Chemical Composition, Physical Properties, and the Oxidative Stability of Oil Bodies Extracted From Argania spinosa

Research output: Contribution to journalJournal articleResearchpeer-review

  • Farah Zaaboul
  • Raza, Husnain
  • Abderrahim Lazraq
  • Boxin Deng
  • Chen Cao
  • Yuan F. Liu

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 languageEnglish
JournalJAOCS, Journal of the American Oil Chemists' Society
Volume95
Issue number4
Pages (from-to)485-495
Number of pages11
ISSN0003-021X
DOIs
Publication statusPublished - 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

    Research areas

  • Aqueous extraction method, Argan oil bodies, H-oleosin, Oxidative stability, Physical stability, Preemulsified AOB, γ-Tocopherols

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