What is the purpose of cooking oil refining? What's the refining steps of cooking oil?

Normally the crude edible oil that obtained from cooking oil pressing plant or cooking oil solvent extraction plant contains some impurities , like: suspended impurity, colloidal impurity, oil soluble impurity and water. The existence of these impurities will make the crude cooking oil has a bad smell and a short storage time. In order to get high quality cooking oil, we usually need to use cooking oil refining machine to refine the crude cooking oil.

Small scale cooking oil refining machine

From crude cooking oil to edible oil usually need to go through four basic processes, they are: degumming process, deacidification process, decolorization process and deodorization process. Next I will introduce you how to refine crude cooking oil to edible oil.

Chemical refining process of edible oil and physical refining process of edible oil

Step one——Degumming

Using hot water to remove the gums, then settling 6-8 hours, we can remove the gums;

Step two——Deacidification/ Neutralization

Using alkali to neutralize with acid and remove the soapstock or using high temperature to remove acid;

Step three——Decolorization/ Bleaching

Adding white clay to absorb the color away, and the white clay adding quantity depends on your crude cooking oil color;

Step four——Deodorization:

Using steam to take odors away.

The above is the brief introduction to the refining process of cooking oil, if you want to get more detailed information about cooking oil refining machine, welcome to contact Henan Glory Company.