Abstract
The research work was aimed to produce 2-monoacylglycerol rich omega-3 polyunsaturated fatty acids from supercritical carbon dioxide (SC-CO2) extracted Atlantic salmon frame bone oil (SFBO) by using sn-1,3 lipase catalyzed ethanolysis. SFBO was extracted by SC-CO2 at 45 °C, 25 MPa at carbon dioxide flow rate of 27 g/min for 3 h. Four sn-1,3 specific immobilized lipases namely Novozym-435, Lipozyme TLIM, Lipozyme RMIM, and Lipase DF were screened to evaluate the efficiency of catalyzing ethanolysis reaction for 2-monoacylglycerol production. Response surface methodology (RSM) was applied to optimize ethanolysis parameters such as reaction temperature, time, enzyme load, and ethanol: oil molar ratio to maximize 2-monoacylglycerol production. Salmon frame bone was found rich in oil and the yield was 35.15% in supercritical CO2 extraction. Lipozyme TLIM showed the highest catalyzing activity for 2-monoacylglycerol production from SFBO. The optimum reaction temperature, time, enzyme load, and ethanol: oil molar ratio determined by RSM were 42.5 °C, 4.15 h, 42.81%, and 49.82, respectively at which the yield of 2-monoacylglycerol was 41.81%. Thin layer chromatography analysis proved that the solvent extraction process performed in this study for the separation and purification of 2-MAG from ethanolysis reaction products was successful. The ω-3 polyunsaturated fatty acids content was found 21.34% in 2-monoacylglycerol whereas SC-CO2 extracted SFBO contained 11.25%. Production of 2-monoacylglycerol by ethanolysis reaction of SFBO at the optimized conditions with Lipozyme TLIM may be an efficient approach for human food supplement and potential for food and pharmaceutical industry.
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This work was supported by Business for Cooperative R&D (Grant No. C0350298) between Industry, Academy, and Research Institute funded Korea Small and Medium Business Administration in 2015.
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Haq, M., Pendleton, P. & Chun, BS. Utilization of Atlantic Salmon By-product Oil for Omega-3 Fatty Acids Rich 2-Monoacylglycerol Production: Optimization of Enzymatic Reaction Parameters. Waste Biomass Valor 11, 153–163 (2020). https://doi.org/10.1007/s12649-018-0392-9
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DOI: https://doi.org/10.1007/s12649-018-0392-9