Abstract
The diacylglycerols (DAG) are emulsifiers with high added value used as functional additives in food, medicine, and cosmetic industries. In glycerolysis of oils for the production of DAG, the immiscibility between the substrates (glycerol and oil phases) has to be overcome, for example, by the addition of a food grade surfactant like Tween 65. The main objective of this work was to optimize the process conditions for obtaining diacylglycerols rich in the omega-3 eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids, through the enzymatic glycerolysis of fish oil, in systems with Tween 65 and without this surfactant, using Lipozyme TL® IM as biocatalyst. The experiments were performed according to predetermined conditions varying the temperature, enzyme load, the oil to glycerol molar ratio and, when added, the surfactant load. After 6 h of reaction, it was possible to produce up to 20.76 and 13.76 % of diacylglycerols from fish oil in the reactions with and without Tween 65, respectively.
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Acknowledgments
Financial support from Fundação de Apoio à Pesquisa Científica e Tecnológica do Estado de Santa Catarina (FAPESC, Brazil), as well as fellowships from Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES, Brazil) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, Brazil) are appreciated. Donations of lipase from Novozymes (Brazil) and fish oil from OmegaProtein (USA) are gratefully acknowledged.
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Monte Blanco, S.F.M., Santos, J.S., Feltes, M.M.C. et al. Optimization of diacylglycerol production by glycerolysis of fish oil catalyzed by Lipozyme TL IM with Tween 65. Bioprocess Biosyst Eng 38, 2379–2388 (2015). https://doi.org/10.1007/s00449-015-1473-9
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DOI: https://doi.org/10.1007/s00449-015-1473-9