The previous results of the study of the yield of esters as a function of reaction parameters [30] indicate that the reaction
temperature for obtaining a high ester yield depends on the acidity of the oil.In this way,when used refined oils,the reaction
temperature was 45 °C, and when used crude and degummed oils,
the transesterification was carried out at 30 °C. For all oils,the oil:alcohol molar ratio used was1:7.5 and the amount of catalyst was 1% of mass of oil.The reaction was prepared in a 2L batch reactor and the reaction time was 1h. The reactor contents were mixed using a mechanical stirrer.