Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.13/905
Título: Screening of volatile composition from portuguese multifloral honeys using headspace solid-phase microextraction-gas chromatography–quadrupole mass spectrometry
Autor: Pontes, M.
Marques, J. C.
Câmara, J. S.
Palavras-chave: Honey
Volatile compounds
Solid-phase microextraction
GC–qMS
.
Faculdade de Ciências Exatas e da Engenharia
Data: Nov-2007
Editora: Elsevier
Citação: Pontes, M., Marques, J. C., & Câmara, J. S. (2007). Screening of volatile composition from portuguese multifloral honeys using headspace solid-phase microextraction-gas chromatography–quadrupole mass spectrometry. Talanta, 74(1), 91-103.
Resumo: The volatile composition from four types of multifloral Portuguese (produced in Madeira Island) honeys was investigated by a suitable analytical procedure based on dynamic headspace solid-phase microextraction (HS-SPME) followed by thermal desorption gas chromatography–quadrupole mass spectrometry detection (GC–qMS). The performance of five commercially available SPME fibres: 100 μm polydimethylsiloxane, PDMS; 85 μm polyacrylate, PA; 50/30 μm divinylbenzene/carboxen on polydimethylsiloxane, DVB/CAR/PDMS (StableFlex); 75 μm carboxen/polydimethylsiloxane, CAR/PDMS, and 65 μm carbowax/divinylbenzene, CW/DVB; were evaluated and compared. The highest amounts of extract, in terms of the maximum signal obtained for the total volatile composition, were obtained with a DVB/CAR/PDMS coating fibre at 60 °C during an extraction time of 40 min with a constant stirring at 750 rpm, after saturating the sample with NaCl (30%). Using this methodology more than one hundred volatile compounds, belonging to different biosynthetic pathways were identified, including monoterpenols, C13-norisoprenoids, sesquiterpenes, higher alcohols, ethyl esters and fatty acids. The main components of the HS-SPME samples of honey were in average ethanol, hotrienol, benzeneacetaldehyde, furfural, trans-linalool oxide and 1,3-dihydroxy-2-propanone.
Peer review: yes
URI: http://hdl.handle.net/10400.13/905
DOI: 10.1016/j.talanta.2007.05.037
Aparece nas colecções:Artigos em revistas internacionais

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