Pressage à chaud et à froid de l’huile d’arachide
Peanut, formerly known as groundnut (Arachis hypogaea Linn.), belongs to Rosales, is a commonly used oil crop for edible oil. The peanut oil that we often eat is vegetable oil that is squeezed from peanuts through an oil press. Peanut oil is light yellow, transparent, bright in color, fragrant and delicious. It is a relatively easy to digest edible oil. Peanut oil contains more than 80% of unsaturated fatty acids (41.2% of oleic acid and 37.6% of linoleic acid). It also contains 19.9% of saturated fatty acids such as palmitic acid, stearic acid and arachidic acid. The fatty acid composition of peanut oil is relatively good, which is easy for the human body to digest and absorb. Let's take a closer look at the issue of peanut oil extraction.
When we use screw presses for peanut crops, we often encounter the question of whether cold pressing or hot pressing is better? In fact, there is no exact definition of which kind of pressing is good. Customers should choose cold pressing or hot pressing according to the actual situation. Different oil crops have different pressing methods. These oil crops such as sesame and tea seeds must be hot pressed to increase the oil yield. Melon seeds are also known as oil sunflowers. Such oil crops must be cold pressed. Some oil crops can be cold pressed or hot pressed, and it does not affect the oil yield of oil crops. We suggest that when the oil press is squeezing peanuts and soybeans, the user of the oil press should try to choose more hot pressing. Let's talk about some small issues to pay attention to about hot pressing and cold pressing.
First: When oil crops are cold pressed, the oil crops are generally pressed twice;
Second: When oil crops are hot pressed, the oil crops are usually pressed once;
Third: Hot pressing is generally a bit higher than cold pressing, but it is not always true. We have to analyze according to the specific situation. Some users report that the oil output rate of using an oil press is not as high as that of buying a machine. Because the oil production rate is determined by several factors. Generally, the following points are:
1. The moisture of oil crops is the key;
2. Temperature control of oil crops;
3. User experience in pressing technology of oil press;
4. The oil content of oil crops;
If you want to buy a screw press, please contact our sales staff, our sales staff will provide you with the price of the screw press, the price of the hydraulic press and the technical parameters.