Abstract
Seeds of Androsace septentrionalis of the genus Androsace (tribus Primuleae) from the plant family Primulaceae were studied for their oil content and FA composition. The seed oil of A. septentrionalis was found to contain two unusual FA rarely occurring in plants: 11-cis-hexadecenoic acid (16∶1Δ11c or 16∶1n−5) and 9-cis,12-cis-hexadecadienoic acid (16∶2Δ9c,12c or 16∶2n−4). It also contained an unusually high amount (21.4%) of 9-cis-hexadecenoic acid (palmitoleic acid; 16∶1Δ9c or 16∶1n−7), i.e., at a level higher than that of oleic acid, in addition to common FA. Compared with most plant seed oils, at 3.8% the level of 18∶1Δ11c (or 18∶1n−7) also was elevated. The nonidentity of the Androsace 16∶2-acid with the 16∶2-acid, which is very typical for Ranunculus spp., as well as its identity with the 16∶2-acid typically found in Asclepiadaceae was established by co-chromatography. The structure and composition of the constituent FA of A. septentrionalis were also determined by various chromatographic methods (TLC, Ag+-TLC, capillary GLC) and spectroscopic methods (IR, GC-MS). The significant deviation of the Androsace FA pattern from that of other Primuleae, indicating a separate phylogenetic position of Androsace, is discussed.
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Abbreviations
- DMDS:
-
dimethyldisulfide adducts
- DMOX:
-
4,4-dimethyloxazoline derivatives
- PRV:
-
peak recognition value
- SOFA:
-
seed oil FA (for SOFA database, go to netlink <www.bagkf.de/SOFA>)
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Tsevegsuren, N., Aitzetmuller, K. & Vosmann, K. Isomers of hexadecenoic and hexadecadienoic acids in Androsace septentrionalis (Primulaceae) seed oil. Lipids 38, 1173–1178 (2003). https://doi.org/10.1007/s11745-003-1176-8
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DOI: https://doi.org/10.1007/s11745-003-1176-8