Rice bran oil is a kind of edible oil extracted from the germ and the inner husk of rice. It has a high smoke point and a mild flavor, making it suitable for high-temperature cooking methods. Rice bran oil also has many health benefits, such as lowering cholesterol, fighting diseases, enhancing the immune system, and fighting free radicals. If you are interested in buying a rice bran oil manufacturing machine, you may want to know more about the processes of making rice bran oil. Here are some brief introductions based on the web search results:
Rice bran oil expelling: This process uses a screw oil press machine to squeeze the oil out of the rice bran. The rice bran must be fried first to improve the oil yield and quality. The screw oil press machine has a small gap between the squeezing barrel and the screw worm, which can prevent the rice bran oil cake from escaping.
Rice bran oil extraction: This process uses a solvent, usually hexane, to extract the oil from the rice bran oil cake. The solvent penetrates and percolates through the oil cake in a counter current and moving bed manner. Then the solvent is vaporized and recovered, leaving behind the crude rice bran oil.
Rice bran oil refining: This process removes impurities and unwanted components from the crude rice bran oil, such as gums, free fatty acids, pigments, odors, and waxes. The rice bran oil refining process usually includes filtering, neutralization, degumming, decolorization, deodorization, and dewaxing. The refined rice bran oil is ready for cooking or further processing.