Different Edible Oil Press Method of Oil Processing Machinery

Press has a long history, and its process is relatively simple: the oil steamed, fried after using mechanical method of oil squeezed out from oil. The old press method of edible oil need to operate the personnel to pay the heavy manual labor. Oil and pressed (cake), residual oil content is very high, thus it is also wasting valuable oil resources. Press method is modern industrial automation operation, but the high oil content in oil residue problem still cannot be solved.

From the press of the raw material pre-treatment to distinguish between cold pressing and hot pressing method, it is also known as the pressing method. Cold pressing is put the raw material into the equipment to squeeze out the edible oil and not after baked fried or steamed, and the oil color is relatively shallow, color more bright, but the oil rate is low, and oil flavor is not strong, mellow. At the other hand, cooked pressed to the oil-bearing crops before squeezing after drying. The purpose is to reduce raw material moisture and increase the oil molecules are active and liquidity, and improve the rate of oil and ensure the oily smell fragrant. But this method also damage the chemical composition of the oil, leading to the color of the oil deeper and more black.