Achtung: hohPublica wurde am 18.11.2024 aktualisiert. Falls Sie auf Darstellungsfehler stoßen, löschen Sie bitte Ihren Browser-Cache (Strg + Umschalt + Entf). *** Attention: hohPublica was last updated on November 18, 2024. If you encounter display errors, please delete your browser cache (Ctrl + Shift + Del).

Institut für Lebensmittelchemie

Permanent URI for this collectionhttps://hohpublica.uni-hohenheim.de/handle/123456789/8

Browse

Browsing Institut für Lebensmittelchemie by Person "Müller, Franziska"

Type the first few letters and click on the Browse button
Now showing 1 - 2 of 2
  • Thumbnail Image
    Publication
    Furan fatty acid amounts and their occurrence in triacylglycerols of white asparagus (Asparagus officinalis) from the German market
    (2023) Müller, Franziska; Bauer, Vanessa; Vetter, Walter
    Vegetables including asparagus contain a wide range of fatty acids, mainly stored in triacylglycerols. One class of interesting minor fatty acids is the family of furan fatty acids (FuFAs) because of their antioxidant properties. Since FuFAs have not been studied previously in asparagus (Asparagus officinalis L.), we developed and applied a simplified method for their analysis in 20 fresh and three preserved samples. Four FuFAs were detected with clear dominance of the dimethyl‐substituted FuFAs (D‐FuFAs) 11D5 and 9D5 as well as small amounts of the monomethyl‐substituted FuFAs (M‐FuFAs) 11M5 and 9M5. The total amounts of FuFAs in fresh white asparagus ranged from 1.4 to 4.6 mg/100 g dry weight (mean 3.0 mg/100 g dry weight). Subsequent LC‐Q‐Orbitrap‐HRMS measurements enabled the detection of 22 different FuFA‐containing TAGs. These were predominantly found together with one or two polyunsaturated fatty acid.
  • Thumbnail Image
    Publication
    Geometrical and positional isomers of unsaturated furan fatty acids in food
    (2022) Müller, Franziska; Hammerschick, Tim; Vetter, Walter
    Furan fatty acids (FuFA) are important antioxidants found in low concentrations in many types of food. In addition to conventional FuFA which normally feature saturated carboxyalkyl and alkyl chains, a few previous studies indicated the FuFA co‐occurrence of low shares of unsaturated furan fatty acids (uFuFA). For their detailed analysis, the potential uFuFA were enriched by centrifugal partition chromatography (CPC) or countercurrent chromatography (CCC) followed by silver ion chromatography from a 4,7,10,13,16,19‐docosahexaenoic acid ethyl ester oil, a 5,8,11,14,17‐eicosapentaenoic acid ethyl ester oil and a latex glove extract. Subsequent gas chromatography with mass spectrometry (GC/MS) analysis enabled the detection of 16 individual uFuFA isomers with a double bond in conjugation with the central furan moiety. In either case, four instead of two uFuFA isomers previously reported in food, respectively, were detected by GC/MS. These isomers showed characteristic elution and abundance patterns in GC/MS chromatograms which indicated the presence of two pairs of cis/trans‐isomers (geometrical isomers).