Edible oil refining equipment can remove many impurities during processing, thus improving the quality of edible oil and ensuring its safety and applicability. The following are several kinds of impurities commonly removed in the refining process of edible oil:

Firstly, edible oil refining equipment can remove mechanical impurities from raw materials. These impurities usually include sediment, plant fibers and other solid particles. These substances may not be completely removed in the initial processing stage of oil. Through the filtration and separation process in refining equipment, these insoluble impurities can be further removed to ensure the purity of oil.

Secondly, refining equipment can effectively remove colloids and phospholipids from oil. Colloids and phospholipids will affect the stability and appearance of edible oil, resulting in precipitation or turbidity of oil during storage. Through degumming process, these components can be separated, making the oil more clear and transparent.

Thirdly, acidic substances and free fatty acids are also one of the important impurities that need to be removed. Free fatty acids will have adverse effects on the taste and quality of edible oil, and may also cause potential harm to human health. Refining equipment can reduce the acid value of oil by neutralization reaction or other chemical treatment methods, making it more suitable for eating.

Fourthly, pigments and odor substances in edible oil can also be removed by refining equipment. For example, some vegetable oils may contain natural pigments or produce odor during processing, which need to be treated by decoloration and deodorization to improve the sensory quality of edible oil.

Moreover, moisture is one of the important factors affecting the quality of edible oil. Oil will inevitably be mixed with water in the refining process. If water cannot be removed, it will reduce the quality of oil and accelerate the rancidity of oil, which is not conducive to safe storage. Edible oil refining equipment will vacuum dry the oil to remove water before decoloration, and also take into account the dehydration process in the subsequent decoloration and deodorization processes to ensure the purity of the oil.

Finally, refining equipment can also remove heavy metals, residual pesticides and other trace harmful substances. These pollutants may come from the planting environment or processing process of raw materials. Through the advanced treatment in the refining process, the content of these harmful components can be minimized to ensure that edible oil meets food safety standards.

Generally speaking, edible oil refining equipment can remove a variety of impurities and trace harmful substances during processing, and provide consumers with high-quality, safe and reliable edible oil products. These refining processes not only enhance the market competitiveness of edible oil, but also provide an important guarantee for a healthy diet.