Will rapeseed oil go bad if it is left for a long time? What are the reasons for rapeseed oil going bad?

Rapeseed oil, also known as rapeseed oil, is the most commonly consumed edible oil in people's lives, but some people don't know much about the shelf life of rapeseed oil. In particular, they want to know whether rapeseed oil will go bad after being stored for a long time. The answer to this question is yes, rapeseed oil will definitely go bad after being stored for a long time. As for the specific reasons, you can see the detailed introduction of the editor below.

Will vegetable oil go bad if left for a long time?

1. Vegetable oil will go bad if left for a long time

Rapeseed oil will deteriorate after being stored for a long time. The most obvious sign of deterioration is the appearance of a pungent odor. At this time, a large amount of carcinogenic ingredients will appear in the rapeseed oil. If people continue to consume it, it will lead to a high incidence of cancer, and sometimes various adverse symptoms such as dizziness and weakness will occur.

2. Storage time of vegetable oil

After purchasing rapeseed oil, there will usually be a production date and shelf life mark on the outer packaging, which is usually about one and a half years. After the shelf life has expired, it is recommended that you do not continue to consume it. In addition, after purchasing rapeseed oil, you must also pay attention to its storage environment. It cannot be exposed to the sun or placed in a high temperature environment. Only when it is stored in a cool and ventilated condition can it be guaranteed that the rapeseed oil will not deteriorate within the shelf life.

3. Reasons for rapeseed oil deterioration

Rapeseed oil will deteriorate after being stored for a period of time, which has a lot to do with the acetylase it contains. Under certain moisture and temperature conditions, the activity of this substance will increase, causing the rapeseed oil to decompose and produce a large amount of free fatty acids. When the content of free fatty acids exceeds one percent, the properties of the rapeseed oil will change and an odor will appear. These situations are obvious manifestations of rapeseed oil deterioration.