Can expired olive oil still be consumed

It is generally not recommended to continue consuming olive oil after it has expired, as there may be a risk of oxidation and deterioration. The shelf life of olive oil is generally 18-24 months, and it is recommended to use it within 3-6 months after opening. Olive oil is prone to oxidation reactions after expiration, producing free fatty acids and peroxides. These substances can cause oil to become rancid, resulting in a rancid or bitter taste. The nutritional value of oxidized olive oil is significantly reduced, and vitamin E and polyphenol antioxidants will gradually be lost. Long term storage of olive oil may also breed mold and produce harmful substances such as aflatoxins. If unopened olive oil is stored properly, it may extend its shelf life by 1-2 months in a cool and dark environment. But if there is turbidity, darkening, or abnormal odor, it indicates that it has deteriorated. Partially refined olive oil may experience delayed deterioration due to the addition of antioxidants, but its flavor and nutrition may still be compromised. In special circumstances, a small amount can be used for skin care, but the safety of consumption cannot be guaranteed.

Daily storage of olive oil should avoid direct sunlight and high temperature environments, and seal it promptly after use. It is recommended to choose dark glass bottle packaging when purchasing, and label the date after opening for tracking freshness. If any odor, viscosity or abnormal taste is found in the oil, it should be immediately stopped from use. Reasonably controlling the purchase volume and prioritizing small packaging products can reduce waste.