| abstract |
A process for refining glyceride oils comprising the steps of: (i) contacting the glyceride oil with a liquid comprising a basic quaternary ammonium salt to form a treated glyceride oil, wherein the quaternary ammonium salt comprises a basic anion that it is selected from hydroxide, alkoxide, alkyl carbonate, bicarbonate, carbonate, serinate, prolinate, histidinate, threonate, valinate, asparaginate, taurinate and lysinate; and a quaternary ammonium cation, (ii) separating the treated glyceride oil from a salt comprising the quaternary ammonium cation, and (iii) subjecting the treated glyceride oil after the separation step to at least one additional refining step; and the contact of a glyceride oil with the basic quaternary ammonium salt to prevent or reduce the formation of fatty acid esters with chloropropanols and / or glycidol when heating the glyceride oil. |