Dry refining of sesame oil with alkali-enriched sodium metasilicate

The paper describes an easy method of refining sesame oil with alkali-enriched dry sodium metasilicate (SMS). This method offered significant reduction in free fatty acids (FFA) of the oil. Extent of FFA reduction depended on the degree of the alkalinity of SMS-NaOH mixture. Color of the oil was not markedly improved by the process.