Nowadays chemical interesterification is the most commonly used technology to adjust the triacylglyceride composition of vegetable oil mixtures without the formation of trans isomers. However, this technology generates a considerable amount of effluents during the separation of the homogeneous catalyst from the final products. Consequently, the substitution of these catalysts by heterogeneous catalysts has, from the ecological point of view, become important. The objective of this work was to evaluate the DAPTS-MCM-41 catalyst in the interesterification reaction of palm oil and palm kernel oil by monitoring the triacylglyceride (TAG) compositions. The TAGs were evaluated by high temperature gas chromatography (HTGC) and reversed-phase high-performance liquid chromatography (RP-HPLC), while the regiospecific distribution of the fatty acids in the glycerol structure was investigated by the 13C NMR technique. The fatty acid randomization was confirmed by the variation of the saturated fatty acid concentrations in the sn-2 position as well as by the variation in the triacylglycerol compositions.

中文翻译：

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在 DAPTS-MCM-41 催化剂存在下棕榈油和棕榈仁油的化学酯交换。三酰甘油中的区域特异性分布和组成

如今，化学酯交换是最常用的技术，用于在不形成反式异构体的情况下调整植物油混合物的三酰甘油组成。然而，该技术在均相催化剂与最终产品的分离过程中会产生大量的流出物。因此，从生态学的角度来看，用多相催化剂替代这些催化剂变得很重要。这项工作的目的是通过监测甘油三酯 (TAG) 组成来评估 DAPTS-MCM-41 催化剂在棕榈油和棕榈仁油的酯交换反应中的作用。通过高温气相色谱 (HTGC) 和反相高效液相色谱 (RP-HPLC) 评估 TAG，而甘油结构中脂肪酸的区域特异性分布是通过 13C NMR 技术研究的。通过sn-2位置饱和脂肪酸浓度的变化以及三酰基甘油组成的变化证实了脂肪酸随机化。