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The production process of sunflower oil is generally divided into pressing method and leaching method (refining method).Pressing method, also known as "physical pressing method", is to extrude the oil in the oil by external force, not suitable for other chemical solvents and so on, avoiding the residual organic solvents in the oil.The crushing process retains the most active ingredients in sunflower seeds, such as polyunsaturated fatty acids, protein, dietary fiber, vitamins, trace elements and other nutrients beneficial to human body. It is more suitable for special supplements for human health.
Sunflower seed oil is one of the major oil sources in northern China. It is rich in linoleic acid (54%-70% of the total fatty acid content) and oleic acid (39%) and has high nutritional value, but crude oil contains trace wax (about 0.10%) and oxygen acid, which affects the quality and storage stability. Sunflower seed oil on sale can be classified into two grades: crude and refined edible oil.
Sunflower Oil Extraction (Refining):
Sunflower oil extraction process is also known as leaching oil. It uses organic solvents (such as gasoline, ethanol, etc.) to extract oil. The leaching method is a kind of oil-making process that uses solvent oil (No. 6 light gasoline) to soak the oil raw material and extract it at high temperature so that the oil can be extracted. Initially, the "oil" is a mixture of organic solvents and oils, which can not be eaten. It can only be eaten after a series of refining processes (dewaxing, degumming, dehydration, deodorization, deacidification, decolorization, etc.). The oil is generally lighter in color, and the original natural odor of the material seeds is light or has no obvious odor. The extraction process can extract almost all the oil from the oil, which has a very high economic benefit and is the most popular processing method in the modern oil industry.
Sunflower Oil Production Plant:
Advantages: It retains almost all the nutrients in sunflower seed oil, has a refreshing and non-greasy taste and rich polyunsaturated fatty acid content.Disadvantage: Low oil yield and relatively high cost Sunflower oil extraction.Advantages: high oil yield, low cost and higher economic benefit. The most popular processing method in modern oil industry. Disadvantage: It destroys part of the nutrients and has trace organic solvent residues (in line with national standards).
Sunflower Oil Production Plant:
The oil extracted from sunflower seeds is called sunflower seed oil. The oil is golden, clear and bright, with some delicious fragrance. It is the main edible oil of Europeans and Russians. Sunflower seed oil is pure, clear and transparent, fragrant and delicious. Because it is rich in linoleic acid and nutrients to maintain human health, it is known as "health care products", "high-grade nutritional oil" or "health oil" abroad.Sunflower oil is a healthy edible oil famous for its high content of linoleic acid. According to Professor Cao Wanxin, Xi'an Oil Research and Design Institute of the State Food Reserve Bureau, in the 21st century, cardiovascular and cerebrovascular diseases such as coronary heart disease, stroke, cerebral thrombosis, arteriosclerosis, hypertension and other diseases increased, and long-term consumption of appropriate oil products can greatly improve the above symptoms. Sunflower oil is one of the most excellent health oils. Sunflower seed oil has become the preferred oil for consumers and chefs. Sunflower seed oil consumption ranks third among all vegetable oils in the world.
Sunflower seed oil contains sterols, vitamins, linoleic acid and other beneficial substances for human beings. Natural vitamin E content is the highest in all major vegetable oils, while linoleic acid content can reach about 70%. Sunflower seed oil can reduce serum cholesterol level, triglyceride level and blood pressure. In addition, sunflower seed oil is light and transparent, while cooking, it can retain the flavor of natural food, and its smoke point is very high, which can avoid the harm of oil fume to human body.The refined sunflower seed oil is bright and beautiful light yellow or blue-yellow, with fragrant smell and pure taste. The composition of fatty acids in sunflower seed oil is influenced by climatic conditions. The oil produced in cold areas contains about 15% oleic acid and 70% linoleic acid. The oil produced in warm areas contains about 65% oleic acid and 20% linoleic acid. The human digestibility of sunflower seed oil is 96.5%. It is rich in linoleic acid, which can significantly reduce cholesterol, prevent vascular sclerosis and prevent coronary heart disease. In addition, the content of tocopherol a, which has the strongest physiological activity in sunflower seed oil, is higher than that in vegetable oil. Moreover, the ratio of linoleic acid content to vitamin E content is balanced, which is convenient for human body to absorb and utilize. Therefore, sunflower seed oil is a good edible oil with high nutritional value and beneficial to human health.
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