Journal
FOOD SCIENCE AND BIOTECHNOLOGY
Volume 25, Issue 1, Pages 41-47Publisher
KOREAN SOCIETY FOOD SCIENCE & TECHNOLOGY-KOSFOST
DOI: 10.1007/s10068-016-0006-x
Keywords
chia oil; omega fatty acid; olein; stearin; phenolic compound
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Funding
- Higher Education Commission of Pakistan
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Omega 3 and 6 fatty acids were enriched in the olein fraction of chia oil via dry fractionation at -30A degrees C. Concentrations of C18:3 (linolenic acid, omega-3) and C18:2 (linoleic acid, omega-6) were 78.16 and 25.42% in the olein fraction. HPLC characterization indicated enrichment of caffeic and chlorogenic acids, quercetin, and phenolic glycosides in the olein fraction. Total antioxidant activities of chia oil and the olein and stearin fractions were 42.5, 53.8, and 34.6%, respectively. After 6 months of storage at 4A degrees C, the concentration of omega-3 in the olein fraction decreased from 78.19 to 76.16%, with a 10% decrease in the omega-3 concentration when the olein fraction was stored at 25A degrees C. The stearin fraction of chia oil exhibited the longest induction period, followed by chia oil and the olein fraction. Amounts of omega-3 and 6 fatty acids can be enriched in the olein fraction from 11.92 and 61.28% to 15.22 and 72.16%, respectively, with reasonable storage stability at low temperature.
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