| Method of test and survey of caprolactam migration into foods packaged in nylon-6. | |
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MedLine Citation:
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PMID: 15799563 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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An analytical method for the determination of the nylon-6 monomer caprolactam in foods is described. The foodstuff was extracted with ethanol: water (1:2) containing capryllactam as internal standard and the extract was defatted using hexane. The extract was analysed by liquid chromatography coupled with mass spectrometry. The test method was calibrated down to 0.7 mg kg(-1). The repeatability of the method was good, with a relative standard deviation of 9% at the 15 mg kg(-1) level. The method was demonstrated to be accurate in an independent external check sample exercise. The new method was applied to the analysis of 50 retail foodstuffs packaged in nylon-6. Caprolactam was detected and confirmed in nine of the 50 food samples, in the range 2.8-13 mg kg(-1). The presence of caprolactam was indicated in a further 15 samples, in the range 0.8-11 mg kg(-1), but these samples did not meet all of the five confirmation criteria applied. All migration levels (both confirmed and unconfirmed) were below the European specific migration limit for caprolactam, which is 15 mg kg(-1). The average migration for all 50 samples, setting non-detectables at half the limit of detection, was 2.6 mg kg(-1) with a standard deviation of 3.1 mg kg(-1) (n = 50). All samples found to contain detectable levels of caprolactam migration were for applications involving heating the food in the packaging. They were packs of, for example, sausage meat for which the food would have been heat processed in the nylon casing, or they were nylon pouches for heating foods by boiling, microwaving or roasting. |
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Authors:
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E L Bradley; D R Speck; W A Read; L Castle |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Food additives and contaminants Volume: 21 ISSN: 0265-203X ISO Abbreviation: Food Addit Contam Publication Date: 2004 Dec |
Date Detail:
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Created Date: 2005-03-31 Completed Date: 2005-06-21 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8500474 Medline TA: Food Addit Contam Country: England |
Other Details:
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Languages: eng Pagination: 1179-85 Citation Subset: IM |
Affiliation:
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Central Science Laboratory, Department for Environment, Food and Rural Affairs, Sand Hutton, York YO41 1LZ, UK. e.bradley@csl.gov.uk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Caprolactam
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analogs & derivatives*,
analysis*,
chemistry* Chromatography, Liquid / methods Diffusion Food Analysis / methods Food Contamination / analysis* Food Packaging* Humans Mass Spectrometry / methods Polymers / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Polymers; 105-60-2/Caprolactam; 25038-54-4/nylon 6 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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