Fatty Acid Esters of Chloropropanols and Glycidol in Foods

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Free MCPD analysis Free MCPD determined by derivatisation- GCMS GCMS Cl Cl O O O B O C3F7 C3F7 O O Cl OH OH HO Derivatise PBA B OH Derivatise HFBI 20
Indirect methods 2 Enzyme method: Lipase 24 hr, used less than chemical methods Acidic method: Slow reaction with methanolic sulphuric acid, glycidol esters degraded Alkali rapid method: NaOMe < 10 mins but MCPD → glycidol at varying levels depending on pH. Salt (NaCl) addition forms MCPD from glycidol Method 1 DGF standard method C-VI 17 (10). Determines the sum of MCPD from MCPD esters + glycidyl esters Method 2 DGF C-VI 18 (10) A. Determines MCPD from MCPD esters only, after removal of glycidyl esters Method 2 DGF C-VI 18 (10) B. Determines MCPD from MCPD esters but no Cl used and so MCPD not produced from glycidyl esters Alkali slow method: NaOMe at – 22° C 18 hr. Prevents MCPD → glycidol Use on bromide can allow determination of glycidyl esters 21
Page 1 and 2: Fatty acid esters of chloropropanol
Page 3 and 4: ILSI Europe activity • MCPD fatty
Page 5 and 6: monoesters CH 2 O CH CH 2 CH 2 CH C
Page 7 and 8: Occurrence - MCPD esters in oils 2-
Page 9 and 10: Occurrence- glycidyl esters in oils
Page 11 and 12: Exposure The main contributor to hu
Page 13 and 14: Bioavailability Feeding rats with f
Page 15 and 16: Analysis To provide estimates of co
Page 17 and 18: Direct analytical methods 1 Dilute
Page 19: Indirect methods 1 1. All esters co
Page 23 and 24: Ring Tests JRC: Proficiency test on
Page 25 and 26: Future needs Harmonization of curre
Page 27 and 28: Publications 27
Page 29: Thank you Colin Crews Current proje

Fatty Acid Esters of Chloropropanols and Glycidol in Foods

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