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Type: Artigo
Title: A new method for the extraction of volatile lipid oxidation products from shrimp by HS-SPME-GC-MS and an evaluation of the effect of salting and drying
Author: Souza, Hugo A. L.
Bragagnolo, Neura
Abstract: A new method based on headspace–solid-phase microextraction (HS–SPME) and gas chromatography–mass spectrometry (GC–MS) was developed, aimed at evaluating the formation of volatile lipid oxidation products (VLOPs) in shrimp during the salting and drying process. Of the four fibers evaluated, the fiber coated with divinylbenzene/carboxen/polydimethylsiloxane (DVB/CAR/PDMS) was the most adequate for the quantification of the VLOPs. The best analytical conditions were obtained by homogenization in an ultraturrax followed by extraction at 40 °C for 30 min. The optimized method allowed for the rapid and simple extraction of the VLOPs, with low detection (≤0.15 ng g–1) and quantification (≤0.50 ng g–1) limits and satisfactory precision (≤12.67%) and extraction efficiency (≥94.28%). The salting and drying negatively affected shrimp quality, reducing the fatty acid content and increasing the VLOPs, especially hexanal.
Subject: Compostos voláteis
Ácido eicosapentaenóico
Ácido docosahexaenoico
Country: Estados Unidos
Editor: American Chemical Society
Rights: Fechado
Identifier DOI: 10.1021/jf404270f
Date Issue: 2013
Appears in Collections:FEA - Artigos e Outros Documentos

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