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ELECTRON SPIN RESONANCE STUDIES OF ULTRAVIOLET IRRADIATED KERATIN AND RELATED PROTEINS
Author(s) -
Dunlop J. I.,
Nicholls C. H.
Publication year - 1965
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1965.tb07936.x
Subject(s) - radical , electron paramagnetic resonance , keratin , photochemistry , chemistry , irradiation , spectroscopy , resonance (particle physics) , wavelength , ultraviolet , materials science , nuclear magnetic resonance , biochemistry , atomic physics , biology , physics , optoelectronics , nuclear physics , paleontology , quantum mechanics
— The formation of free radicals in keratin and related proteins by exposure to u.v. light has been examined by electron spin resonance spectroscopy. From a comparison of the spectra obtained and the effects of different wavelengths and the stabilities of the radicals produced, it has been shown that several species of free radicals are produced by the u.v. irradiation of keratin. However it has been possible to identify only those free radicals associated with the cystine residues. The free radicals produced in keratin by exposure to shorter wavelength irradiation (below 3250 Å) were found to be quite different to those produced at longer wavelengths.