Sunflower oil is one of the common edible oils in people’s daily life, and its processing involves many links, among which shelling is an important step. So, why shelling is needed in sunflower oil processing? The following is analyzed from several aspects.

First of all, shelling can improve the oil yield. Sunflower seeds are hard and contain no oil. If they are pressed directly without shelling, it will occupy the capacity of processing equipment and increase energy consumption and production cost. After hulling, only the seeds rich in oil are pressed, which can significantly improve the processing efficiency, reduce the production cost and reduce the waste of resources.

Secondly, shelling can significantly improve the quality of oil. The sunflower shell contains a small amount of plant wax, more cellulose and impurities. If pressed with shell on, these substances will be mixed into oil, which will affect the purity of oil. In addition, pressing with the shell on will affect the protein content of the cake, thereby reducing the utilization value of the cake. However, the purity of sunflower oil processed after shelling is higher, and the protein content in cake is more stable, which can better meet the related needs.

Furthermore, shelling can effectively protect the processing equipment. Sunflower shell is hard, so direct pressing with shell on may cause wear and tear to the equipment and increase the maintenance cost of the equipment. Processing after shelling can reduce the wear and tear of the equipment and improve the service life of the equipment.

Finally, the shelled shell also has certain use value. The sunflower seed shell can be used as feed, fertilizer or fuel to realize comprehensive utilization of resources and reduce waste. This not only improves the economic benefits, but also meets the requirements of environmental protection.

To sum up, shelling treatment in sunflower oil processing can not only improve oil yield and oil quality, but also protect equipment and make full use of shell resources. This technology is of great significance for improving the economic benefit and product quality of sunflower oil.