Summary
This study of the glycerolysis of linseed, coconut, and sesame oil at 200°C., 225°C., and 250°C. shows that coconut oil, because of its low-average-molecular weight, is esterified more easily than sesame and linseed oils. Comparison of the reactions of sesame and linseed oils indicates that saturated acids are trans-esterified more easily than the unsaturated ones. The amount of glycerol to be used is determined by its miscibility at the particular reaction temperature.
Results of alcohol extraction of the crude monoglycerides from linseed and coconut oil indicate that the glycerides separate on the basis of degree of esterification rather than on unsaturation.
Urea adduct fractionals of the technical monoglycerides of sesame oil and lauric acid show that diglycerides form urea adducts more easily than do monoglycerides. In this case, also, the fractionation is related to the degree of esterification rather than unsaturation.
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Mehta, T.N., Shah, S.N. Glycerolysis of coconut, sesame, and linseed oils. Fractionation of the products with alcohol and urea. J Am Oil Chem Soc 34, 587–591 (1957). https://doi.org/10.1007/BF02638759
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DOI: https://doi.org/10.1007/BF02638759