According to a research by A. Pieroni, V. Janiak, C. M. Dürr, S. Lüdeke, E. Trachsel and M. Heinrich (2002) in the Centre for Pharmacognosy and Phytotherapy (The School of Pharmacy, University of London) "the antioxidant activity of the young whorls of Centaurea calcitrapa, both in the DPPH and in the lipid peroxidation inhibition assays, are very interesting and the species should be investigated phytochemically and biochemically focusing on these
Aldehyde dehydrogenase isozymes are thought to play a major role in the detoxification of aldehydes generated by alcohol metabolism and lipid peroxidation.
Leaves of E. maingayi displayed ferrous ion chelating ability and lipid peroxidation inhibition activity that were much higher than young leaves of Camellia sinensis.