Olive oil and oxidation: How does shelf life affect its flavor and properties?

Apr 14, 2025
Botella de muestra de aceite de oliva virgen extra de nuestra almazara Aceites Aseal bajo un fondo de aceitunas cosechadas.

At Ad Morum, we consider extra virgin olive oil (EVOO) to be an essential pillar of our gastronomy and culture.

However, it is crucial to understand how the passage of time and oxidation can affect its flavor and properties. In this article, we will explore how expiration affects EVOO and what measures we can take to preserve its quality.

Aceite de oliva virgen extra temprano (AOVE Temprano) Ad-Morum con un fondo de una ensalada.

Does EVOO have an expiration date?

EVOO does not have a strict expiration date; instead, a best-before date is indicated. This means that, although the oil can be consumed after this date without health risks, it is likely to have lost some of its organoleptic characteristics and nutritional benefits.

Oxidation: the main challenge for EVOO

Oxidation is a natural process that occurs when EVOO comes into contact with oxygen, light, and heat. This phenomenon causes the degradation of the beneficial compounds in the oil, negatively affecting its flavor and nutritional value.

Consequences of oxidation in EVOO

EVOO that has undergone oxidation may exhibit:

  • Alteration in flavor and aroma: Development of rancid or vinegary notes that distort its original sensory profile.

  • Loss of healthy properties: Decrease in antioxidants and other beneficial compounds for health.

  • Change in color: Darkening of the oil, indicating possible degradation.

Recommendations for preserving EVOO quality

To keep EVOO in optimal condition, we suggest:

  • Proper storage: Store the oil in a cool, dark place, away from heat sources and direct light.

  • Use of appropriate containers: Prefer dark glass, stainless steel, or ceramic bottles that protect the oil from light.

  • Airtight sealing: Ensure the container is tightly closed to minimize exposure to oxygen.

  • Conscious consumption: Purchase quantities that can be consumed within a reasonable period, avoiding storing oil for prolonged periods.

Aceite de oliva virgen extra aliñando una ensalada de burrata y tomate

Conclusion

At Ad Morum, we deeply value the quality and authenticity of EVOO. Although it does not expire in the traditional sense, oxidation can diminish its qualities. By adopting proper storage practices and being aware of the factors that influence its degradation, we can fully enjoy this "liquid gold" and maximize its benefits in our daily diet.

Leave a comment

Please note, comments need to be approved before they are published.