To make rice bran oil from rice bran, you need to follow several steps, such as cleaning, conditioning, puffing, solvent extraction, refining and dewaxing. Here is a brief overview of the process:
1. Cleaning: This step is to remove the impurities in the rice bran, such as stones, dust, metal particles, etc. This can improve the oil yield and quality of the oil
2. Conditioning: This step is to adjust the moisture and temperature of the rice bran, which can make it easier to puff and extract
3. Puffing: This step is to use an rice bran oil extrusion machine to heat and press the rice bran, which can destroy the oil cells and increase the surface area for solvent extraction
4. Solvent extraction: This step is to use a solvent (usually hexane) to extract the oil from the puffed rice bran. The solvent is then evaporated and recycled, leaving behind crude rice bran oil and defatted rice bran meal
5. Refining: This step is to remove the unwanted substances in the crude rice bran oil, such as free fatty acids, gums, pigments, odors, etc. The refining process includes degumming, deacidification, decolorization and deodorization
6. Dewaxing: This step is to remove the wax content in the refined rice bran oil, which can improve the clarity and stability of the oil. The dewaxing process involves cooling, crystallization and filtration of the oil
After these steps, you can get high quality refined rice bran oil that can be used for cooking or other purposes. Rice bran oil has many benefits, such as high smoke point, mild flavor, rich in antioxidants and healthy fats.
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