Authors: Catarina Petisca Trinidad PérezPalacios Olívia Pinho Isabel M P L V O Ferreira
Publish Date: 2013/04/02
Volume: 7, Issue: 1, Pages: 81-88
Abstract
A headspace solidphase microextraction gas chromatography GCmass spectrometry MS method previously optimized for analyses of volatiles in coffee was used for simultaneous quantification of major furanic compounds 2furfural furfuryl alcohol 5methylfurfural and furfuryl acetate and furan in espresso coffee prepared from hermetically closed capsules High sensitivity was achieved with low limits of detection and limits of quantification Good linearity was observed with correlation coefficients higher than 0999 Recovery percentages were 102 for furan 997 for 2furfural 980 for furfuryl alcohol 998 for 5methylfurfural and 999 for furfuryl acetate The method was applied to the analyses of espresso coffee from hermetically closed capsules A total of 69 volatiles for Blend Roast and Blend Dark Roast samples 64 volatiles for Arabica Dark Roast samples 91 volatiles for Arabica Light Roast samples 96 volatiles for Caramel coffee 90 volatiles for Vanilla coffee and 92 volatiles for Almond coffee In general furanic compounds were the major chemical family ketones aldehydes acids pyrazines pyrroles alcohols pyridines aromatic compounds hydrocarbons and ethers were also detected Total content of these furanic compounds varied from 105 to 199 μg ml−1 The optimized method proved to be a reliable methodology for quantification of major furanic compounds and furan present in different types of espresso coffee Although relative percentage of peak area is a good method for discriminate volatiles in different coffee brews with closer composition the quantification of furanic compounds is more accurate for understand the real intake amountCatarina Petisca wishes to thank FCT the grant SFRH/bd/48745/2008 Trinidad Pérez Palacios acknowledges funds provided by the Junta de ExtremaduraConsejeria de Economia Comercio e Innovación and the Fondo Social Europeo for her postdoctoral grant This work has been supported by Projects PTDC/AGRALI/101583/2008 and PEstC/EQB/LA0006/2011Catarina Petisca declares that she has no conflict of interest Trinidad PérezPalacios declares that she has no conflict of interest Olívia Pinho declares that she has no conflict of interest Isabel MPLVO Ferreira declares that she has no conflict of interest This article does not contain any studies with human or animal subjects
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