High temperature causes the dark color of crude oil and acid value increasing, so crude oil must be refined before consumption. In hot press’s pretreatment process, oilseed would be steamed at high temperature that changes occur in the oilseed inside such as the destruction of oil cells, promotion of protein denaturation, oil viscosity reduction, etc., in order to enhance oil yield. The differences of the cold press and hot press are as follows. Oil pressing extraction process consists of pretreatment, pressing and refining, and it is divided into hot pressing and cold pressing due to the pressing temperature. For secondary oil application, it could be processed into refined oil by refining, or as the power source in the factory the secondary oil could also be used as animal feed without adding extra grease. Therefore, the residual oil in the cake should be extracted by re-squeezing or leaching process, and the secondary oil is obtained. If by increasing cold press machine pressure to reduce the residual oil content, along with the cold pressed oil quality would be declined. In general, the cold pressed cake has 12-20% of the residual oil. Cold pressed cake contains a high amount of residual oil.Cold pressing could maximally preserve the original flavor of the oil and meet the requirements of green, organic and pollution-free food standard.
After cold pressing, the cooking oil only gained by filtering, drying or other simple refined ways can meet primary food standards, thus avoiding the cold pressed oil being polluted by direct contact with lye, bleaching clay and phosphoric acid in the refining process and oil’s stability being damaged by the high temperature of refining.
#Cold press oil extractor full
The cold press uses a full physical and mechanical oil making method. Cold press oil machine is environment-friendly and pure-natural.Compared with the conventional press machine, the cold press has greatly improved the quality of the oil. YJY-D1 type cold press machine could retain the biological activity of various unsaturated fatty acids and other oil-soluble nutrients such as vitamin E, A in oil maximally. YJY-D1 type cold press could improve oil quality.The oil product is clear, transparent and authentic.Ĭharacteristics of YJY-D1 Type Cold Press Machine The machine is equipped with the positive pressure oil filtration system, which is able to quickly remove impurities from crude oil particles.The use of infrared heating technology to ensure that all seasons can be squeezed.The amount of slag is less and the discharged oil is clear. The machine is made up of steel rod barrel structure to discharge oil.Both for cold press and hot press: the cold press is equipped with automatic bucket-type promotion, and circulation squeezing twice While hot press generally uses one-time squeezing.The squeeze chamber temperature is low and oil nutrition won’t lose. The cold press can process a wide variety of oil without steam frying material.
Energy saving, small load, and low noise.
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