Rice bran oil refining process

Abstract

The rice bran oil refining process includes adding ethanolamine in 0.5-3 % into raw rice bran oil stirring at room temperature to react for 0.5-1 hr, and centrifugally separating to obtain coarse rice bran oil; washing with soft water for at least one time; and final standing to separate out the supernatant as the refined rice bran oil, which is clear, transparent, reddish yellow and has acid value below 6 and yield not lower than 55 %. The said process of refining rice bran oil can degum, deacidify, improve color and lower acid value, and is simple.

Description

1. Technical field [0001] The invention relates to a refining method of edible vegetable oil, in particular to a refining method of rice bran oil. 2. Background technology [0002] Rice bran oil is a deep-processed product of rice bran. Its fatty acid composition is relatively reasonable. It contains 38% linoleic acid and 42% oleic acid. It meets the best ratio of oleic acid and linoleic acid recommended by the International Health Organization. It is an internationally recognized nutritional oil. . In addition, rice bran oil is also rich in vitamin E, oryzanol, sitosterol and other phytosterols, which has high nutritional and health value. Eating rice bran oil has a good therapeutic effect on lowering human serum cholesterol, preventing arteriosclerosis and hypertension. The bran oil extracted from fresh rice bran contains bran wax, phospholipids, protein, pigment and more free fatty acids, etc. It needs to be further purified and refined to remove these impurities as edib...

AI Technical Summary

Problems solved by technology

The above two methods have their own advantages and disadvantages. Generally speaking, the loss in the whole processing process is not small, the yield is not high, and the economic benefits of the enterprise are not very good.