Our life is strongly connected with the oil in every aspect, the most basically, our three meals a day needs the edible oil. The edible oil sends our food into more delicious, particularly some vegetables cannot display its nutrition role until being cooked through the edible oil.
Meaing animal or vegetable oil which is used in food cooking process, the edible oil is also called "cooking oil". Under the normal temperature edible oil is the liquid state, but massive nutrients is included in this liquid, in the cottonseed oil includes the massive essential fatty acids, the linoleic acid content is the highest, may reach 44.0-55.0%, the linoleic acid can suppress cholesterol in the blood of human body, is advantageous in protecting human body health. In addition, in the cottonseed oil also includes 21.6%-24.8% palmitic acid, 1.9-2.4% stearic acids, 18%-30.7% oleic acids and a spot of arachic acids, digestion absorption rate of the human body to the cotton oil is 98%. The massive linoleic acid included soybean oil has an important physiological function. If baby lacks the linoleic acid, the skin becomes dry, the squama crumb accumulates, the growth will slow down; if senior citizen lacks the linoleic acid, will cause cataract and cardiovascular and cerebrovascular diseases.
Ordinarily the edible oil we see is shines limpidly, but before the oil becomes edible it must go through several working procedure, even if must pass through the multi-channel working procedure before the processing. Pretreatment for Oil Processing is consisted of oilseed cleaning and selecting, oilseed dehulling, oilseed softening, oilseed flaking, oilseed filtering and oil extruding.
The oilseed cleaning and selecting machinery must be earnest in the preparation of dangerous it will face during the oil process. Perhaps the impurity in oilseed will damage the oil mill equipment in cleaning and selecting process, maybe the impurity in seed will stop up the equipment. Prevent chaff from absorbing oil as well as being expelled from the oilseed cleaning equipment. Stone in oilseed possibly damages the screw in the oilseed cleaning and selecting oil extraction equipment and the sand in oilseed can fray the machine.
After cleaning, the oilseed for example peanut needs to transmit to separate the kernel in the oilseed dehulling equipment. Peanut which is still unhulled will be recycled within the equipment until properly dehulled. The efficiency of the dehuller is about 95 to 98 percent, with the rate of broken kernels at 2 to 5 percent. Before sent to the oilseed conditioner for further processing, oilseed will go through the machinery to increase the moisture and temperature to soften them. Those oilseeds with more rigid structures and lower moisture content are then processed into powder by the oilseed flaking mill. Then oilseed will be conveyed to oilseed flaking machine to burst its cell tissue, increases its surface area to enhance oil extraction rate. After extracted from the oilseed, the oil will be conveyed to oil filtering machine.