Sensitized photo-oxidation of gadusol species mediated by singlet oxygen.

Gadusols are efficient nature UV sunscreens with antioxidant capacity. The kinetics of the quenching reactions of singlet oxygen O(∆) by gadusol species was evaluated in aqueous solution as well as in the presence of direct charged micelles. Time-resolved phosphorescence detection of O(∆) indicated that gadusolate, the main species under biological pH, is a more efficient quencher than the enol form with a rate constant of ca.