Heterogeneous aspects of lipid oxidation in dried microencapsulated oils

Journal of Agricultural and Food Chemistry
Joaquín VelascoGloria Márquez-Ruiz

Abstract

This work was aimed at studying lipid oxidation in dried microencapsulated oils (DMOs) during long-term storage. Samples were prepared by freeze-drying of emulsions containing sodium caseinate and lactose as encapsulating components. Evaluation of lipid oxidation was approached by quantitative analysis of nonvolatile lipid oxidation products and tocopherol. Lipid oxidation products were analyzed by separation of polar compounds by adsorption chromatography followed by HPSEC with refraction index detection for quantitation of oxidized triglyceride monomers, dimers, and oligomers. The analytical method applied enabled the detection of different oxidative patterns between the free and encapsulated oil fractions. The free oil fraction of DMOs showed a typical oxidative pattern for oils in continuous phase, which consisted of a clear induction period, in which hydroperoxides (oxidized triglyceride monomers) accumulated, before oxidation accelerated. The end of the induction period was marked by the total loss of tocopherol and the initiation of polymerization. On the contrary, the encapsulated oil showed a pattern characteristic of a mixture of oils with different oxidation status. Thus, high contents of advanced oxidation compounds...Continue Reading

References

Feb 12, 2002·Journal of Microencapsulation·Y MinemotoR Matsuno
Jan 1, 1999·Bioscience, Biotechnology, and Biochemistry·Y MinemotoR Matsuno

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Citations

Aug 21, 2010·Journal of Food Science·Jerrad Legako, Nurhan Turgut Dunford
Dec 11, 2019·Journal of the Science of Food and Agriculture·Juan Carlos SolomandoTrinidad Perez-Palacios
Feb 6, 2020·Journal of the Science of Food and Agriculture·Jingjing FuTong Wang
Sep 16, 2017·Journal of Food and Drug Analysis·Fahim Tamzeedul KarimMohammed Zaidul Islam Sarker
Jan 25, 2020·Journal of Food Science and Technology·Aniseh JamshidiTrinidad Perez-Palacios
Nov 1, 2017·Comprehensive Reviews in Food Science and Food Safety·Sami GhnimiAfaf Kamal-Eldin
Jul 17, 2007·Journal of Agricultural and Food Chemistry·Luis M Rodríguez-AlcaláJavier Fontecha
Mar 13, 2010·Journal of Agricultural and Food Chemistry·Zhiping ShenLi Jiang Cheng

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