Investigations on wine bouquet components by solid‐phase microextration ‐capillary gas chromatography (SMPE‐CGC) using different fibers

Abstract

The extraction of wine bouquet components with solid-phase microextraction (SPME) using different fibers was studied. Polyacrylate fibers (PA-85) achieve the most complete bouquet profiles. About ninety substances were identified by capillary gas chromatography-MS and their retention factors were calculated to allow peak identification in capillary-GC-FID chromatograms. The terpene profiles of different wines were recorded by SPME (PA-85)-CGC-FID.

Quantitative determination and characterisation of the main odourants of Mencía monovarietal red wines

“…Two types of fibres (PA and DVB-CAR-PDMS), among those used most routinely for assaying wine volatiles, were also tested taking account of the physico-chemical characteristics of the target compounds under consideration. In agreement with published results, PA fibre showed an effective extraction for polar compounds such as alcohols of low molecular weight (Begala, Corda, Podda, Fedrigo, & Traldi, 2002;Martí et al, 2003;Rocha, Ramalheira, Barros, Delgadillo, & Coimbra, 2001;Vaz Freire, Costa Freitas, & Relva, 2001), higher alcohols, fatty acids (Perestrelo et al, 2008) and terpenes (De la Calle García et al, 1997;Rocha et al, 2001;Vaz Freire et al, 2001); on the other hand, previous works confirmed that DVB-CAR-PDMS is a versatile fibre, as it is highly sensitive for different chemical classes of analytes (esters, fatty acids, alcohols) (Carrillo et al, 2006;Howard, Mike, & Riesen, 2005;Martí et al, 2003;Setkova, Risticevic, & Pawliszyn, 2007;Tat et al, 2005;Torrens et al, 2004). The effect of ionic strength -noaddition and addition of 30% of NaCl (saturated condition) -was considered in the experimental design.…”

Improvement of the Chemometric Variety Characterization of Wines by Improving the Detection Limit for Aroma Compounds

“…The values vary over a wide concentration range. The difference in terpene content between these varieties conforms with the terpene profile published in [11].…”

“…Various SPME fibers were tested for Headspace and Direct Immersion SPME. It has been found that the above mentioned compounds are best extracted using an 85 lm polyacrylate film [11][12][13].…”

Optimization of solid‐phase microextraction methods for GC‐MS determination of terpenes in wine

“…All experiments were performed onto a PDMS 100 µm fiber owing to its demonstrated suitability for the terpene analysis. 24 The standard solution employed contained 1 µg ml −1 of each terpene studied.…”