Different extraction methods of rice bran oil: pressing and solvent Extraction

Rice bran oil is an edible oil made from the byproduct of rice processing, rice bran. It is rich in a variety of nutrients such as vitamin E and unsaturated fatty acids, which have many benefits for human health. There are two extraction methods of rice bran oil: rice bran oil pressing method and rice bran oil solvent extraction method. These extraction methods of rice bran oil aim to extract the oil from rice bran, but their cost and oil yield are different.

Small-scale rice bran oil pressing method

The rice bran oil pressing method is a physical squeezing method suitable for small-scale production. Before extracting rice bran oil, the raw material needs to be pre-treated to ensure optimal moisture and temperature, which can increase the oil yield. Pretreatment includes cleaning, drying, and other steps to effectively remove impurities and moisture from the raw material, thereby increasing the oil extraction rate. In small-scale production, a rice bran oil press machine can be used for physical squeezing to obtain the oil. The rice bran oil press machine is a simple mechanical device that can squeeze the oil from the raw material. The use of this machine does not require too much technical knowledge, only following the instructions. In addition, the maintenance of the rice bran oil press machine is straightforward, requiring only regular cleaning and maintenance. Therefore, the rice bran oil press machine is a very suitable device for small-scale production, which can convert rice bran into useful edible oil and increase income.

Rice bran oil press machine photo

Large-scale rice bran oil solvent extraction method

Large-scale rice bran oil solvent extraction method is another method for extracting rice bran oil, which is recommended for obtaining oil. The rice bran oil solvent extraction method is a chemical method that uses a chemical solvent to extract oil from the raw material. Compared with the rice bran oil pressing method, the rice bran oil solvent extraction method has a higher oil yield but also higher cost. In addition, the rice bran oil solvent extraction method requires the use of chemical solvents, which have some impact on the environment, so environmental protection issues need to be considered. Therefore, when using the rice bran oil solvent extraction method, it is necessary to choose environmentally friendly and safe chemical solvents, strictly control the amount used and emissions, and reduce the impact on the environment.

Rice bran oil solvent extraction machine photo

The process of rice bran oil solvent extraction method includes solvent extraction, mixed oil steam distillation, wet meal decolonizing, and solvent condensation and recovery. In the rice bran oil solvent extraction method section, a chemical solvent is used to remove oil from the raw material. In the mixed oil steam distillation section, the solvent is removed from the mixture by controlling the temperature and pressure. In the wet meal decolonizing section, the solvent is extracted from the filter cake. In the solvent condensation recovery section, the gaseous solvent is condensed into liquid for recovery. The entire technological process needs to strictly control the parameters of each link to ensure that the extracted oil is of high quality and meets edible standards. Although the cost of rice bran oil solvent extraction method is higher, it is suitable for large-scale production. (Recommend reading: Rice bran oil solvent extraction machine) 

The refining process method of rice bran oil

Regardless of whether it is the rice bran oil pressing method or the rice bran oil solvent extraction method, the obtained crude oil needs to be refined before use. Refining is the process of removing impurities and undesirable components from crude oil to make it meet edible standards. The refining method includes deacidification, deodorization, decolorization, and other steps. After refining, rice bran oil is purer, has a milder taste, and is more suitable for people’s tastes.

Rice bran oil refining machine photo

The above is an introduction to two extraction methods of rice bran oil. If you want to learn more about rice bran oil extraction methods or how to choose equipment for extracting rice bran oil, please contact us. As a professional manufacturer of rice bran oil extraction equipment, Henan Glory company will provide customized services according to your requirements.