Multi-channel open tubular traps for headspace sampling, gas chromatographic fraction collection and olfactory assessment of milk volatiles

dc.contributor.authorNaude, Yvette
dc.contributor.authorVan Aardt, Marleen
dc.contributor.authorRohwer, Egmont Richard
dc.contributor.emailyvette.naude@up.ac.zaen_US
dc.date.accessioned2011-03-04T11:00:24Z
dc.date.available2011-03-04T11:00:24Z
dc.date.issued2009-04
dc.description.abstractA headspace sampling method is described for concentrating milk volatiles onto a multi-channel open tubular silicone rubber trap (MCT) for thermal desorption into a GC-FID. Sections of the chromatographic profile, single peaks or combinations of compounds are recaptured with secondary MCTs during a subsequent run. The recaptured aroma is released in a controlled manner by heating the MCT in a portable heating device. An aroma release window of several minutes allows up to six people the opportunity to sniff each aroma fraction more than once. Olfactory results suggest that a synergistic combination of 2-heptanone and 2-nonanone could be responsible for a pungent cheese, sour milk-like aroma. MCTs containing single components or fractions can be desorbed into a GC–MS for compound identification.en
dc.description.sponsorshipThe authors thank Sasol for the financial support.en_US
dc.identifier.citationNaude, Y, Van Aardt, M & Rohwer, ER 2009, 'Multi-channel open tubular traps for headspace sampling, gas chromatographic fraction collection and olfactory assessment of milk volatiles', Journal of Chromatography A, vol. 1216, no. 14, pp. 2798-2804. [www.elsevier.com/locate/chroma]en
dc.identifier.issn0021-9673
dc.identifier.issn1873-3778 (online)
dc.identifier.other10.1016/j.chroma.2008.09.065
dc.identifier.urihttp://hdl.handle.net/2263/15967
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.rights© 2008 Elsevier B.V. All rights reserved.en_US
dc.subjectCapillary gas chromatographyen
dc.subjectSorptive extraction and collectionen
dc.subjectHeadspace samplingen
dc.subjectAroma constituentsen
dc.subjectMilk volatilesen
dc.subject.lcshPolydimethylsiloxaneen
dc.subject.lcshOlfactometryen
dc.subject.lcshGas chromatographyen
dc.subject.lcshAromatic compoundsen
dc.subject.lcshMilk -- Flavor and odoren
dc.titleMulti-channel open tubular traps for headspace sampling, gas chromatographic fraction collection and olfactory assessment of milk volatilesen
dc.typePostprint Articleen

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