Document Detail


Analysis of acrylamide, a carcinogen formed in heated foodstuffs.
MedLine Citation:
PMID:  12166997     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Reaction products (adducts) of acrylamide with N termini of hemoglobin (Hb) are regularly observed in persons without known exposure. The average Hb adduct level measured in Swedish adults is preliminarily estimated to correspond to a daily intake approaching 100 microg of acrylamide. Because this uptake rate could be associated with a considerable cancer risk, it was considered important to identify its origin. It was hypothesized that acrylamide was formed at elevated temperatures in cooking, which was indicated in earlier studies of rats fed fried animal feed. This paper reports the analysis of acrylamide formed during heating of different human foodstuffs. Acrylamide levels in foodstuffs were analyzed by an improved gas chromatographic-mass spectrometric (GC-MS) method after bromination of acrylamide and by a new method for measurement of the underivatized acrylamide by liquid chromatography-mass spectrometry (LC-MS), using the MS/MS mode. For both methods the reproducibility, given as coefficient of variation, was approximately 5%, and the recovery close to 100%. For the GC-MS method the achieved detection level of acrylamide was 5 microg/kg and for the LC-MS/MS method, 10 microg/kg. The analytic values obtained with the LC-MS/MS method were 0.99 (0.95-1.04; 95% confidence interval) of the GC-MS values. The LC-MS/MS method is simpler and preferable for most routine analyses. Taken together, the various analytic data should be considered as proof of the identity of acrylamide. Studies with laboratory-heated foods revealed a temperature dependence of acrylamide formation. Moderate levels of acrylamide (5-50 microg/kg) were measured in heated protein-rich foods and higher contents (150-4000 microg/kg) in carbohydrate-rich foods, such as potato, beetroot, and also certain heated commercial potato products and crispbread. Acrylamide could not be detected in unheated control or boiled foods (<5 microg/kg). Consumption habits indicate that the acrylamide levels in the studied heated foods could lead to a daily intake of a few tens of micrograms.
Authors:
Eden Tareke; Per Rydberg; Patrik Karlsson; Sune Eriksson; Margareta Törnqvist
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  50     ISSN:  0021-8561     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2002 Aug 
Date Detail:
Created Date:  2002-08-08     Completed Date:  2002-09-18     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  4998-5006     Citation Subset:  IM    
Affiliation:
Department of Environmental Chemistry, Stockholm University, S-106 91 Stockholm, Sweden.
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MeSH Terms
Descriptor/Qualifier:
Acrylamide / administration & dosage,  analysis*,  blood
Carcinogens / administration & dosage,  analysis*,  metabolism
Chromatography, Liquid
Diet
Food Analysis*
Gas Chromatography-Mass Spectrometry
Hemoglobins / metabolism
Hot Temperature*
Mass Spectrometry
Risk Factors
Chemical
Reg. No./Substance:
0/Carcinogens; 0/Hemoglobins; 79-06-1/Acrylamide

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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