Home > FAQ Which crude edible oil can be refined by cooking oil refining machine? What are the refining steps of edible oil?
To improve crude edible oil stability, quality and market value, now more and more edible oil processing plants choose to adopt cooking oil refining machine to refine the crude edible oil. There are so many kinds of crude edible oil in the market, and most of these crude oils can be refined by the cooking oil refining machine manufactured by Henan Glory Company, and the refining effect is very great.
And the commonly available crude edible oil can be refined by cooking oil refining machine includes soybean oil, peanut oil, sunflower oil, palm oil, olive oil, sesame oil, rapeseed oil, walnut oil, corn germ oil, linseed oil, castor oil, safflower oil, rice bran oil, lard oil and so on. And the detailed steps of edible oil generally includes four steps: degumming, deacidification, decolorization, and deodorization.
The cooking oil refining machine prototype in our factory
Step one:
Degumming is the removal of phospholipids in crude edible oil. These impurities will not only damage the stability of oil storage, but also affect subsequent refining steps, so they are removed first.
Step two:
Unrefined crude edible oil contains free fatty acids, which will make the oil easily rancid, so it needs to be deacidified to remove free fatty acids. Add alkali (sodium hydroxide NaOH) to produce soapstock through the saponification reaction to remove acidic substances in the oil. The soapstock will also absorb other suspended impurities and remove them.
Step three:
Add activated clay or activated carbon for decolorization to absorb and remove the pigments in the oil. One can make the oil sell in line with consumers’ preferences, and the other can extend the shelf life of oil products.
Step four:
Deodorization uses low-pressure vacuum heating and hot steam to remove odor molecules in oil to achieve deodorization effect.
After these four steps, you can get high quality standard edible oil. If you are interested in refining crude edible oil to make high profits, you can contact Henan Glory Company at any time. Our sales manager and engineer team can customize you the best batch type/semi-continuous type/full continuous type cooking oil refining machine at factory price.
