†On leave from the Institute of Molecular Biology, Jagiellonian University Department of Biophysics, Krakow, Poland.
PHOTOSENSITIZATION OF MELANINS: A COMPARATIVE STUDY
Article first published online: 2 JAN 2008
Photochemistry and Photobiology
Volume 42, Issue 5, pages 529–532, November 1985
How to Cite
Sarna, T., Menon, I. A. and Sealy, R. C. (1985), PHOTOSENSITIZATION OF MELANINS: A COMPARATIVE STUDY. Photochemistry and Photobiology, 42: 529–532. doi: 10.1111/j.1751-1097.1985.tb01605.x
- Issue published online: 2 JAN 2008
- Article first published online: 2 JAN 2008
- Received 28 February 1985; accepted 8 July 1985
Abstract— Measurements of photosensitized free-radical production and oxygen consumption have been made in several melanin systems. The melanins studied were cysteinyldopa melanin (a model for pheomelanin), natural pheomelanins extracted from red hair and from red chicken feathers, and eumelanin extracted from bovine eyes. Rose Bengal was used as photosensitizer. A significant enhancement in the rates of free radical production and oxygen consumption was found in all systems when sensitizer was present. The largest effects were found with cysteinyldopa melanin and effects on pheomelanins were shown to be greater (by factors of4–6) than on eumelanins.