Soya bean Oil

Abstract

Soya bean oil is obtained from the seeds either by pressing or solvent extraction method. It is the highest volume vegetable oil produced. The oil content in the seed is about 20 % on dry basis. The crude Soya bean oil of good quality has a light amber color, which upon alkali refining is reduced to the light yellow color of most vegetable seed oils. Soya bean oil produced from green or immature beans may contain sufficient chlorophyll to have a greenish cast but this is not usually very evident until after the yellow – red pigments of the oil have been bleached in hydrogenation. Oil produced from badly damaged beans may have a dark brown color, which will be very difficult to remove by refining.