Recent years, with the continuous improvement of people's living standards, people are increasingly popular in cold areas edible oil extraction. Cold oil extraction is not heated before pressing oil or low state, the oil press squeezing given away. Squeeze the oil temperature is low, acid value is low, generally do not need refining, obtained after precipitation and filtration of oil.
Cold oil extraction with pure natural features, to avoid the traditional high-temperature processing of the adverse effects of oil extraction. Cold-pressed oil retained in the natural flavor and color of oil, the complete preservation of the oil in a physiologically active substance (vitamin E has anti-aging, skin sterol with a health role and enhance human metabolic function), cold oil extraction authentic, healthy life choices. But most are not suitable for cold-pressed oils, soybean, high erucic acid rapeseed, cottonseed, peanuts, sesame seeds, for example, soybean oil contains beany flavor, high erucic acid rapeseed oil in a spicy flavor, cottonseed oil in gossypol toxin and aflatoxin in oil deterioration, etc., must be refined to remove. And the smell of fragrant peanut oil and sesame oil, and must go through to get hot pressing process.
Cold expellers of raw materials must be selected, otherwise the maturity of raw materials and raw materials contained in the various harmful substances (such as: mildew of aflatoxin in oil and gossypol in cottonseed toxins) the impact will be on the cold serious impact on the quality of oil extraction. General Mining said, cold-pressed smoke point is low, moisture instability, is not conducive to long-term storage. Cold-pressed generally need to go out of fuel after crushing, secondary crushing sometimes had three times the press. Hot pressing is generally used for large machines pre-press, which is the first oil, but there are also some manufacturers directly after improved models for oil extraction, no other equipment.
Oil is cold pressed without going through the pan fried, it can be called cold-pressed oil extraction machine machine. Cold-pressed oil color is good, more pale, greasy but not fragrant, do not get angry. The key is cold-pressed oil in the frying something when no foaming, no silt pot.
Extra virgin oil is cooked and then squeezed through the pan fried, cooked greasy oil extraction pure, delicious, especially the kind of oil rich sesame peanut is fragrant. Disadvantage is not treated in time when things will be fried pot frothing silt pot, but after simple treatment can solve this problem. Hot and cold dual-use both can take into account is this.