The shelf life of walnut oil is very short if it is not refined by refining equipment after being pressed by full-automatic oil press

The shelf life of walnut oil is very short if it is not refined by refining equipment after being pressed by full-automatic oil press. If exposed to air, it will oxidize rapidly in only two or three days, resulting in excessive peracid value, which is what we call deterioration. Many people know that this will happen, but they don't know what caused it. What is the difference between walnut oil and other oils? That is, walnut oil is an oil crop without antioxidant value. It can be preserved for a period of time before shell breaking (it can be preserved after dehydration, but the acid value will increase). But some will also have a Harrah smell. After being pressed by the full-automatic oil press, it will oxidize rapidly in contact with the air. After being squeezed out, it can be sealed and stored for three months, or on the premise that it cannot be opened in the middle. The solution is that after being squeezed out by the full-automatic oil press, refining treatment should be carried out to remove phospholipids and acid value. Only after vacuum drying and dehydration can it be stored for a long time.