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J Sep Sci

Title:		Identification of volatiles from pineapple (Ananas comosus L.) pulp by comprehensive two-dimensional gas chromatography and gas chromatography/mass spectrometry
Author(s):		Pedroso MP; Ferreira EC; Hantao LW; Bogusz S; Augusto F;
Address:		"Institute of Chemistry, State University of Campinas (Unicamp) and Instituto Nacional de Ciencia e Tecnologia de Bioanalitica (INCTBio), Sao Paulo, Brazil. marciopedroso@dqi.ufla.br"
Journal Title:		J Sep Sci
Year:		2011
Volume:		20110603
Issue:		13
Page Number:		1547 - 1554
DOI:		10.1002/jssc.201000697
ISSN/ISBN:		1615-9314 (Electronic) 1615-9306 (Linking)
Abstract:		"Combining qualitative data from the chromatographic structure of 2-D gas chromatography with flame ionization detection (GCxGC-FID) and that from gas chromatography-mass spectrometry (GC/MS) should result in a more accurate assignment of the peak identities than the simple analysis by GC/MS, where coelution of analytes is unavoidable in highly complex samples (rendering spectra unsuitable for qualitative purposes) or for compounds in very low concentrations. Using data from GCxGC-FID combined with GC/MS can reveal coelutions that were not detected by mass spectra deconvolution software. In addition, some compounds can be identified according to the structure of the GCxGC-FID chromatogram. In this article, the volatile fractions of fresh and dehydrated pineapple pulp were evaluated. The extraction of the volatiles was performed by dynamic headspace extraction coupled to solid-phase microextraction (DHS-SPME), a technique appropriate for slurries or solid matrices. Extracted analytes were then analyzed by GCxGC-FID and GC/MS. The results obtained using both techniques were combined to improve compound identifications"
Keywords:		Ananas/*chemistry Gas Chromatography-Mass Spectrometry/*methods Plant Extracts/*analysis/isolation & purification Solid Phase Microextraction Volatile Organic Compounds/*analysis/isolation & purification;
Notes:		"MedlinePedroso, Marcio P Ferreira, Ernesto C Hantao, Leandro W Bogusz, Stanislau Jr Augusto, Fabio eng Evaluation Study Research Support, Non-U.S. Gov't Germany 2011/06/07 J Sep Sci. 2011 Jul; 34(13):1547-54. doi: 10.1002/jssc.201000697. Epub 2011 Jun 3"