Generally speaking, the shelf life of peanut oil is 18 months, and unopened peanut oil can be kept for 2 years. The oxidized peanut oil is fast, and it is best to use it up in 4-9 months.

Peanut oil is a fatty oil squeezed from the seeds of leguminous plant peanut. Peanut oil is an easily digestible edible oil. Peanut oil contains more than 8% unsaturated fatty acids. In addition, it also contains 19 and 9% saturated fatty acids such as palmitic acid, stearic acid and arachidic acid.