Fractionation of Short and Medium Chain Fatty Acid Ethyl Esters from a Blend of Oils via Ethanolysis and Short‐Path Distillation

Abstract

The main objective of the present work was to obtain fractions enriched in short (SCFAEE) and medium chain (MCFAEE) fatty acid ethyl esters (FAEE) from a blend of oils. For this purpose, coconut oil and dairy fat were blended and a transesterification of this blend was performed in order to transform the triacylglycerols into their corresponding FAEE. A detailed study of fractionation conditions for FAEE was carried out using short-path distillation. Different conditions were explored such as feed rates and temperatures; operating conditions, such as successive steps or a single step. The composition and yield of SCFAEE and MCFAEE were determined under different distillation conditions. Optimal fractionation of the desired compounds was achieved. High purity of SCFAEE and MCFAEE (94 wt%) was attained with a yield of *50%. An increased yield of SCFAEE and MCFAEE was achieved (85%) with a purity of 83 wt%. A broad range of high value fractions was obtained depending on the conditions selected. The fractions we obtained can be used as starting materials for the production of functional lipids.

Concentration of Stearidonic Acid in Free Fatty Acid and Fatty Acid Ethyl Ester Forms from Modified Soybean Oil by Winterization

“…The methodology employed was based on the method described by Vázquez and Akoh [20]. The reaction was performed in a 1 L cylindrical vessel.…”

Purification of Stearidonic Acid from Modified Soybean Oil by Argentation Silica Gel Column Chromatography

“…A transesterification reaction (ethanolysis) of the high SDA x-3 oil (modified soybean oil) was carried out in order to transform all the TAG into their corresponding FAEE. The methodology employed was based on the method described by Vázquez and Akoh [19]. The reaction was performed in a 1-L cylindrical vessel.…”

Production of Structured Triacylglycerols Containing Palmitic Acids at <i>sn</i>-2 Position and Docosahexaenoic Acids at <i>sn</i>-1, 3 Positions

“…However, the dosage of enzyme is restricted based on economic considerations and mass transfer limitations of the reaction system. In the process of preparation of lipid structure, the amount of lipase added is relatively higher 13 . Incorporation of DHA increased rapidly with the increase of enzyme dosage from 3 to 10 .…”

“…Total contents of DHA C22:6 n-3 and DPA C22:5 n-3 were 30. 13 and 5.33 in Table 3 Total fatty acid and sn-2 profile (%) of algal oil, DHA-EE and STAG at optimal reaction condition. it has low incorporation of DHA.…”