Rice bran oil can be extracted using several methods. Here are a few:
Solvent Extraction: This is the most popular conventional extraction method for rice bran oil production. Hexane is the most used solvent worldwide. However, this method suffers from some drawbacks linked to the toxicity of hexane for humans and the environment.
Mechanical Pressing (Cold Pressing): This method is widely used for functional rice bran oil as a dietary supplement. The bran is fully stabilized and sent to an extraction region where oil is removed, yielding two products, a high-quality crude rice bran oil, and defatted rice bran.
Puffing + Solvent Extraction Method: This modern method is used when dealing with low oil content oil seeds like rice bran which contains 16%-20% oil. The puffing process helps to increase the efficiency of the extraction.
It’s important to note that each method has its own advantages and disadvantages, and the choice of method depends on various factors such as the intended use of the oil, cost considerations, and environmental impact.
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