Taxonomy of Pinus species based on the seed oil fatty acid compositions |
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Authors: | R L Wolff Bernard Comps Anne M Marpeau Laurent G Deluc |
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Institution: | (1) ISTAB, Laboratoire de Lipochimie Alimentaire, Université Bordeaux 1, Avenue des Facultés, F-33405 Talence cedex, France Fax: 33 05 56 37 03 36, FR;(2) Laboratoire d’Ecologie Génétique, Université Bordeaux 1, Avenue des Facultés, F-33405 Talence cedex, France, FR;(3) Laboratoire de Physiologie Cellulaire Végétale, Université Bordeaux 1, Avenue des Facultés, F-33405 Talence cedex, France, FR |
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Abstract: | The fatty acid compositions of the seed oils from ten pine species have been established by capillary gas-liquid chromatography
of the methyl esters. With regard to either normal fatty acids or Δ5-olefinic acids, the general pattern of fatty acids did
not differ from that of other pine seed oils reported previously. The main fatty acid was linoleic (9,12–18:2) acid (44.4–57.1%),
followed by either oleic (9–18:1) acid (13.4–24.5%) or pinolenic (5,9,12–18:3) acid (1.5–25.2%). When applying multivariate
analyses to the chemometric data (13 variables) of 49 pine species (ca. 40% of the living pine species), it was possible to
distinguish between several sections: Pinea, Longifolia, Halepensis, Ponderosa-Banksiana, Sylvestris, and Cembra. The latter section was clearly divided into two sub-groups. A few species that presented a low overall content of Δ5-olefinic
acids, and that grow in warm-temperate regions, were isolated from the bulk of other pine species. It is hypothesized that
Δ5-olefinic acids might be related to cold-acclimation.
Received: 5 June 1997 / Accepted: 17 August 1997 |
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Keywords: | Fatty acid composition Δ 5-olefinic acids Pine seed oil Taxonomy |
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