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The high annual rate of production of rice in our country usually resulted in accumulation of a large quantities of bran. This fact prompted us to evaluate different utilization of the rice bran.
For this purpose, crude rice bran oil extracted trom bran with commercial nhexane by automatic soxhlet extractor and desolventized by rotary vacuum evaporator. Then crude rice bran oil was dewaxed by chilling to 18 C followed by
centrifuging. The wax sludge obtained was 66% free fatty acids and 34% waxes, whereas the oil phase was 64.5% fatty acids and 35.5% glycerides. The dewaxed oil was evaluated as an antifoaming agent for aqueous media and compared to commercial oleic acid. Based on our results and findings, the dewaxed rice bran
oil has an antifoaming power equal or
greater than oleic acid.