dc.contributor.author |
Naude, Yvette
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dc.contributor.author |
Van Aardt, Marleen
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dc.contributor.author |
Rohwer, Egmont Richard
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dc.date.accessioned |
2011-03-04T11:00:24Z |
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dc.date.available |
2011-03-04T11:00:24Z |
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dc.date.issued |
2009-04 |
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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 |
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dc.identifier.issn |
1873-3778 (online) |
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dc.identifier.other |
10.1016/j.chroma.2008.09.065 |
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dc.identifier.uri |
http://hdl.handle.net/2263/15967 |
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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 |