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  • 1970-1974  (3)
Materialart
Erscheinungszeitraum
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 36 (1971), S. 0 
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: SUMMARY —Investigations were undertaken to characterize the volatiles collected from heated boar fat, particularly those components responsible for swine sex odor (SSO). Boar fat volatiles were collected by heating (to 150°C) the ground carcass fat in an all glass distillation apparatus with a liquid nitrogen trap attached. The condensed moisture and liquid nitrogen trap contents were combined and continuously extracted for 48 hr with diethyl ether. The ether was evaporated on a steam bath and the residue subjected to olfactory-gas chromatographic analysis by using a heated collection vent and a flame ionization detector. Using this analytical technique, a perspiration-like odor was detected resembling the SSO that normally emanates from heated boar fat. Further analysis using a gas chromatograph-mass spectrometer unit gave a molecular ion of 272 for this peak and major fragmentation ions identical to a 5a-androst-16-en-3-one standard. This standard was obtained by chromic acid oxidation of 3a-hydroxy-5a-androst-16-ene. Other types of odors were also noted in the boar fat volatile mixture, including those resembling perfume, wood, onion, musk and “Ivory” soap. This research demonstrated the presence of a unique smelling steroid accounting for the perspiration-like odor of heated boar fat. Furthermore, it has shown that the SSO component can be isolated directly from boar adipose tissue at normal cooking temperatures and atmospheric pressure.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 37 (1972), S. 0 
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 3
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 36 (1971), S. 0 
    ISSN: 1750-3841
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: SUMMARY— Three different studies were conducted to evaluate the accuracy and reliability of a widely accepted method for determining organochlorine pesticide residues in animals' tissues. These investigations involved laboratories of both state and federal regulatory agencies. Various adipose tissues, heat-extracted and non-heat-extracted, spiked and unspiked samples were analyzed by these laboratories. Results of these studies demonstrated many inaccuracies and inconsistencies associated with using the current method. The laboratory performing the analysis, as well as the tissue sample used, was shown to significantly (P 〈 .05) affect the results. Further, the heat-extraction phase, as well as the subsequent analytical phase of the method, was observed (P 〈 .05) to present problems of repeatability.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
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