr.org/cgi/content/full/40/7/1312
It also contains info on tyrosine assay. hope it helps.