Effect of Cu2 +-complexation on the scavenging ability of chrysin towards photogenerated singlet molecular oxygen (O2(1Δg)). Possible biological implications

A quantification of the efficiency on the initial anti-oxidative effect exerted by Chr and [Chr2Cu] towards tryptophan was carried out. The amino acid is an archetypal molecular model, commonly employed to monitor oxidative degradation of proteinaceous media. It was efficiently photoprotected against O2(1Δg)-mediated photooxidation by [Chr2Cu].