Multi-channel open tubular traps for headspace sampling, gas chromatographic fraction collection and olfactory assessment of milk volatiles
dc.contributor.author | Naude, Yvette | |
dc.contributor.author | Van Aardt, Marleen | |
dc.contributor.author | Rohwer, Egmont Richard | |
dc.contributor.email | yvette.naude@up.ac.za | en_US |
dc.date.accessioned | 2011-03-04T11:00:24Z | |
dc.date.available | 2011-03-04T11:00:24Z | |
dc.date.issued | 2009-04 | |
dc.description.abstract | A 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.sponsorship | The authors thank Sasol for the financial support. | en_US |
dc.identifier.citation | Naude, 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.issn | 0021-9673 | |
dc.identifier.issn | 1873-3778 (online) | |
dc.identifier.other | 10.1016/j.chroma.2008.09.065 | |
dc.identifier.uri | http://hdl.handle.net/2263/15967 | |
dc.language.iso | en | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | © 2008 Elsevier B.V. All rights reserved. | en_US |
dc.subject | Capillary gas chromatography | en |
dc.subject | Sorptive extraction and collection | en |
dc.subject | Headspace sampling | en |
dc.subject | Aroma constituents | en |
dc.subject | Milk volatiles | en |
dc.subject.lcsh | Polydimethylsiloxane | en |
dc.subject.lcsh | Olfactometry | en |
dc.subject.lcsh | Gas chromatography | en |
dc.subject.lcsh | Aromatic compounds | en |
dc.subject.lcsh | Milk -- Flavor and odor | en |
dc.title | Multi-channel open tubular traps for headspace sampling, gas chromatographic fraction collection and olfactory assessment of milk volatiles | en |
dc.type | Postprint Article | en |