The current mainstream edible oil extraction processes mainly include physical pressing and chemical solvent extraction. These two methods have their own characteristics and are suitable for the processing needs of different oil crops. Is it better to process edible oil by pressing or solvent extraction? This article will comprehensively compare the two processes from multiple dimensions to help consumers understand the impact of different processing methods on the quality of edible oil.

It is recommended to adopt the edible oil pressing method for high oil content oils.

Reason one: The edible oil pressing method adopts the extrusion method to extract oil according to the characteristics of the oil. The pressing process completely belong to physical processing technology and does not add any chemical substances, so that the pressed oil not only retains its color and pure fragrance, but also reduces the loss of nutrients and owns high nutritional value.

Reason two: For oil with high oil content, the residual oil rate in the oil cake can be reduced to 6% to 7% by the pressing method. Most of the oil has been extracted, and the remaining residual oil is negligible. Therefore, extracting high oil content oil by the pressing method is quite feasible.

Edible oil pressing and solvent extraction plant

It is recommended to adopt the edible oil solvent extraction method for low oil content oils.

Reason one: The edible oil solvent extraction method adopts principles of chemical extraction to extract oil. Solvent extraction can fully extract oil from raw materials but pressing method can’t realize. The residual oil rate is 5%-8% by the pressing method. But, using the solvent extraction method to make oil, the residual oil rate can be below 1%.

Reason two: Compared with the oil production by pressing, the production of oil by edible oil solvent extraction method can obtain the better quality of the meal because the operating temperature of the relevant process is relatively low, which adds feed value and helps to extract vegetable protein from the meal.

Reason three: Compared with theethod oil pressing method, the production line used in the solvent extraction is generally more complete and owns high automation. Besides, the solvent extraction workshop has few operators and low labor.

Besides, the edible oil pressing method and the edible oil solvent extraction method can be used together. For example, for high oil content oil, like, sunflower seed, rapeseed, sesame, peanut, people usually adopt pre-pressing and solvent extraction together. The method can realize the residual oil rate in the cake is reduced to less than 1%. Especially for large-scale edible oil processing factories, profits can be maximized.

Therefore, the edible oil pressing process and the edible oil solvent extraction process are just different oil processing methods, which are not directly related to the quality of the final oil product. As long as the appropriate edible oil processing equipment is selected according to the characteristics of the oil.

Edible oil pressing method and edible oil solvent extraction method each have their own irreplaceable advantages. The key to choosing is to clearly understand the usage needs and balance the budget. You should understand the characteristics of different processes and make rational choices based on specific uses, rather than simply judging which is better. As a professional manufacturer of edible oil processing equipment, Henan Glory Company has professional technical research and development team, equipment manufacturing team. If any questions about edible oil processing technology and edible oil processing machine, feel free to contact us.