Do sunflower seeds need to be shelled before pressing oil?
As a common vegetable oil, sunflower seed oil is loved by consumers because of its high nutritional value and light taste. In the process of producing sunflower oil in sunflower oil processing plant, whether sunflower seeds need to be shelled is a matter of great concern. This paper will discuss this problem and briefly introduce the related knowledge of sunflower seed oil processing.
First, we need to know the structure of sunflower seeds. Sunflower seeds consist of shells and kernels, the shell is hard and difficult to digest, while the kernel is the main part of oil pressing and rich in oil. In order to improve the oil yield and oil quality, sunflower seeds usually need to be shelled before oil extraction.
The main reasons for shelling are as follows:
1. Improve the oil yield: The oil content in sunflower seed shells is extremely low. If oil is squeezed directly without shelling, the oil yield will be reduced and resources will be wasted. By shelling, more oil can be extracted from the seed kernel.
2. Improve the quality of oil products: The sunflower seed shell contains fibers and impurities. If it is not shelled, these substances may enter the oil and affect the purity and taste of sunflower seed oil. The oil extracted after shelling is clearer and of higher quality.
3. Protective equipment: sunflower seed shell is hard. If oil is squeezed directly, it may cause wear on the oil press and shorten the service life of the equipment. By shelling, the pressure and wear of equipment can be reduced.
However, in actual production, some small processing plants choose to extract oil directly without shelling. Although this method saves the shelling process, it is easy to lead to the decline of oil quality and may increase the difficulty of subsequent refining. Therefore, large professional sunflower seed oil processing plants are usually equipped with shelling equipment to ensure product quality and production efficiency.
In a word, sunflower seeds generally need to be shelled before oil extraction, which can not only improve the oil yield, but also ensure the quality of sunflower oil. If you are interested in learning more about sunflower seed oil processing, you may wish to visit our sunflower seed oil processing plant and experience the whole process of sunflower seed turning into fragrant vegetable oil.