Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/71789
Type: Artigo de periódico
Title: Solid Phase Microextraction - Gas Chromatography for the Evaluation of Secondary Lipid Oxidation Products in Chicken Patties during Long-Term Storage
Author: Mariutti, LRB
Nogueira, GC
Bragagnolo, N
Abstract: The formation of hexanal, pentanal and malonaldehyde from raw and grilled chicken patties during storage at -18 degrees C for 90 days was evaluated by SPME using a DVB/CAR/PDMS fiber. The extraction conditions were optimized to provide reproducible results and avoided fiber saturation even for more oxidised samples. The performance of different DVB/CAR/PDMS fibers was verified during the entire storage period and seven separate fibers were used to assay the extent of lipid oxidation. The relative standard deviation (RSD) was calculated for 60 duplicate analysis and no differences were observed (p > 0.05) among the fibers RSD despite the number of times they were used. The relationship between the different parameters were also established and compared to the results obtained by the traditional TBARS test. Raw patties showed significant (p < 0.05) Pearson's correlations between all parameters, varying from 0.93 to 0.99. However, grilled patties presented a correlation of 0.98 only between hexanal and pentanal.
Subject: long term storage
lipid oxidation
TBARS
SPME
chicken meat
Country: Brasil
Editor: Soc Brasileira Quimica
Rights: aberto
Date Issue: 2009
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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