How do you think the shelf life of edible oil is measured?

Usually, the shelf life of edible oil is 18 months, but this is provided that the package is unopened. The fatty acids in edible oil will undergo chemical changes with longer storage time, and the nutritional value will also decrease.

It is measured according to whether it has deteriorated or not, but the shelf life is not the only criterion for identifying whether a product such as food has deteriorated, and it may be due to the premature deterioration of substances that change in the way they are stored, the environment, etc.

As the name suggests, the shelf life is the time to ensure that the quality of the product reaches the standard state when it leaves the factory. For example, the shelf life of half a year means that the product can reach the quality of the factory within half a year after the production is completed and the packaging begins.

It is very important to buy oil according to the production date, the fresher the better. If you continue to use it after the expiration date, it will have a negative effect on the body.

If after eating, you have diarrhea or feel nauseous, then it is not good, if you eat it and still jump alive. It can be measured in terms of human reactions.

The shelf life is to ensure the taste of food oil and its impact on the human body. Fit for human consumption means within the expiration date, not vice versa.

After consumers buy edible oil at home, once opened, some of the nutrients in the oil will be "close to contact" with the air, and a slow chemical reaction will occur, and then produce substances that are harmful to the human body. It has a shelf life based on the degree of harm to the human body.

Edible oil that has passed its expiration date needs to be judged whether it has been oxidized. Generally, after being oxidized, edible oil has a hala smell, which is generally difficult to judge from the appearance.

Edible oil that has passed the expiration date is not good for the body, and old edible oil can not only make the body smell, but also contain a variety of harmful substances, which should not be taken lightly.

I don't know anything else, peanut oil is more than 3 years.

1. If it is an unopened edible oil in a good storage environment, the shelf life is 18 months.

2. After opening, the edible oil will come into contact with the air, the fatty acids in the oil will change, and the nutritional value will become lower, so the shelf life is shorter than that of unopened edible oil, and it is recommended to consume it within 3 months. Try to store cooking oil in a cool place away from light to avoid deterioration.