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  • 1
    Electronic Resource
    Electronic Resource
    Double-bond location in monounsaturated fatty acids by dimethyl disulfide derivatization and mass spectrometry: Application to analysis of fatty acids in pheromone glands of four lepidoptera (1985)
    Springer
    Journal of chemical ecology 11 (1985), S. 265-277 
    Details
    ISSN: 1573-1561
    Keywords: Fatty acid analysis ; double-bond location ; dimethyl disulfide adducts ; mass spectrometry ; pheromone ; Choristoneura fumiferana ; C. occidentalis ; C. pinus pinus ; Plusia chalcites ; Lepidoptera ; Tortricidae ; Noctuidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A rapid analytical procedure for the determination of the position of double bonds in mixtures of monounsaturated fatty acid methyl esters has been developed. The method is based on direct capillary GC-MS-EI analysis of dimethyl disulfide adducts. The procedure was applied to mixtures of monounsaturated fatty esters from pheromone gland extracts of three tortricids from theChoristoneura genus,C. fumiferana, C. occidentalis, andC. pinus pinus, and one noctuid from the Plusiinae subfamily,Plusia chalcites. A correlation was found between the known major pheromone components in the four species with the corresponding fatty acids. Some of the additional fatty acids may be precursors to as yet unidentified minor pheromone components, present in extremely small quantities, in these species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01411414
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  • 2
    Electronic Resource
    Electronic Resource
    Identification of sex pheromone component of spruce budmothZeiraphera canadensis (1989)
    Springer
    Journal of chemical ecology 15 (1989), S. 2435-2444 
    Details
    ISSN: 1573-1561
    Keywords: Zeiraphera canadensis ; spruce budmoth ; (E)-9-tetradecenyl acetate ; sex pheromone ; Lepidoptera ; Tortricidae ; Eucosminae ; trapping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The analyses of virgin female sex pheromone gland extracts by gas chromatography (GC), GC-electroantennographic detection (GC-EAD) and GC-mass spectrometry (GC-MS) followed by field-trapping experiments, have identified (E)-9-tetradecenyl acetate (E9–14:Ac) as the primary sex pheromone component of the spruce budmoth,Zeiraphera canadensis. Dosages of 1.0–100.0 ⧎g ofE9–14:Ac impregnated in rubber septa provide effective trap baits.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01020374
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Trimerization ofEarias insulana sex pheromone, (E,E)-10,12-Hexadecadienal, A phenomenon affecting trapping efficiency (1984)
    Springer
    Journal of chemical ecology 10 (1984), S. 421-428 
    Details
    ISSN: 1573-1561
    Keywords: Earias insulana ; spiny bollworm ; Lepidoptera ; Noctuidae ; sex pheromone ; (E,E)-10,12-hexadecadienal ; trimerization ; Chromatographic analysis ; nuclear magnetic resonance ; mass spectrometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The sex pheromone ofEarias insulana, (E,E)-10,12-hexadecadienal, may trimerize extensively to form a crystalline trioxane derivative. The structure of the trimer was deduced from its CI-MS and NMR spectra. Capillary GC analysis resulted in the thermal decomposition of the trimer to the monomer. This process could be studied on a 2-m packed column under specific conditions. A convenient separation between the pheromone and its trimer was achieved by TLC. The trimer was inactive in the field, and it has a harmful effect on the performance of the polyethylene dispenser. Material which contains large amounts of the trimer is unsuitable for field use, even if applied at high dosage. The pheromone should be analyzed by NMR or TLC in addition to GC in order to detect the presence of its trimer. The trimerization process is catalyzed by acid which should therefore be completely eliminated from the storing vessels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988089
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    Paper (German National Licenses)
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