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Type: Artigo de periódico
Title: New Method for the Extraction of Volatile Lipid Oxidation Products from Shrimp by Headspace-Solid-Phase Microextraction Gas Chromatography-Mass Spectrometry and Evaluation of the Effect of Salting and Drying
Author: Souza, HAL
Bragagnolo, N
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 degrees 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 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: volatile compounds
pacific white shrimp
Litopenaeus vannamei
method validation
arachidonic acid
eicosapentaenoic acid
docosahexaenoic acid
Country: EUA
Editor: Amer Chemical Soc
Citation: Journal Of Agricultural And Food Chemistry. Amer Chemical Soc, v. 62, n. 3, n. 590, n. 599, 2014.
Rights: fechado
Identifier DOI: 10.1021/jf404270f
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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