Types of Edible Oil
According to the source of oil, edible oil is divided into animal oil and vegetable oil.
1.Animal oil refers to the oil that is fried and refined from animal fat, containing high saturated fatty acids and cholesterol. Such as lard, sheep oil, butter and so on.
Advantages: tastes sweet, and the flavor has the function of promoting the absorption of fat-soluble vitamins A, D, E, K, etc. The cholesterol in it is an important component of human tissue and cells, and an important raw material for the synthesis of bile and some hormones.
Disadvantages: long-term consumption will lead to high cholesterol, elevated triglycerides, atherosclerosis, elevated blood lipids, elevated blood pressure, elevated blood sugar, coronary heart disease and other diseases. So we can not eat more, should try to eat less.
2.Vegetable oil is a compound of saturated and unsaturated fatty acids, obtained from the fruits, seeds and germ of plants.Such as corn oil, peanut oil, soybean oil, olive oil, rapeseed oil, raphani seed oil.Vegetable oil mainly contains vitamin E, K, calcium, iron, phosphorus, potassium and other minerals and fatty acids.
Grades of Vegetable Oil
The vegetable oil grade in our country is divided into four grades: first grade, second grade, third grade and fourth grade.
Here you will definitely think that the higher the grade of oil is, the better. Actually, it is not. All oil is good.Grade 3 and grade 4 oils have some inherent flavor and are odor-free.So usually buy some time do not need to buy the oil of high grade painstakingly, according to the way that cook and oneself taste go choosing is ok.
The Processing Technology of Vegetable Oil
Chemical Leaching and Physical Pressing
1.Physical pressing is the physical machinery of the enormous pressure to separate oil from the raw materials, refined and refined.
The pure physical pressing method integrates modern science and technology, especially in the process of full closed, pollution-free mechanized pressure oil production technology, high-tech extraction and other technologies.It has the features of the whole process free of pollution, natural nutrition of the product free from damage, original taste and flavor.Its safety, health, nutrition by domestic and foreign consumers love.
2.Chemical leaching: the separation of oil from oil plants by chemical method.
The “no. 6” solvent oil (no. 6 light gasoline) is mainly used to soak oil raw materials, then extract them at high temperature, and then refine them through the 6 process (i.e., degreasing, degumming, dewaxing, decolorization, deodorization and deacidification).This production method has high oil yield and low cost, but it is inevitable that there will be solvent residue in edible oil. Therefore, the state leaching residual solvent has a strict regulation.