| Identification of non-visible set-off in food contact materials by ambient ionization-accurate mass spectrometry (AMI-AMS). | |
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MedLine Citation:
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PMID: 22250944 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Set-off is the unintentional transfer of substances used in printing from the external printed surface of food packaging to the inner, food-contact surface. Ambient Ionization Accurate Mass Spectrometry (AMI-AMS) detected and identified compounds from print set-off not visible to the human eye. AMI mass spectra from inner and outer surfaces of printed and non-printed food packaging were compared to detect and identify non-visible set-off components. A protocol to identify unknowns was developed using a custom open sourced database of printing inks and food packaging compounds. The protocol matched print related food-contact surface ions with molecular formula of common ions, isotopes, and fragments of compounds from the database. AMI-AMS was able to detect print set-off and identify 7 different compounds. Set-off on the packaging samples was confirmed using gas chromatographic mass spectrometric (GC-MS) analysis of single-sided solvent extracts. N-ethyl-2(and 4)-methyl-benzenesulfonamide, 2,4-diphenyl-4-methyl-1(and 2)-pentene and 2,4,7,9-tetramethyl-5-decyne-4,7-diol were present on the food contact layer at concentrations from 0.21 to 2.7 ± 1.6 µg·dm-2, corresponding to nearly mg·Kg-1 concentrations in the packaged food. Other minor set-off compounds were detected only by AMI-AMS, a fast, simple, and thorough technique to detect and identify set-off in food packaging. |
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Authors:
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Karim Bentayeb; Luke K Ackerman; Timothy H Begley |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-17 |
Journal Detail:
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Title: Journal of agricultural and food chemistry Volume: - ISSN: 1520-5118 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-18 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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