Improved sample extraction and clean-up for the GC-MS determination of BADGE and BFDGE in vegetable oil

C Brede, I Skjevrak, H Herikstad… - Food Additives & …, 2002 - Taylor & Francis
C Brede, I Skjevrak, H Herikstad, E Ånensen, R Austvoll, T Hemmingsen
Food Additives & Contaminants, 2002Taylor & Francis
A straightforward method was established for the determination of migration contaminants in
olive oil with a special focus on the two can-coating migration compounds bisphenol A
diglycidyl ether (BADGE) and bisphenol F diglycidyl ether (BFDGE). The preferred sample
preparation was a single liquid-liquid extraction of compounds from the oil into 20%(v/v)
methanol in acetonitrile, followed by clean-up with solid-phase extraction on aminopropyl
bonded to silica. This purification procedure selectively removed all free fatty acids from the …
A straightforward method was established for the determination of migration contaminants in olive oil with a special focus on the two can-coating migration compounds bisphenol A diglycidyl ether (BADGE) and bisphenol F diglycidyl ether (BFDGE). The preferred sample preparation was a single liquid-liquid extraction of compounds from the oil into 20% (v/v) methanol in acetonitrile, followed by clean-up with solid-phase extraction on aminopropyl bonded to silica. This purification procedure selectively removed all free fatty acids from the extracts without removing phenolic compounds of interest. The solid-phase extraction columns were used many times by implementing a procedure of washing out the strongly retained fatty acids with 2% acetic acid in methanol. Gas chromatography coupled with full scan (m/z 33-700) electron ionization mass spectrometry was used for the determination of several model compounds in olive oil samples. BADGE and BFDGE could be determined in the 0.05-2 mg kg−1 range in oil samples with a relative SD of <6% (six replicates). The method was used in an enforcement campaign for the Norwegian Food Control Authority to analyse vegetable oil samples from canned fish-in-oil.
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