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Triacylglycerol composition of oil from Pistacia atlantica fruit growing in Algeria
Author(s) -
Yousfi M.,
Nadjemi B.,
Belal R.,
Bombarda I.,
Gaydou E. M.
Publication year - 2005
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-005-1048-7
Subject(s) - pistacia , composition (language) , chemistry , lipase , hydrolysis , linoleic acid , food science , glyceride , oleic acid , botany , chromatography , biology , fatty acid , biochemistry , enzyme , linguistics , philosophy
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.