From microalgae oil to produce novel structured triacylglycerols enriched with unsaturated fatty acids. (May 2015)

• Record Type: Journal Article
• Authors: Wang, Jun; Wang, Xu-Dong; Zhao, Xing-Yu; Liu, Xi; Dong, Tao; Wu, Fu-An
• Is Part Of: Bioresource technology. Volume 184(2015)
• Page Start: 405
• Page End: 414
• Publication Date: 2015-05
• Subjects: Biocatalysis -- Lipase -- Microalgae oil -- Polyunsaturated fatty acids -- Structured triacylglycerols; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2014.09.133
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Novel STAGs enriched with UFAs and low PA content firstly produced from algae oil. UFAs content in sn -1, 3 positions of STAGs increased from 70.20% to 90.9%. PA content in sn -1, 3 positions of STAGs decreased from 24.49% to 6.95%. STAGs with good plasticity and storage ranges may be used as nutrition enhancers. Lipozyme RM IM may be reused 16 times without significant loss of activity. Abstract: Novel structured triacylglycerols (STAGs) enriched with unsaturated fatty acids (UFAs) and low palmitic acid (PA) content were firstly synthesized from Schizochytrium sp. oil and oleic acid (OA) via solvent-free acidolysis catalyzed by Lipozyme RM IM. The results indicated that, the PA content decreased from 24.49% to 6.95%, while the UFAs content increased from 70.20% to 90.9% at the sn -1, 3 positions in the STAGs under the optimal condition (i.e., lipase load of 7%, molar ratio of microalgae oil TAGs to OA of 1:3, and temperature of 65 °C). The lipase Lipozyme RM IM could be reused 16 times without significant loss of activity. The improved plastic and storage ranges of STAGs are useful for infant formula formulations, by which a possible method is blending of this product and 1, 3-dioleoyl-2-palmitoylglycerol enriched fats and minor lipids based on the corresponding chemical compositions of human milk fat.