In the summer, sunflowers bloom under the clear sky, and now many sunflowers ushered in the ornamental period, tens of thousands of sunflowers bloom and form a vibrant pastoral landscape, which looks like a golden ocean from afar.
Sunflower not only has strong ornamental value, but also is one of the important oil crops after soybean, rape and peanut. It is widely planted in many places in China. Sunflower seed oil is the edible oil extracted from sunflower seeds by pressing or leaching, and is rich in oleic acid, linoleic acid, unsaturated fatty acid, vitamin E, carotene and other nutrients. It is good for human health.
With the development of the overall living standard of Chinese residents in the direction of pursuing health, people gradually realize that the choice of edible oil in order to achieve a balanced diet should be multi-directional. Sunflower oil is a healthy edible oil with rich ingredients. Sunflower seed oil contains sterols, vitamins, linoleic acid and other substances beneficial to human beings, among which vitamin E content in many main vegetable oils belong to the higher content, linoleic acid content can reach about 70%, which is beneficial to low serum cholesterol level. Sunflower oil also has the advantages of high smoke point and easy absorption. In recent years, the domestic demand and consumption of sunflower oil have shown a rapid growth trend.
The oil content of sunflower seeds is usually between 40% and 50%, and some oil content can reach 45% to 60%, which belongs to high oil content. In industrial production, sunflower seed oil is usually extracted by traditional pressing method. The advantage of pressing oil is that it is simple to operate, and no other substances are added in the production process, which can better retain the flavor of sunflower oil. If sunflower oil is extracted by hot pressing method, Maillard reaction will also be produced, which can enhance the flavor of sunflower oil, so that it has a good taste and light fragrance.
The hot pressing of sunflower seeds refers to the process of steaming, baking and other processes before the oil is transported to the spiral oil press. Regardless of the oil plant, microwave heating is also used. No matter what kind of heat treatment process, the oil plant needs to pay attention to the control of the time and temperature of the heat treatment.
Therefore, oil plants should pay attention to controlling external conditions such as heating temperature and time when conducting thermal assistant for sunflower oil, so as to lay a solid foundation for producing healthy and nutritious oil. Of course, if you want to produce healthy and nutritious edible oil, it is difficult to achieve by pressing process alone. In order to ensure the health of edible oil, the oil plant also needs to refine the sunflower oil obtained by pressing.
In addition to the conventional degumming, deacidification, decolorization and deodorization process, sunflower oil refining also needs to add dewaxing process, which is because sunflower seed shell contains a small amount of wax, although the press is husked, considering that the oil content of sunflower seed kernel is too high, if the pure kernel is pressed, the oil will slip phenomenon, so a small amount of shell will be added to sunflower seed kernel. This results in a high waxy content of the resulting oil.
Generally speaking, the wax in vegetable oil has no direct adverse effect on the human body, but the presence of wax will affect the absorption of sunflower oil by the human body. In addition, the wax in vegetable oil will automatically precipitate and suspend in the oil at low temperature, which makes the color of sunflower oil difficult to meet the expectations of consumers. Therefore, the dewaxing process needs to be added to the refining of sunflower oil.
Before dewaxing the crude oil, it is necessary to ensure that the wax content in the oil is uniform and stable, so the level of wax content in the crude oil will affect the production process of the oil plant. The wax content in sunflower seed oil produced by different manufacturers is different, which means that the oil plant wants to achieve the ideal dewaxing effect, it is recommended to cooperate with strong and experienced grain and oil machinery and equipment manufacturers. Thus according to their own actual situation to obtain the appropriate refining process.
Henan province is one of the important sunflower planting areas, the local sunflower planting area accounts for one-third of the total domestic sunflower planting area, the annual output of sunflower is not a few, Qifeng machinery manufacturers with the advantages of near the water floor first month, the production and processing of sunflower oil fully understand. There are not a few sunflower oil extraction and refining projects in cooperation, with rich experience and mature technology, we can give customers reasonable production plans, worthy of your trust.
