Document Detail


Perfluorochemicals: potential sources of and migration from food packaging.
MedLine Citation:
PMID:  16227186     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Perfluorochemicals are widely used in the manufacturing and processing of a vast array of consumer goods, including electrical wiring, clothing, household and automotive products. Furthermore, relatively small quantities of perfluorochemicals are also used in the manufacturing of food-contact substances that represent potential sources of oral exposure to these chemicals. The most recognizable products to consumers are the uses of perfluorochemicals in non-stick coatings (polytetrafluoroethylene (PTFE)) for cookware and also their use in paper coatings for oil and moisture resistance. Recent epidemiology studies have demonstrated the presence of two particular perfluorochemicals, perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) in human serum at very low part per billion levels. These perfluorochemicals are biopersistent and are the subject of numerous studies investigating the many possible sources of human exposure. Among the various uses of these two chemicals, PFOS is a residual impurity in some paper coatings used for food contact and PFOA is a processing aid in the manufacture of PTFE used for many purposes including non-stick cookware. Little information is available on the types of perfluorochemicals that have the potential to migrate from perfluoro coatings into food. One obstacle to studying migration is the difficulty in measuring perfluorochemicals by routine conventional analytical techniques such as GC/MS or LC-UV. Many perfluorochemicals used in food-contact substances are not detectable by these conventional methods. As liquid chromatography-mass spectrometry (LC/MS) develops into a routine analytical technique, potential migrants from perfluoro coatings can be more easily characterized. In this paper, data will be presented on the types of perfluoro chemicals that are used in food packaging and cookware. Additionally, research will be presented on the migration or potential for migration of these chemicals into foods or food simulating liquids. Results from migration tests show mg kg(-1) amounts of perfluoro paper additives/coatings transfer to food oil. Analysis of PTFE cookware shows residual amounts of PFOA in the low microg kg(-1) range. PFOA is present in microwave popcorn bag paper at amounts as high as 300 microg kg(-1).
Authors:
T H Begley; K White; P Honigfort; M L Twaroski; R Neches; R A Walker
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Food additives and contaminants     Volume:  22     ISSN:  0265-203X     ISO Abbreviation:  Food Addit Contam     Publication Date:  2005 Oct 
Date Detail:
Created Date:  2005-10-17     Completed Date:  2006-02-09     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8500474     Medline TA:  Food Addit Contam     Country:  England    
Other Details:
Languages:  eng     Pagination:  1023-31     Citation Subset:  IM    
Affiliation:
US Food and Drug Administration, Center for Food Safety and Applied Nutrition, College Park, MD 20740, USA. tbegley@cfsan.fda.gov
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MeSH Terms
Descriptor/Qualifier:
Chromatography, Liquid / methods
Cooking and Eating Utensils
Environmental Exposure / adverse effects
Equipment Design
Fluorocarbon Polymers / chemistry*
Fluorocarbons / analysis
Food Contamination*
Food Packaging*
Household Articles
Humans
Microwaves
Octanoic Acids / analysis
Paper
Polytetrafluoroethylene / analysis
Spectrometry, Mass, Electrospray Ionization / methods
Chemical
Reg. No./Substance:
0/Fluorocarbon Polymers; 0/Fluorocarbons; 0/Octanoic Acids; 335-67-1/perfluorooctanoic acid; 9002-84-0/Polytetrafluoroethylene

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