African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12487

Full Length Research Paper

Characterization and quantification of phenolic compounds of extra-virgin olive oils according to their blending proportions

Youssef Ouni*
  • Youssef Ouni*
  • Laboratoire Caractérisation et Qualité de l’huile d’Olive, Centre de Biotechnologie de Borj-Cedria, B.P. 901, 2050 Hammam-Lif, Tunisia.
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Mokhtar Guerfel
  • Mokhtar Guerfel
  • Laboratoire Caractérisation et Qualité de l’huile d’Olive, Centre de Biotechnologie de Borj-Cedria, B.P. 901, 2050 Hammam-Lif, Tunisia.
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Linda Ben Yahia
  • Linda Ben Yahia
  • High School of Food Industry of Tunisia, Laboratory of Preservation and Valorisation of Food Products, 58, Rue Alain SAVARY, Cité Elkhadra, Tunis 1003, Tunisie.
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Mokhtar Zarrouk
  • Mokhtar Zarrouk
  • Laboratoire Caractérisation et Qualité de l’huile d’Olive, Centre de Biotechnologie de Borj-Cedria, B.P. 901, 2050 Hammam-Lif, Tunisia.
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  •  Accepted: 12 July 2012
  •  Published: 19 March 2014

Abstract

Chemlali olive oil was blended with oils obtained from Oueslati and Chetoui varieties to improve the quality of the former one. Parameters such as triacylglycerols and phenolic compounds were characterized for various blends of Chemlali x Oueslati and Chemlali x Chetoui. Results show that blended oils had an improved composition as compared to that of Chemlali. In fact, the highest percentage of Oueslati and Chetoui olive oils (60% of blending) could lead to 1,2,3-trioleylglycerol (OOO) of up to 30.20 and 33.44%, respectively. The amount of aldehydic form of oleuropeine aglucon was higher when Chemlali was blended using either 40 or 60% of Chetoui olive oil (from 99.17 to 299.63 and 334.16 mg kg-1).

 

Key words: Oil blending, Chemlali x Oueslati, Chemlali x Chetoui, phenolic fraction, triacylglycerols.

Abbreviation

Abbreviations: VOO, Virgin olive oil; LLL, 1,2,3-trilinoleylglycerol; LnLO, 1-oleyl-2-linoleyl-3-linolenoylglycerol; LLO, 1,2 dilinoleyl-3-oleylglycerol; LOO, 1,2-dioleyl-3-linoleyglycerol; OLnO, 1,2-dioleyl-3-linolenoylglycerol; LnOP, 1-palmitoyl-2-linolenoyl-3-oleylglycerol; LLP, 1-palmitoyl-2,3-dilinoleyl-glycerol; L, 1,2-dioleyl-3-linoleyglycerol; POL, 1-palmitoyl-2-oleyl-3-linoleylglycerol; OOO, 1,2,3-trioleylglycerol; POO, 1-palmitoyl-2,3-dioleyl-glycerol; SOO, 1-stearoyl-2,3-dioleyl-glycerol; SOP, 1-stearoyl-2-palmitoyl-3-oleylglycerol; AOO, 1-arachidoyl-2,3-dioleyl-glycerol.

Copyright © 2024 Author(s) retain the copyright of this article.

This article is published under the terms of the Creative Commons Attribution License 4.0

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