Original Paper

Journal of the American Oil Chemists' Society

, Volume 88, Issue 1, pp 1-14

Open Access This content is freely available online to anyone, anywhere at any time.

Direct Determination of MCPD Fatty Acid Esters and Glycidyl Fatty Acid Esters in Vegetable Oils by LC–TOFMS

  • Troy D. HainesAffiliated withResearch Division, Archer Daniels Midland Company, James R. Randall Research Center
  • , Kevin J. AdlafAffiliated withResearch Division, Archer Daniels Midland Company, James R. Randall Research Center
  • , Robert M. PierceallAffiliated withResearch Division, Archer Daniels Midland Company, James R. Randall Research Center
  • , Inmok LeeAffiliated withResearch Division, Archer Daniels Midland Company, James R. Randall Research Center
  • , Padmesh VenkitasubramanianAffiliated withResearch Division, Archer Daniels Midland Company, James R. Randall Research Center
  • , Mark W. CollisonAffiliated withResearch Division, Archer Daniels Midland Company, James R. Randall Research Center Email author 

Abstract

Analysis of MCPD esters and glycidyl esters in vegetable oils using the indirect method proposed by the DGF gave inconsistent results when salting out conditions were varied. Subsequent investigation showed that the method was destroying and reforming MCPD during the analysis. An LC time of flight MS method was developed for direct analysis of both MCPD esters and glycidyl esters in vegetable oils. The results of the LC–TOFMS method were compared with the DGF method. The DGF method consistently gave results that were greater than the LC–TOFMS method. The levels of MCPD esters and glycidyl esters found in a variety of vegetable oils are reported. MCPD monoesters were not found in any oil samples. MCPD diesters were found only in samples containing palm oil, and were not present in all palm oil samples. Glycidyl esters were found in a wide variety of oils. Some processing conditions that influence the concentration of MCPD esters and glycidyl esters are discussed.

Keywords

Monochloropropanediol MCPD Glycidol Glycidyl esters LC–TOFMS Vegetable oil