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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, Marcio P
Ferreira, Ernesto C
Hantao, Leandro W
Bogusz, Stanislau
Augusto, Fabio
Abstract: Combining qualitative data from the chromatographic structure of 2-D gas chromatography with flame ionization detection (GC×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×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×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×GC-FID and GC/MS. The results obtained using both techniques were combined to improve compound identifications.
Subject: Ananas
Gas Chromatography-mass Spectrometry
Plant Extracts
Solid Phase Microextraction
Volatile Organic Compounds
Rights: fechado
Identifier DOI: 10.1002/jssc.201000697
Date Issue: 2011
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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