Development of a MHS-SPME-GC/MS method for analysis of volatile compositon of Tawny Port wine.

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dc.contributor.authorMilheiro, Julianapt_PT
dc.contributor.authorSiopa, Joãopt_PT
dc.contributor.authorS. Ferreira, Sandrinept_PT
dc.contributor.authorVilela, Alice Maria Correiapt_PT
dc.contributor.authorFraga, Irenept_PT
dc.contributor.authorInês, Antóniopt_PT
dc.contributor.authorMatos, Carlospt_PT
dc.contributor.authorCoutinho, Joãopt_PT
dc.contributor.authorCosme, Fernandapt_PT
dc.contributor.authorM. Nunes, Fernandopt_PT
dc.date.accessioned2018-08-29T10:14:47Z
dc.date.available2018-08-29T10:14:47Z
dc.date.issued2017-12-06
dc.description.abstractPort wine is a fortified wine produced in the Douro Demarcated Region (DDR) of Portugal, widely known throughout the world. This type of wine is produced from authorized grape varieties grown in the DDR and by a specific winemaking practice. Particularly, Tawny Port wines are stored in small wood barrels during several years and bottled at commercialization time [1]. The extent of the aging process is essential to the quality of the final product. In this oxidative aging process, Tawny Port wine undergoes through many changes in colour and aroma, with the levels of some compounds decreasing over time while other increase or appear [2]. Some of the compounds formed or accumulated over the aging time can be considered age markers being the wine aging process a complex system [3], so it is important to know more about the evolution of the aroma composition of Tawny Port wines. In line with that, it is necessary the optimization of a method to identify the compounds present in Tawny Port wines aroma. Some parameters like sample dilution, extraction temperature and time and ionic strength effect from adding different amounts of NaCl were optimized using a four three-level box factorial with three blocks design to determine the optimal experimental conditions for analysing the volatile compounds in Tawny Port wine aroma by HS-SPME-GC/MS (headspace - solid phase microextraction – gas chromatography mass spectrometry) using a DVB/CAR/PDMS fibre. The optimal conditions were as follows: sample dilution of 5 mL of wine to 5 mL of water with 3.5 g of NaCl and the extraction during 90 min at 30 °C. In order to eliminate possible matrix interferences, MHS-SPME (multiple headspace - solid phase microextraction) was performed to analyse Tawny Port wine samples.pt_PT
dc.description.sponsorshipThe authors gratefully acknowledge INNPORT – PA 55333 project and Chemical Research Center (CQ‐VR) for the financial support. Additional thanks to the Projet NORTE‐01‐0145‐FEDER‐000038 (I&D INNOVINE&WINE – Innovation Platform of Vine & Wine).pt_PT
dc.identifier.citationJuliana Milheiro, João Siopa, Sandrine S. Ferreira, Alice Vilela, Irene Fraga, António Inês, Carlos Matos, João Coutinho Fernanda Cosme, Fernando M. Nunes (2017). Development of a MHS-SPME-GC/MS method for analysis of vola6le composi6on of Tawny Port wine. Poster PC-107 apresentado no 10º Encontro Nacional de Cromatografia, Bragança 2017 – 4 a 6 de dezembro, p. 175​pt_PT
dc.identifier.urihttp://hdl.handle.net/10348/8667
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relation.ispartofCQ - Centro de Químicapt_PT
dc.rightsopen accesspt_PT
dc.subjectPort Winespt_PT
dc.subjectvolatile compositionpt_PT
dc.titleDevelopment of a MHS-SPME-GC/MS method for analysis of volatile compositon of Tawny Port wine.pt_PT
dc.typeconferenceObjectpt_PT
degois.publication.firstPagep. 175pt_PT
degois.publication.locationBragançapt_PT
degois.publication.title10º Encontro Nacional de Cromatografiapt_PT
dspace.entity.typePublicationen
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