Triacylglycerol composition of oil from <Emphasis Type="Italic">Pistacia atlantica</Emphasis> fruit growing in Algeria |
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Authors: | Email author" target="_blank">M?YousfiEmail author B?Nadjemi R?Belal I?Bombarda E?M?Gaydou |
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Affiliation: | 1.Laboratoire des Sciences Fondamentales,Université Amar Telidji,Laghouat,Algérie;2.Ecole normale supérieure,Alger,Algérie;3.Laboratoire de Chimie Physique Moléculaire et macromoléculaire, Faculté des Sciences,Université de Blida,Algérie;4.Equipe Phytochimie, UMR CNRS 6171,Université Paul Cézanne, Faculté des Sciences et Techniques Saint Jér?me,Marseille,France |
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Abstract: | The distribution of FA between the sn-2 and sn-1,3 positions of TAG from Pistacia atlantica fruit oil of Algeria has been determined. Unsaturated FA showed a preference for the internal position. Linoleic and oleic
acids occurred predominantly in the sn-2 position with lesser amounts evenly distributed between the sn-1 and sn-3 positions, as generally found in vegetable oils. The oil was found to contain TAG that were trisaturated (0.93%), disaturated
(15.06%), monosaturated (44.64%), and triunsaturated (38.10%). The distribution of the TAG calculated using the lipase hydrolysis
technique is slightly different from that determined with HPLC. This is particularly true for trioleoyl and trilinoleoylglycerols.
In contrast, the agreement between theory and experiment is good for TAG containing two palmitoyl and one oleoyl, one oleoyl
and two linoleoyl, and one palmitoyl and two oleoyl chains. |
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Keywords: | Fatty acids HPLC lipase Pistacia atlantica oil stereospecific analysis triacylglycerols |
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