| 摘要 |
A process for removing metal from a metal-containing glyceride oil comprising contacting the glyceride oil with a basic ionic liquid comprising an organic quaternary ammonium cation, and separating the treated glyceride oil from an ionic compound comprising the organic quaternary ammonium cation. The basic anion of the basic ionic liquid is selected from hydroxide, alkoxide, alkylcarbonate, hydrogen carbonate, carbonate, serinate, prolinate, histidinate, threoninate, valinate, asparaginate, taurinate and lysinate. Preferably the glyceride oil does not comprise palm oil and the basic ionic liquid is selected from choline bicarbonate or choline hydroxide, and the process further comprises subjecting the glyceride oil to at least one refining step before and/or after contacting the glyceride oil with the basic ionic liquid. Also claimed is the use of the basic ionic liquid for reducing the total metal concentration of a metal-containing glyceride oil and a composition comprising glyceride oil and a basic ionic liquid wherein the total concentration of metal in the composition is 10-10,000 ppm. |
