Edible oil-treatment process -protecting against effects of heat - and air

摘要

Treatment of crude edible oils in which the overheating during drawing-off is limited and the lowest possible temps. are used during refining. The process involves immediately liquifying at the point near the drawing-off spot the layer of fat at the top of the fatty mass and operating in the cold the first phase of the refining process, i.e. the conditioning of impurities at the same time as the pulverisation of the caustic soda or the first part of the colouration is carried out so as to protect the crude oils against the insidious action of air and heat. Very selective hydrogenation is then carried out without side reactions which occur because of traces of impurities in the oils.