Identification of β-aspartic semialdehyde and homocysteine as major reaction products of riboflavin-sensitized photooxidation of peptide-bound methionine
Raphaela Krax,
Kira Menneking,
Johann Sajapin
et al.
Abstract:Methionine is an essential amino acid for mammals and it is limiting for monogastric animals. It can be oxidized easily by UV light. This could influence the bioaccessibility and bioavailability of methionine. In this work, the photosensitized degradation of peptide-bound methionine in the presence of riboflavin was investigated in a model system. Capillary electrophoresis was employed to analyze the time course of the degradation. The products were identified by liquid chromatography coupled to mass spectrome… Show more
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