![Rice Bran Oil Extrusion Processing by Huatai Machinery]()
Rice bran oil, extracted from rice bran—a by-product of rice milling—is a highly nutritious edible oil. It is rich in components like oryzanol, phytosterols, and vitamin E, which are significantly higher than those in other edible oils. However, due to its low oil content, rice bran is not suitable for traditional pressing methods, which have low efficiency and output. Instead, the extraction process often involves extrusion and solvent extraction techniques.
Extrusion Process
Extrusion is a crucial step in rice bran oil processing. Huatai Oil and Grain Machinery Company has developed advanced extrusion technology to enhance the efficiency and quality of rice bran oil production. The extrusion process begins with the pre-treatment of rice bran, which includes separation of impurities such as broken rice and coarse bran shells. The bran is then conditioned to achieve the optimal temperature and moisture levels for extrusion. During extrusion, the rice bran is subjected to high pressure and temperature, which destroys the cell structure, increases the porosity, and improves the permeability of the material. This process not only enhances the efficiency of oil extraction but also deactivates enzymes that can cause oil degradation.
Solvent Extraction
After extrusion, the rice bran is processed through a solvent extraction system. The extruded rice bran is thoroughly mixed with a solvent, typically hexane, to dissolve the oil. The mixture is then separated into crude oil and defatted bran. The crude oil undergoes further processing to remove the solvent, resulting in rice bran crude oil. This method significantly increases the oil yield and maintains a low residual oil content in the defatted bran.
Advantages of Extrusion and Solvent Extraction
The extrusion and solvent extraction method offers several advantages. It allows for large-scale production, preventing the degradation of rice bran during storage. The process also ensures a high oil yield and maintains the nutritional value of the oil. Additionally, the defatted bran retains a high protein content, making it suitable for further processing into high-value products.
Huatai Oil and Grain Machinery Company has been at the forefront of rice bran oil processing technology. They have designed and manufactured numerous rice bran oil production lines, including a 100T/D rice bran extrusion and extraction project for Heilongjiang Wuchang City. These projects demonstrate Huatai's commitment to innovation and efficiency in the rice bran oil industry. Their advanced extrusion and extraction technologies not only improve the yield and quality of rice bran oil but also contribute to the sustainable utilization of rice bran, a by-product that would otherwise be underutilized.
