Results of investigations of the phospholipids (PL) and hydroperoxide influence on the antioxidant action efficiency of the synthetic phenolic antioxidants (InH) –2,6-di-tert-butyl-4-methylphenol (BHT), 4-methoxyphenol (MOP), 4-tert-butylphenol; natural InH – α-tocopherol (TP), quercetin (Q) and dihydroquercetin (QH2) and hydrated quinoline – 2,2,4-trimethyl-6-ethoxy-1,2-dihydroquinoline (ethoxyquin, EQ), performed by the model of the initiated oxidation of methyl oleate are generalized. It is established that the PL additives lead to both an increase of the oxidation rate within the induction period (Wτ) and an alteration of the induction period duration (τ). According to the increase in Wτ for mixtures with PL studied InH is graded by the following sequence: QH2 > Q > EQ > TP > MOP > BHT, that is conformed by the differential UV spectroscopy data. The value of τ increases in the presence of PL for TP, MOP and EQ, it is unchangeable for BHT and substantially decreases for QH2 and Q. Reasons leading to an alteration of the InH efficiency in the PL presence are discussed.
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