A sulphuric acid-impregnated silica gel clean-up procedure for the determination of n-alkanes migration from paraffin based paper packaging into cheddar cheese

doi:10.1016/j.foodchem.2012.02.076

A sulphuric acid-impregnated silica gel clean-up procedure for the determination of n-alkanes migration from paraffin based paper packaging into cheddar cheese

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A sulphuric acid-impregnated silica gel clean-up procedure for the determination of n-alkanes migration from paraffin based paper packaging into cheddar cheese

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Bibliographic description

punktacja MEiN [2012 A]: 45

title:	A sulphuric acid-impregnated silica gel clean-up procedure for the determination of n-alkanes migration from paraffin based paper packaging into cheddar cheese
author:	Pezo Davinson, Wrona Magdalena, Rodriguez-Lafuente Angel, Nerin Cristina
journal title:	Food Chemistry
volume:	134
issue:	1
date of publication :	2012
pages:	405-411
ISSN:	0308-8146
eISSN:	1873-7072
DOI:	10.1016/j.foodchem.2012.02.076
notes:	Magdalena Wrona - Zakład Chemii Analitycznej
language:	English
journal language:	English
abstract in English:	A procedure for the determination of n -alkanes migration from paraffin paper packaging into fatty foods has been fully developed. First, the lipid fraction of the cheddar cheese is extracted with a mixture of diethyl ether/ n -hexane (1:1). Then, a sulphuric acid-impregnated silica gel (SAISG) clean-up procedure is performed and the final extract is analysed by gas-chromatography (GC) with flame ionisation detector (FID). The procedure has been validated in terms of limits of detection and quantification, linear range, recovery, precision and robustness. The method has been used in the evaluation of the n -alkane migra- tion from paraffin coated paper into cheddar cheese. Results after 10 days of migration test showed the typical n -alkanes (C 19 –C 37 ) profile of migration with a maximum (21.1 ± 10.8 l gg 1 )in n -pentacosane (C 25 ).
keywords in English:	Food analysis, Specific migration analysis, n -Alkanes, Cheese, Sample treatment, Sulphuric acid-impregnated silica gel, Fat matter removal, Paraffin
departmental parameterization:	45
affiliation:	Wydział Chemii : Zakład Chemii Analitycznej
type:	journal article
subtype:	academic paper

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