Abstract: The present invention relates to a process for refining glyceride oil comprising a neutralization treatment in which alkali is mixed into crude or water degummed glyceride oil and a separation treatment in which the soapstock formed is separated from the glyceride oil by subjecting the oil to two centrifugal separators in series, in which at least 1 wt. % of the oil passes through both separators twice.

Abstract: The present invention relates to a process for the regeneration of spent bleaching earth, comprising an oxidative heat treatment in which the amount of oxygen supplied exceeds the stoichiometrical requirement of complete oxidation of all organics present in the spent bleaching earth, wherein the spent bleaching earth and the oxygen are blown through a stationary fluidized bed of inert granulate material. The stationary fluidized bed should be as high as to limit the temperature in the freeboard to less than 1000.degree. C. As a matter of fact, it has been found that, if the fluidized bed is not high enough, the oxygen required to burn off the organics content of the spent bleaching earth would blow out the powdered bleaching earth from the bed at the stage of incomplete oxidation of the organics present on the earth, resulting in an uncontrolled temperature rise in the freeboard and local overheating of the bleaching earth.

Abstract: Process for fractionating phosphatide mixtures into two or more fractions which are enriched in one or more of phosphatidyl choline (PC), phosphatidyl ethanolamine (PE), phosphatidyl inositol (PI) and phosphatidic acid (PA) by carrying out extraction steps using alcoholic solvent in which the solubilities of PC, PE and PA are controlled by suitably adjusting the acidity of the solvent, the pH being adjusted to above 8 for solubilizing PC and PE and to below 5 for solubilizing PA. PI is substantially insoluble in the solvent used in the process and thus is mainly recovered in the extraction residue. Further parameters influencing the solubility of the components of the phosphatide mixtures to be fractionated are water content of the alcoholic solvent, temperature and choice of bases and acids for adjusting the pH. For further separating fractions rich in PC and PE di- or trivalent metal salt solutions are used.

Abstract: A process for producing at the same time degummed vegetable oils and gums of high phosphatidic acid content is described. The starting materials for this process are vegetable oils which have been conventionally water degummed and accordingly still contain too much non-hydratable phosphatides and iron for further processing by physical refining and providing a refined oil of good keepability. Therefore in a first stage of the disclosed process a non-toxic aqueous acid, e.g. phosphoric acid, is finely dispersed in the water degummed oil and sufficient contact time is allowed to complete the decomposition of the metal salts of phosphatidic acid. In a second stage a base is added to increase the pH above 2.5 without substantial formation of soap and in a third stage the aqueous phase containing the gums and the oil phase are separated.

Abstract: An edible oil mixture containing a liquid phase and crystalline solids is at least partially separated by centrifugal separation. In the process the centrifugal force is sufficiently high to cause separation of liquid from solid so that the liquid is removed from solid and the space occupied by the liquid is replaced by the atmosphere. The average period of time during which the solid components are subjected to the centrifugal force is less than 2 minutes and the solids cake formed is continuously advanced mechanically or centrifugally or by a combination of both over a surface in a direction which is at an angle relative to the direction of the centrifugal force.

Abstract: Process for the directed interesterification of a triglyceride oil or oil mixture comprising the addition of a catalyst to the oil or oil mixture at a temperature below 50.degree. C., the activation of the catalyst below this temperature and the use of successive high and low temperatures in several cycles, the activation of the catalyst being combined with a very fast cooling of short or relatively short duration.

Abstract: An edible oil composition suitable for frying uses is described. The composition comprises(a) a liquid oil,(b) an emulsifier,(c) a browning substance, and(d) an effective amount of a stabilizing material.The stabilizing material forms 1% or less of the total weight of the composition and is selected from fully or partly hardened fats or oils with a slip melting point of at least 45.degree. C. The composition has good storage stability, avoids unpleasant spattering and provides excellent tasting and stable sauces after frying and mixing with water.

Abstract: Process for the directed interesterification of a triglyceride oil or oil mixture comprising the addition of a catalyst to the oil or oil mixture at a temperature below 50.degree. C., the activation of the catalyst below this temperature and the use of successive high and low temperatures in several cycles, the activation of the catalyst being combined with a very fast cooling of short or relatively short duration.