In the oil extraction industry, physical pressing and chemical pressing are the two main methods of oil extraction. Both methods have their advantages and disadvantages, and which one to choose depends on factors such as the type of oil, the expected product quality, and the cost of production. The purpose of this article is to provide readers with a comprehensive and in-depth understanding of the working principles, characteristics and application scenarios of these two methods.
Physically pressed oil relies mainly on mechanical force to separate the oil from the oil at high pressure. No chemical reactions are involved in this process, so the extracted oil usually retains its natural flavor and nutrients.
Natural and healthy: Physical pressing oil does not involve chemical solvents, and the resulting oil is purer and has no residue.
High quality: Since it is not chemically processed, the flavor and nutritional value of the physically pressed oil are preserved.
Chemical oil pressing uses chemical solvents, such as n-hexane, to extract the oil from the oil. This process requires a series of chemical reactions to separate and purify the oils and fats.
High yield: Chemical pressing can often lead to higher oil yields.
Flexibility: The chemical method is suitable for a wide range of oils and can adjust the quality and characteristics of the product.
In the "Vegetable Oil Processing Technology Manual", the process flow, equipment selection and product quality control of physical and chemical oil pressing are described in detail, which provides valuable reference materials for the oil extraction industry.
The choice between physical and chemical oil pressing depends on a number of factors, such as the quality of the oil required, production costs, and market demand. Physically pressed oils retain the natural properties of the oil, making it suitable for markets that value high quality and natural flavorsChemical pressed oils, on the other hand, are more suitable for large-scale production and specific applications due to their high yield and production flexibility. Considering the advantages and disadvantages of these two methods, manufacturers should make a reasonable choice according to their own needs and conditions.
It is hoped that through the detailed introduction and analysis of this paper, readers can have a more comprehensive understanding of the characteristics and applications of physical and chemical pressed oil, and provide a strong reference for decision-making in related fields.