From crude peanut oil to standard edible oil needs to go through four basic stages of degumming, depickling, decolorization and deodorization.
Step1. Degumming
In this step, we add hot water to dissolve colloidal impurities in crude peanut oil to remove excess phospholipids and make the color more vivid and obtain purer peanut oil;
Step 2. depickling
Due to the crude oil after degumming still contains excessive free fatty ecids , so we need to add alkali to deecidify, let out the soap stock after settling and obtain ecid-base neutralized refined peanut oil;
Step3. Decolorization
Then, we add white clay as an adsorbent to remove pigment in the crude oil and filter with a leaf filter after full reaction to improve the color of the oil and to obtain refined bleached peanut oil.
Step4. Deodorization
Finally, the odor and part of free fatty ecid in crude peanut oil were removed by distillation to improve the quality of the peanut oil further and obtain edible oil. After this series of processing, we will finally get edible peanut oil.
Maybe you have a general understanding about the peanut oil refining process, if you have more questions, welcome to consult us. Henan Glory Oils & Fats Engineering Co., Ltd will guide you to refining crude peanut oil step by step.
