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ABSTRACT

Effects of 0, 0.25 and 0.5% monostearin, distearin, monolinolein or dilinolein on the oxidative stability of soybean oil were studied by measuring oxygen in the headspace of oil bottles by gas chromatography. As the levels of the monoglycerides and diglycerides increased from 0, 0.25 to 0.5%, headspace oxygen during storage decreased. The control sample (0%) was significantly different from the samples containing monostearin, distearin, monolinolein or dilinolein at α=0.05. All these mono- and di-glycerides acted as prooxidants in soybean oil.