Chemical Composition, Physical Properties, and the Oxidative Stability of Oil Bodies Extracted From Argania spinosa
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Oil bodies (OB) were extracted from argan kernels using an aqueous extraction method. The composition of OB revealed its lipid profile, which had a high content of stearic and palmitic acid. Besides, evidence suggested an association between OB and tocopherols. The physical properties of argan OB (AOB) showed that their size was around 1.9 μm and the ζ-potential went from +17.7 mV at pH 2.0 to −32.25 mV at pH 8, with an isoelectric point around pH 5.1. OB were stable and small at pH 2.0, 7.0, and 8.0 but large near the pI. Additionally, AOB were stable against aggregation/coalescence even in high salt concentrations, and also against thermal processing (95 °C) with only a change in their interfacial properties. AOB emulsion showed interesting oxidative stability at different storage temperatures and heat treatment. Heat treatment and storage at low temperature preserved oleosins from degradation by the endogenous enzyme, and H-oleosin 15 kDa resisted hydrolyzation even at a high storage temperature for 2 weeks.
Original language | English |
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Journal | JAOCS, Journal of the American Oil Chemists' Society |
Volume | 95 |
Issue number | 4 |
Pages (from-to) | 485-495 |
Number of pages | 11 |
ISSN | 0003-021X |
DOIs | |
Publication status | Published - Apr 2018 |
Bibliographical note
Funding Information:
Acknowledgments This work was supported by the Natural Science Foundation of China (31671786), the Research Fund of National 13th Five-Year Plan of China (2016YFD0401404), the Northern Jiangsu Province Science and Technology Projects (BN2016137), and the Fundamental Research Funds for the Central Universities (JUSRP51501).
Funding Information:
This work was supported by the Natural Science Foundation of China (31671786), the Research Fund of National 13th Five-Year Plan of China (2016YFD0401404), the Northern Jiangsu Province Science and Technology Projects (BN2016137), and the Fundamental Research Funds for the Central Universities (JUSRP51501). The authors declare that they have no conflicts of interest.
Publisher Copyright:
© 2018 AOCS
- Aqueous extraction method, Argan oil bodies, H-oleosin, Oxidative stability, Physical stability, Preemulsified AOB, γ-Tocopherols
Research areas
ID: 391503620