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Evaluation of the solid phase microextraction (SPME) technique for the analysis of human breath during eating Inra
Pionnier, E.; Sémon, E.; Chabanet, C.; Salles, C..
Une méthode de couplage microextraction sur phase solide/chromatographie en phase gazeuse/spectrométrie de masse (SPME-GC-MS) a été utilisée comme alternative à l'analyse par API-MS des effluves nasales pour suivre la libération de composés d'arômes présents dans l'air expiré pendant la dégustation d'un fromage modèle aromatisé avec du diacétyle, de l'heptan-2-one, de l'hexanoate d'éthyle, de l'heptan-2-ol, de l'acide propanoïque et de l'acide butanoïque. Cinq types de fibres possédant un greffage différent ont été évalués pour leur sélectivité, sensibilité, stabilité et les phénomènes de compétition. Parmi ceux-ci, la fibre greffée avec un polymère de type polydiméthylsiloxane (PDMS) était la plus appropriée. Une méthode basée sur un temps...
Tipo: Journal Article Palavras-chave: SPME; PDMS; NOSESPACE; FLAVOR; API-MS; MODEL CHEESE.
Ano: 2005 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200874abac5c&uri=/notices/prodinra1/2008/11/
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Extended evaluation of polymeric and lipophilic sorbents for passive sampling of marine toxins ArchiMer
Zendong, Zita; Herrenknecht, Christine; Abadie, Eric; Brissard, Charline; Tixier, Celine; Mondeguer, Florence; Sechet, Veronique; Amzil, Zouher; Hess, Philipp.
Marine biotoxins are algal metabolites that can accumulate in fish or shellfish and render these foodstuffs unfit for human consumption. These toxins, released into seawater during algal occurrences, can be monitored through passive sampling. Acetone, methanol and isopropanol were evaluated for their efficiency in extracting toxins from algal biomass. Isopropanol was chosen for further experiments thanks to a slightly higher recovery and no artifact formation. Comparison of Oasis HLB, Strata-X, BondElut C18 and HP-20 sorbent materials in SPE-mode led to the choice of Oasis HLB, HP-20 and Strata-X. These three sorbents were separately exposed as passive samplers for 24 h to seawater spiked with algal extracts containing known amounts of okadaic acid (OA),...
Tipo: Text Palavras-chave: Passive sampling; Oasis HLB; Strata-X; LOPE; PDMS; SPATT.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00186/29756/28187.pdf
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