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Chemical composition and lipid fraction characteristics of aleppo pine (Pinus halepensis Mill.) seeds cultivated in Tunisia

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Publication Date
Keywords
  • Life Sciences :: Food Science [F09]
  • Sciences Du Vivant :: Sciences Des Denrées Alimentaires [F09]
Disciplines
  • Biology
  • Pharmacology

Abstract

Chemical Composition and Lipid Fraction Characteristics of Aleppo Pine (Pin us halepensis Mill.) Seeds Cultivated in Tunisia S. Cheikh-Rouhou,' B. Hentati,' S. Besbes,':" C. Blecker,3 C. Deroanne" and H. Attia' 1Unité Analyses Alimentaires, Ecole Nationale d'Ingénieurs de Sfax, Route de Soukra 3038 Sfax, Tunisia 2 Unité de Biotechnologie et Pathologie, Institut Supérieur de Biotechnologie de Sfax, Route de Soukra 3038 Sfax, Tunisia "Unitë de Technologie des Industries Agro-alimentaires, Faculté Universitaire des Sciences Agronomiques de Gembloux, passage des Déportés 2, 5030 Gembloux, Belgium The proximale composition of Aleppo pine (Pinus halepensis Mill.) seeds cultivated in Bizerta (Tunisia) were investigated for their fatty acid composition, and their thermal and physical properties of lipid frac- tion. The proximate analysis of pine seeds showed the following composition (on a dry-weight basis): protein 22.7%, oil 43.3%. ash 8.3% and total carbohydrate 25.7%. Potassium. magnesium and calcium were the predominant mineraI elements present in the seeds and reached, together, about 1%. Oleic and linoleic acids were the major unsaturated fatty acids (27.3 and 48.8%, respectively), while the main satu- rated one was palmitic acid (8.75%). Myristic. rnyristoleic. palmitoleic, margaric, margaroleic, stearic, linolenic, arachidic, eicosenoic, eicosadienoic eicosatrienoic behenic and lignoceric acids were also detected. Thermal profile of Pinus halepensis Mill. seed oil, determined by its DSC melting curve, showed that the en tire liquefaction of the Aleppo pine seed oil occurs at -8°C. CieLab colour para- meters (L", a*. b*). oxidative stability by Rancimat test and viscosity were also determined. Physico- chernical properties of the oil include: saponification nurnber J 90, peroxide value 3.18. iodine index 1J 7, and a low acidity of 0.61 %. Results suggested that the production of oil from Pinus halepensis seeds could provide a potential use in food, pharmaceutical, cosmetics and other non-

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