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Development of a dynamic headspace solid-phase microextraction procedure coupled to GC–qMSD for evaluation the chemical profile in alcoholic beverages

2008-02Journal article Open access
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dc.contributor.authorRodrigues, F.
dc.contributor.authorCaldeira, M.
dc.contributor.authorCâmara, J. S.
dc.date.accessioned2015-11-27T15:09:03Z
dc.date.available2015-11-27T15:09:03Z
dc.date.issued2008-02
dc.description.abstractIn the present study, a simple and sensitive methodology based on dynamic headspace solid-phase microextraction (HS-SPME) followed by thermal desorption gas chromatography with quadrupole mass detection (GC–qMSD), was developed and optimized for the determination of volatile (VOCs) and semi-volatile (SVOCs) compounds from different alcoholic beverages: wine, beer and whisky. Key experimental factors influencing the equilibrium of the VOCs and SVOCs between the sample and the SPME fibre, as the type of fibre coating, extraction time and temperature, sample stirring and ionic strength, were optimized. The performance of five commercially available SPME fibres was evaluated and compared, namely polydimethylsiloxane (PDMS, 100 μm); polyacrylate (PA, 85 μm); polydimethylsiloxane/divinylbenzene (PDMS/DVB, 65 μm); carboxen™/polydimethylsiloxane (CAR/PDMS, 75 μm) and the divinylbenzene/carboxen on polydimethylsiloxane (DVB/CAR/PDMS, 50/30 μm) (StableFlex). An objective comparison among different alcoholic beverages has been established in terms of qualitative and semi-quantitative differences on volatile and semi-volatile compounds. These compounds belong to several chemical families, including higher alcohols, ethyl esters, fatty acids, higher alcohol acetates, isoamyl esters, carbonyl compounds, furanic compounds, terpenoids, C13-norisoprenoids and volatile phenols. The optimized extraction conditions and GC–qMSD, lead to the successful identification of 44 compounds in white wines, 64 in beers and 104 in whiskys. Some of these compounds were found in all of the examined beverage samples. The main components of the HS-SPME found in white wines were ethyl octanoate (46.9%), ethyl decanoate (30.3%), ethyl 9-decenoate (10.7%), ethyl hexanoate (3.1%), and isoamyl octanoate (2.7%). As for beers, the major compounds were isoamyl alcohol (11.5%), ethyl octanoate (9.1%), isoamyl acetate (8.2%), 2-ethyl-1-hexanol (5.9%), and octanoic acid (5.5%). Ethyl decanoate (58.0%), ethyl octanoate (15.1%), ethyl dodecanoate (13.9%) followed by 3-methyl-1-butanol (1.8%) and isoamyl acetate (1.4%) were found to be the major VOCs in whisky samples.pt_PT
dc.identifier.citationRodrigues, F., Caldeira, M., & Camara, J. S. (2008). Development of a dynamic headspace solid-phase microextraction procedure coupled to GC–qMSD for evaluation the chemical profile in alcoholic beverages. Analytica chimica acta, 609(1), 82-104.pt_PT
dc.identifier.doi10.1016/j.aca.2007.12.041pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/916
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.subjectVolatile and semi-volatile compoundspt_PT
dc.subjectHeadspace solid-phase microextractionpt_PT
dc.subjectWhite winept_PT
dc.subjectBeerpt_PT
dc.subjectWhiskypt_PT
dc.subjectGC–qMSpt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleDevelopment of a dynamic headspace solid-phase microextraction procedure coupled to GC–qMSD for evaluation the chemical profile in alcoholic beveragespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage104pt_PT
oaire.citation.startPage82pt_PT
oaire.citation.titleAnalytica Chimica Actapt_PT
oaire.citation.volume609(1)pt_PT
person.familyNameCaldeira
person.familyNameCâmara
person.givenNameMichael
person.givenNameJosé
person.identifierG-3003-2013
person.identifier.ciencia-id481C-08CE-90E5
person.identifier.orcid0000-0001-5371-7281
person.identifier.orcid0000-0003-1965-3151
person.identifier.ridA-2461-2013
person.identifier.scopus-author-id16300962200
person.identifier.scopus-author-id10140393000
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationce73ce9c-932a-404b-93fe-cfefd5181554
relation.isAuthorOfPublicatione10d78be-e547-4d25-92b5-06a997ed78da
relation.isAuthorOfPublication.latestForDiscoverye10d78be-e547-4d25-92b5-06a997ed78da

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