The oil expeller is a mechanical device for pressing oil crops, the types of pressing can be divided into two types: hot pressing and cold pressing. What are the differences, advantages, and disadvantages between them?
Cold Pressing of Oil Expeller
As the name suggests, it means that after cleaning, the oil seeds are not heated, and are directly put into the oil press for pressing. This kind of pressing method is challenging to squeeze oil out at once, and the oil cake produced also has an oil content. Some require this type of oil cake.
The advantage of cold pressing is that the oil color is lighter, there will be no foaming when the oil is pressed, there will be no phenomenon of stagnation, and the color is better.
The disadvantage is that the taste of the oil is not very fragrant, and it takes more than two times to squeeze the oil clean.
Hot Pressing of Oil Expeller
Hot pressing is just the opposite of cold pressing. The oil seeds are pressed after heating. This pressing method can extract oil from oil seeds clean at one time, and the oil cake produced has almost no oil content, so the oil cake is completely deoiled. , which can be used when making oil-free cakes.
The advantage of hot pressing is that the pressed oil is very mellow, and the heated oil is more oily than cold pressing, but because it is hot pressing, sometimes there will be a phenomenon of stagnation. It should be noted that when pressing, don’t be too anxious to feed the material and feed the material in an appropriate amount according to the oil output of the pressing.