Even if you remove most air from olive oil, some healthy compounds still break down—but if air gets in occasionally, they break down even more.

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Evidence from Studies

Supporting (1)

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Insight into the Storage-Related Oxidative/Hydrolytic Degradation of Olive Oil Secoiridoids by Liquid Chromatography and High-Resolution Fourier Transform Mass Spectrometry

Cross-Sectional Study

In Vitro

2020 Nov 4

Even if you remove air from the olive oil bottle and fill it with nitrogen, some damage still happens to the healthy compounds—but it’s much worse when the bottle is opened and exposed to air repeatedly.

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No contradicting evidence found

Source Study

Insight into the Storage-Related Oxidative/Hydrolytic Degradation of Olive Oil Secoiridoids by Liquid Chromatography and High-Resolution Fourier Transform Mass Spectrometry

Score: 4

DOI: 10.1021/acs.jafc.0c04925

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