Open AccessMonomolecular films of irradiated ergosterol in relation to the production of vitamin D
Publication year - 1929
Publication title -
proceedings of the royal society of london. series a, containing papers of a mathematical and physical character
Language(s) - English
Resource type - Journals
eISSN - 2053-9150
pISSN - 0950-1207
DOI - 10.1098/rspa.1929.0201
Subject(s) - ergosterol , irradiation , vitamin , chemistry , absorption (acoustics) , vitamin e , ergocalciferol , materials science , biochemistry , composite material , physics , cholecalciferol , nuclear physics , antioxidant
The monomolecular films on water of the irradiation products of ergosterol resemble those of certain ketonic cholesterol derivatives. The surface film of substance A (probably vitamin D), in particular, resembles that of oxycholesterylene (∆4.6 cholestadiene-8one). The ultra-violet absorption spectra of the two substances are very closely similar, and of intensity about twice that of ergosterol. Oxycholesterylene is, however, devoid of antirachitic properties, both before and after irradiation.