FIRST screw press technician lecturing it! Advantages and disadvantages for you on the hot pressing process and the process of cold pressing
FIRST screw press technician lecturing it! Today, as we explain what the hot pressing process and cold pressing process strengths and weaknesses? Which is better?
Our daily lives are mostly edible vegetable oil hot oil, that is, before the first oil extraction of oil after cleaning, high temperature heat treatment after the break, making a series of changes inside fuel: fuel cell destruction, prompting protein denaturation, reduce fat viscosity, etc., to be suitable for the press to take the oil and improve the oil yield.
Advantages hot pressing process: hot pressing, is the roasted seeds to extract oil crops, especially the smell of incense, the deeper the color, the higher the yield. The residue remaining in the product is less easy to save. The cold pressed without the roasted seeds, so bad smell, but the color is good. Two kinds of press law no solvent residue. Heat pressing: steaming hot fried, skin pressed oil process. First you have the raw material into the pot and stir, and then carried through the press is oil, the advantages of such a process is oil incense oil is high, and low residual oil remaining.
The disadvantage hot pressing process: But after the high-temperature treatment by oil squeeze color darker hair oil, acid value increased, so before eating crude oil must be refined. At the same temperature so that the oil in the oil extraction of bioactive substances (vitamin E, sterols, classes vegetarian carrots, etc.) in the press during the great loss, resulting in a waste of resources.
In recent years, with the improvement of people's living standards, more and more people of all ages in terms of cold edible oil extraction. Cold oil extraction is in front of the press without heating oil or low state, into the screw press press. Squeeze lower oil temperature, acid value is low, generally do not need...