Don't eat olive oil when it's expired. Olive oil can be preserved for several years after sealing, but once it is opened, it must be eaten within the shelf life, because edible oil is easy to deteriorate, so don't eat it for health.

After the edible oil deteriorates, the oil will automatically oxidize. A large number of toxic oxidative decomposition substances will be produced after oil oxidation, and the formation of peroxide will cause rancidity and produce unpleasant smell. The rancidity of oil is not as easy to attract people's attention as the corruption and mildew of food. When we smell the peculiar smell, the hydrogen peroxide content of engine oil has greatly exceeded the national standard value. So for health, don't use expired olive oil.

Extended data:

Harm of edible spoiled edible oil;

Cooking oil stored for a long time may lead to rancidity of oil. After the edible oil goes bad, the most obvious feature is its spicy taste. This is the result of oxidative rancidity of oil. After oil rancidity, it smokes when heated, and contains decomposition products such as epoxypropanal. It is easy to be poisoned after eating, especially for the gastrointestinal tract, that is, nausea, vomiting, abdominal pain, diarrhea and so on occur one after another after eating.

The nutritional value of oil is reduced after oxidation, which destroys unsaturated fatty acids. Long-term consumption will also promote human aging, and even increase the risk of chronic diseases because of the production of a large number of free radicals.

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