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Chemistry of Natural Compounds

, 45:616 | Cite as

Characterization of Opuntia ficus indica seed oil from Tunisia

  • I. El MannoubiEmail author
  • S. Barrek
  • T. Skanji
  • H. Casabianca
  • H. Zarrouk
Article

The lipid fraction of Opuntia ficus indica seeds was extracted and analyzed for its chemical and physical properties such as acid value, free fatty acid percentage (% FFA), iodine index, peroxide value, and saponification value as well as refractive index and density. The yield of seed oil was calculated as 11.75%. The acid and free fatty acid values indicated that the oil has a fairly low acidity. The triacylglycerols, fatty acids, sterols, and tocopherols were identified and their concentrations determined. The main TAGs were LLL (25.60%), OLL (21.53%), PLL (15.53%), and POL + SLL (12.73%). Linoleic acid (60.69%) was the dominant fatty acid, followed by oleic (21.42%) and palmitic (12.76%) acids, respectively. A high level of sterols making up 16.06 g/kg seed oil was present. The sterol marker, β-sitosterol, accounted for 71.60% of the total sterol content in the seed oil. Among the tocopherols present in the oil, γ-tocopherol (421.08 mg/kg) was the main constituent.

Key words

Opuntia ficus indica seed oil fatty acids triacylglycerols sterols tocopherols 

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Copyright information

© Springer Science+Business Media, Inc. 2009

Authors and Affiliations

  • I. El Mannoubi
    • 1
    Email author
  • S. Barrek
    • 1
  • T. Skanji
    • 1
  • H. Casabianca
    • 2
  • H. Zarrouk
    • 1
  1. 1.Institut National de Recherche et d′Analyse Physico-chimiqueSidi ThabetTunisia
  2. 2.Service central d′Analyse du CNRSVernaisonFrance

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