| Popis: |
The antioxidative properties of trimethylamine oxide (TMAO) were investigated by using lard and methyl esters of linseed oil under various oxidative conditions.It was found that TMAO itself had no antioxidative activity. When lard was tested by Active Oxygen method (AOM), the antioxidative activity of natural tocopherols (M-Toc) or butyrated hydroxyanisole (BHA) was promoted remarkably by the addition of TMAO and the same result was also obtained by Weight gain method at 60°C. When methyl esters of linseed oil was tested by Weight gain method to examine the effect of TMAO on M-Toc at 30°C, TMAO showed an pro-oxidative effect at the lower concentration of M-Toc. As the concentration of M-Toc became higher than ca. 0.08%, however, the stability of the substrate increased in proportion to the concentration of TMAO added.The effect of TMAO on the activity of M-Toc was not observed when methyl esters of linseed oil were tested by Warburg method (emulsified with Tween 20, pH 7.0, 37°C) Consequently, it has been recognized that TMAO acted as a potent synergist of antioxidantssuch as M-Toc and BHA under certain conditions. |
