Reaction of neutral carotenoid with a radical can result in the
radical abstracting a hydrogen from the carotenoid. This results
in the formation of a resonance stabilized carotenoid radical as
can be seen in Eqs. 15 and 16 (Choe and Min, 2006; Liebler
andMcClure, 1996;Woodall et al., 1997). Liebler andMcClure
proposed this as a potential mechanism by which beta-carotene
oxidation products were formed during oxidation with AMVN
(2,4-dimethylvaleonitrile) radicals in benzene at 60◦C based on
atmospheric pressure chemical ionization mass spectrometry
results (Liebler and McClure, 1996).