Document Detail

Detection of adulteration of poppy seed oil with sunflower oil based on volatiles and triacylglycerol composition.
MedLine Citation:
PMID:  16910734     Owner:  NLM     Status:  MEDLINE    
Although poppy seed oil is an expensive article of trade, no literature about identification methods for adulteration with cheaper vegetable oils, like sunflower oil, has been published. This kind of adulteration is a challenge for routine analytical methods, such as the determination of fatty acid composition, because of almost similar fatty acid ratios. The detection of adulteration of poppy seed oils with sunflower oils at different levels (5-40%, w/w) by using SPME-GC-MS and MALDI-ToF-MS is the subject of our investigation. With the mentioned SPME-GC-MS method, it was possible to detect an admixture of sunflower oils in all relevant (5-40%) amounts by using alpha-pinene as a marker compound. Admixture of sunflower oil with high levels of triolein (high-oleic acid type) could be undoubtedly detected by MALDI-MS down to the 5-10% level. In contrast, adulteration of pure poppy seed oil by "standard" sunflower oils remained indistinguishable using this MALDI-MS.
Sabine Krist; Gerald Stuebiger; Stefanie Bail; Heidrun Unterweger
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  54     ISSN:  0021-8561     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2006 Aug 
Date Detail:
Created Date:  2006-08-16     Completed Date:  2006-10-20     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  6385-9     Citation Subset:  IM    
Department of Clinical Pharmacy and Diagnostics, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria.
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MeSH Terms
Food Contamination / analysis*
Gas Chromatography-Mass Spectrometry
Monoterpenes / analysis
Papaver / chemistry*
Plant Oils / chemistry*
Seeds / chemistry*
Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
Triglycerides / analysis*
Reg. No./Substance:
0/Monoterpenes; 0/Plant Oils; 0/Triglycerides; 80-56-8/alpha-pinene; 8001-21-6/sunflower seed oil

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