About Sunflower Oil And What To Do With Sunflower Seeds

Sunflower kernel oil is a kind of high nutritional value of cooking oil, high temperature does not smoke, suitable for frying, frying food and do western pastries, pastries and margarine, it contains a lot of linoleic acid and other essential unsaturated fatty acids, can promote the regeneration and growth of human cells, protect skin health, and reduce cholesterol in the blood deposition, so it is a high-level nutritional oil. It contains linoleic acid, which is an essential fatty acid for human body, helps human development and physiological regulation, and also has a positive effect on preventing dry skin and scaly hypertrophy. Sunflower kernel oil contains sterols, vitamins, linoleic acid and other substances beneficial to human beings, among which the content of natural vitamin E is the highest in all major vegetable oils, and the content of linoleic acid can reach about 70%. Sunflower kernel oil can lower serum cholesterol level, lower triglyceride level, and lower blood pressure. Moreover, sunflower kernel oil is light and transparent, can retain the flavor of natural food when cooking, and its smoke point is also high, which can avoid the harm of oil smoke to the human body. Sunflower kernel oil is rich in carotene, more than peanut oil, sesame oil and soybean oil.

Conventional sunflower oil production process includes sorting, drying, rolling, pre-pressing, leaching, refining and other processes, sunflower seeds with shell pressing to produce oil or partial husking to produce oil. When pressed, the raw material contains about 10% to 30% of the shell, the black pigment contained in the shell itself and the dust and other pollutants adhered to the shell degree, some of which remain in the cake meal after oil production, and the other part will enter the oil, thereby increasing the impurity in the oil and bringing certain pollution to the oil. The shell composed of cellulose, hemicellulose and lignin, because of its loose structure and containing a large number of pores, will absorb a lot of oil and stay in the cake during the oil making process, resulting in the loss of oil and affecting the production efficiency. The wax contained in the shell will also enter the oil during the oil making process, so that the oil will appear cloudy at a lower temperature, if you want the oil to become clear and transparent, you must add a dewaxing workshop, which does not increase the investment cost, but also increase the production cost. The shell contained in the pressing raw materials will not only reduce the processing capacity of the oil pressing workshop such as steaming pan, oil pressing machine and other equipment, but also cause the wear of the equipment due to the harder sunflower shell, shorten the service life of the equipment, thereby increasing the production cost and reducing the production efficiency.

The physical pressing process of sunflower kernel oil includes the following steps:

1) Material selection and husking: the sunflower seeds after harvest are screened to remove impurities. After removing impurities, the shell of the sunflower seeds is peeled and the shell is separated from the sunflower kernel to obtain pure sunflower kernel;

2) Roasting: roasting sunflower kernel;

3) Press: press the roasted sunflower kernel, squeeze out the oil drops under pressure, and separate the sunflower meal to obtain the gross oil;

4) Filtration: Through the filter, the crude oil to remove impurities and sediment, improve the quality of crude oil, extend the shelf life.

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