A mixture of low erucic acid rapeseed oil and palm stearin (4:6) has been used for interesterification in the presence of biocatalyst – Lipozyme IM and chemical catalyst – sodium methoxide. Their oxidative stability have been investigated by means of DSC. It has been shown that the pure triacylglycerols isolated from the products of enzymatic interesterification have oxidative stability comparable to the TAGs prepared from initial mixture. The stability of TAGs obtained from the products of chemical interesterification decreased almost twice. Addition of non-TAGs fraction enriched in partial glycerides (DAG and MAG) to pure TAGs leds to a decrease of oxidative stability with the added fraction concentration increase. The stability is improved by addition of commercial emulgator 3328.