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Oil press manufacturers analyze peanut oil pressing process

August 12, 2021

Ⅰ. The peanut oil pressing process can be divided into hot pressing and cold pressing.

1. Hot pressing: the oil-making process of steaming and frying in hot state and pressing with skin. At first, the raw materials must be fried in the pot, and then the oil is pressed through the oil press. The advantages of the hot pressing process are oil fragrance, high oil yield, and low residual oil. However, the disadvantage is that the biological activity of the raw material itself is reduced after the hot-pressed raw material is processed at a high temperature.

2. Cold pressing is to reduce the process of high-temperature heating. It is made by separating the oil from the raw material by relatively large physical and mechanical pressure, and then purifying and refining it. Cold pressing incorporates modern high-tech filtration and purification technologies. The entire production process is pollution-free, and the natural nutrition of the product is not damaged. It reduces the processes of steaming, frying, leaching and other processes that increase the oil yield, and retains the original Some biological activity.


peanut oil


Ⅱ. Comparison of peanut oil squeezing process flow:

1. Hot pressing process

Mixed grade peanuts→cleaning and impurity removal→crushing→steaming and frying→squeezing→crude oil→refining→finished oil→feed-grade peanut cake

2. Cold pressing process

Selected high-quality peanuts with more than 6 sieves→removing red coat→peanut kernels→cleaning and removing impurities→tempering→cold pressing→cold pressed crude oil→coarse filtration→cleaning→high-quality cold-pressed oil→fine peanut cake→crushing→peanuts Protein powder


oil pressing equipment


Ⅲ. Advantages of peanut oil cold pressing technology:

1. No protein heat denaturation

2. No solvent residue

3. Contains natural antioxidant ingredients

4. No aflatoxin

5. Does not contain genetically modified (GMO) ingredients

6. No cholesterol content

7. Free of chemicals and preservatives

8. Do not destroy various nutrients in peanuts

9. High smoke point, less oily smoke


Spiral cold press oil press


Because of the light color of the cold-pressed oil product, the content of phospholipids is extremely small, the nutritional factors have not been destroyed by high temperature and can be preserved to a large extent. The crude oil does not require complicated refining, and can be eaten only by physical filtration. It is called "green nutrition" Oil". High-end oils such as rice bran oil, olive oil, camellia oil, linseed oil, and walnut oil are all produced by cold pressing. From the perspective of the development of oil extraction technology and the improvement of consumers’ health concepts, cold pressing will become the dominant oil production process in the future .