Bench‐scale treatments of colour‐fixed cottonseed oil

Abstract

Bench-scale refining of crude colour-fixed cottonseed oil was carried out using equipment and conditions similar 10 those ;it a local factory. Ethanolamine at 2 ~ 3"" level resulted in 55---62", reduction in the oil colour, and 24-26 o?; reduction in the refining loss over the factory treated oil. Sodium silicate at 0.14-0.47',, level resulted in about 50% reduction in oil colour and 24-440., reduction in the refining loss. A two-step treatment, first with caustic soda lye then with either additives. and miscella relining using ethanolamine as an additive, resulted in superior oil colour, yet the refining losses were high.