Sunflower seed oil is a common vegetable oil in our daily life, and its production process is divided into several steps, among which prepressing is a very important link. So, why does sunflower seed oil need to be prepressed first? The following will be explained from two aspects: technology and quality.

First of all, from the technological point of view, sunflower seeds contain high oil content, but also contain a certain amount of cellulose and other impurities. Direct full pressing will easily lead to heavy equipment burden and affect oil production efficiency. By prepressing, a part of the oil in sunflower seeds can be extracted first, which reduces the pressure of the subsequent process and improves the overall production efficiency. In addition, the oil content of the prepressed sunflower seed cake is lower, which is more suitable for the subsequent solvent extraction process, thus achieving higher oil yield.

Secondly, from the quality point of view, prepressing can effectively protect the nutritional components and flavor of sunflower seed oil. In the process of prepressing, because the temperature and pressure are relatively low, the damage of high temperature to oil quality can be avoided and the occurrence of oxidation reaction can be reduced. This gentle treatment is helpful to maintain the natural vitamin E, linoleic acid and other beneficial components in sunflower seed oil, while retaining its unique fragrance taste.

Finally, prepressing also helps to reduce production costs. By extracting oil in stages, energy consumption and equipment wear can be reduced, thus reducing the overall production cost. This is also one of the reasons why prepressing technology is widely used in modern sunflower seed oil production technology.

To sum up, sunflower seed oil needs to be prepressed first because it can improve oil production efficiency, protect oil quality and reduce the production cost. This technological step not only embodies the rationality of technology, but also ensures the high quality of sunflower oil we use every day.