Journal
FOOD RESEARCH INTERNATIONAL
Volume 88, Issue -, Pages 114-121Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.foodres.2016.03.008
Keywords
Omega-3 fatty acids; Sinapic acid; Rutin; Complex coacervation; Rancimat; Stearidonic acid
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The consumption of omega-3 enables the reduction of cardiovascular disease risk; however they are unstable. The aim of this work was to encapsulate echium oil (Echium plantagineum L), a rich source of omega-3 fatty acids, with phenolic compounds (sinapic acid and rutin) by double emulsion followed by complex coacervation or by complex coacervation with sinapic acid in the capsule wall. Analyses of morphology, particle size, circularity, water activity, moisture, Fourier transform infrared spectroscopy, thermogravimetry, process yield, accelerated oxidation and identification and quantification of fatty acids present in the encapsulated oil were performed. Samples presented values of encapsulation process yield of phenolics and oil in the range of 39-80% and 73-99%, respectively. Moreover, all samples protected the oil against oxidation, obtaining induction time (accelerated oxidation) of 5 h for pure oil and values in the range from 10 to 18 h for samples. Thus, better protection to the oil was possible with sinapic acid applied in the capsule wall, which enhances its protection against lipid oxidation. (C) 2016 Elsevier Ltd. All rights reserved.
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