Comparison of Antioxidative Activities of Ubiquinol-4 and α-Tocopherol against Methyl Linoleate Peroxidation and Their Cooperative Effect

Abstract

A comparison was made of the antioxidative activity of ubiquinol-4 (H₂CoQ₄) and α-tocopherol (α-TOC) in methyl linoleate system by gas chromatography (GC) and measuring the oxygen consumption of the head space gas. The synergistic effect of H₂CoQ₄ on α-TOC was also studied. At various concentrations, the activity of H₂CoQ₄ was weaker than that of α-TOC ; 0.7% H₂CoQ₄ addition showed the same effect as 0.33% α-TOC addition. When present together, the efficiency was about the sum of their individual efficiencies, and synergistic effect of H₂CoQ₄ toward α-TOC could not be detected.