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Type: Artigo de periódico
Title: Identification of volatiles from pineapple (Ananas comosus L.) pulp by comprehensive two-dimensional gas chromatography and gas chromatography/mass spectrometry
Author: Pedroso, MP
Ferreira, EC
Hantao, LW
Bogusz, S
Augusto, F
Abstract: Combining qualitative data from the chromatographic structure of 2-D gas chromatography with flame ionization detection (GC x GC-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 GC x GC-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 GC x GC-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 GC x GC-FID and GC/MS. The results obtained using both techniques were combined to improve compound identifications.
Subject: Chromatographic structure
Comprehensive 2-D gas chromatography
Gas chromatography-mass spectrometry
Solid-phase microextraction
Country: EUA
Editor: Wiley-blackwell
Citation: Journal Of Separation Science. Wiley-blackwell, v. 34, n. 13, n. 1547, n. 1554, 2011.
Rights: fechado
Identifier DOI: 10.1002/jssc.201000697
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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