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J Chromatogr A

Title:		Multiple headspace-solid-phase microextraction as a powerful tool for the quantitative determination of volatile radiolysis products in a multilayer food packaging material sterilized with gamma-radiation
Author(s):		de Oliveira CP; Rodriguez-Lafuente A; Soares Nde F; Nerin C;
Address:		"Department of Rural and Animal Technology, Bahia's Southwest State University, Praca Primavera 40, 45700-000 Itapetinga, Bahia, Brazil. cristianepatricia@hotmail.com"
Journal Title:		J Chromatogr A
Year:		2012
Volume:		20120509
Issue:
Page Number:		61 - 68
DOI:		10.1016/j.chroma.2012.05.013
ISSN/ISBN:		1873-3778 (Electronic) 0021-9673 (Linking)
Abstract:		"A method consisting of multiple headspace solid-phase microextraction followed by gas chromatography-mass spectrometry analysis was developed and used to determine the main volatile radiolysis products formed by gamma-irradiation of flexible multilayer food packaging samples. The developed method allows the use of solid-phase microextraction in the quantification of compounds from plastic solid samples. A screening of volatiles in the gamma-irradiated and non-irradiated films was performed and 29 compounds were identified in the irradiated packaging, 17 of which were absent in the non-irradiated samples. The main volatile radiolysis products identified were: 1,3-di-tert-butylbenzene; 2,6-di-tert-butyl-1,4-benzoquinone; 4-tert-butyl-phenol and the off-odor compounds butanoic acid and valeric acid. These volatile radiolysis compounds were determined with the proposed method and the results are shown and discussed. Solid-liquid extraction and headspace solid-phase microextraction methods were also studied for comparative purposes. The automated solvent-free multiple HSPME technique here presented can be used to quantify the radiolysis compounds in irradiated plastic solid samples in a simple way with the advantages of being free from matrix influence and environmentally friendly"
Keywords:		Benzene Derivatives/analysis Benzoquinones/analysis Butylated Hydroxytoluene/analogs & derivatives/analysis Butyric Acid/analysis *Food Packaging *Gamma Rays Linear Models Pentanoic Acids/analysis Phenols/analysis Solid Phase Microextraction/*methods Ster;
Notes:		"Medlinede Oliveira, Cristiane Patricia Rodriguez-Lafuente, Angel Soares, Nilda de Fatima Ferreira Nerin, Cristina eng Research Support, Non-U.S. Gov't Netherlands 2012/05/23 J Chromatogr A. 2012 Jun 29; 1244:61-8. doi: 10.1016/j.chroma.2012.05.013. Epub 2012 May 9"