Solvent extraction of edible oil is an important method widely used in edible oil extraction process, and its principle is mainly based on the solvent’s ability to dissolve oil. By selecting appropriate solvents, oil can be separated from raw materials efficiently, thus improving extraction efficiency and product quality. This method plays an important role in modern edible oil production.

The basic principle of solvent extraction is to use the affinity between solvent and oil to dissolve oil from raw materials. Commonly used solvents include hexane, ethanol, etc. These solvents have the characteristics of efficient dissolution of oil and fat, and are easy to recover and reuse. In practice, raw materials (such as soybeans, peanuts or rapeseed) are pretreated and contacted with solvents, which will dissolve the oil to form a mixed solution. Subsequently, the solvent is separated from the oil by distillation or other separation techniques, thus obtaining pure edible oil.

Compared with the traditional pressing method, solvent extraction method has obvious advantages. First of all, it can extract oil from raw materials more thoroughly and improve the oil yield; Secondly, the extraction temperature is low, which can effectively protect the nutrients in the oil; In addition, solvent extraction method also has the advantage of large-scale production and is suitable for large-scale industrial processing.

However, there are some challenges in solvent extraction of edible oil. For example, the selection and use of solvents need to be strictly controlled to ensure food safety and environmental protection requirements. In addition, the solvent recovery system must operate efficiently to reduce resource waste and environmental pollution. Therefore, in actual production, it is necessary to combine advanced technology and equipment to optimize the technological process to ensure product quality and production efficiency.

In a word, solvent extraction of edible oil, as an efficient and economical extraction method, plays an important role in modern edible oil industry. By continuously improving technology and technology, this method will provide greater support for healthy and safe edible oil production.