Antioxidants interrupt lipid (and protein) oxidation,
either in the propagation phase (chain-braking
mechanism) or by protecting the oxidation substrates
against the first formed radicals in the initiation phase.
Accordingly, evaluation of plant material for antioxidative
activity should not depend only on a single
method, but it should include measurement of reactions
characteristic of both the initiation and the propagation
phase (Schwarz et al., 2001).