Liha töötlemine
The
ric determination of malondialdehyde (MDA) main modifications of amino acids by oxida-
Detection of Chemical Hazards 475
tion, especially proline, arginine, lysine, 2008). Both semialdehydes are formed as the
methionine, and cysteine residues, consist of main carbonyl products from metal-catalyzed
the formation of carbonyl derivatives (Giulivi oxidized proteins. This method uses liquid
et al. 2003). The formation of carbonyl com- chromatography-electrospray ionization
pounds can be used as a kind of measurement mass spectrometry and was recently applied
of protein damage by oxygen radicals under to a survey of protein oxidation in different
processing conditions. Other oxidative mech- meat products. The results showed that dry-
annaabi.ee 
