A decomposition study of the EPR spectrum of irradiated sucrose

In general, the EPR spectra of irradiated sugars are very complex because o f their multicomponent character. In this study we applied a multivariate s tatistical method called MLCFA, maximum likelihood common factor analysis, and it predicted at least six components contributing to the total EPR spec trum of irradiated sucrose. Three dominant components have already been iso lated in an irradiated sucrose single crystal using electron nuclear double resonance (ENDOR) and ENDOR induced EPR (EI-EPR). Results of EPR simulatio ns based on the ENDOR data are in a reliable agreement with the experimenta l EPR spectra of irradiated sucrose single crystals. (C) 2000 Published by Elsevier Science Ltd. All rights reserved.