Optimisation of stir bar sorptive extraction and liquid desorption combined with large volume injection-gas chromatography-quadrupole mass spectrometry for the determination of volatile compounds in wines

Analytica Chimica Acta
Elisabete CoelhoSílvia M Rocha

Abstract

Stir bar sorptive extraction and liquid desorption followed by large volume injection coupled to gas chromatography-quadrupole mass spectrometry (SBSE-LD/LVI-GC-qMS) had been applied for the determination of volatiles in wines. The methodology was optimised in terms of extraction time and influence of ethanol in the matrix; LD conditions, and instrumental settings. The optimisation was carried out by using 10 standards representative of the main chemical families of wine, i.e. guaiazulene, E,E-farnesol, beta-ionone, geranylacetone, ethyl decanoate, beta-citronellol, 2-phenylethanol, linalool, hexyl acetate and hexanol. The methodology shows good linearity over the concentration range tested, with correlation coefficients higher than 0.9821, a good reproducibility was attained (8.9-17.8%), and low detection limits were achieved for nine volatile compounds (0.05-9.09 microg L(-1)), with the exception of 2-phenylethanol due to low recovery by SBSE. The analytical ability of the SBSE-LD/LVI-GC-qMS methodology was tested in real matrices, such as sparkling and table wines using analytical curves prepared by using the 10 standards where each one was applied to quantify the structurally related compounds. This methodology allowed, in ...Continue Reading

Citations

May 17, 2011·Analytical and Bioanalytical Chemistry·Carolina Muñoz-GonzálezM Ángeles Pozo-Bayón
Mar 8, 2011·Journal of Agricultural and Food Chemistry·Elisabete CoelhoManuel A Coimbra
Apr 9, 2011·International Journal of Food Microbiology·Amparo GameroVicente Ferreira
Oct 20, 2012·Journal of the Science of Food and Agriculture·María J Cejudo-BastanteCarmelo García-Barroso
Jan 17, 2017·Analytical and Bioanalytical Chemistry·Carlos AlmeidaJosé Manuel F Nogueira
Jul 14, 2012·Analytica Chimica Acta·Henryk H JeleńMariusz Dziadas
Oct 23, 2008·Journal of Agricultural and Food Chemistry·Berhane T Weldegergis, Andrew M Crouch
Mar 14, 2009·Journal of Agricultural and Food Chemistry·Joan Gallardo-ChacónSusana Buxaderas

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