Study Finds Impurities in Most Major Avocado Oils

Praised for its light texture, buttery flavor, and health benefits, avocado oil has become a star player in the culinary world in recent years. Despite its reputation, a recent study from the University of California at Davis reveals a troubling truth: not all avocado oils are created equal.

Source: ThomasDelauder/Youtube

In a shocking reveal, 69% of avocado oil samples collected from retailers contained impurities, including cheaper oils such as sunflower, safflower, canola, and soybean oil. Not just that, many samples even showed high oxidation levels, indicating the onset of rancidity. In other words, of the 29 refined avocado oil samples analyzed, only three met the essential quality and purity standards.

This staggering revelation is a wake-up call for consumers relishing avocado oil for its rich oleic acid content, healthy monounsaturated omega-9 fatty acid, and resilience against high cooking temperatures. Moreover, it’s sought after for its antioxidants and vitamins A and E, which may contribute to lowering cholesterol levels and managing high blood pressure.

Associate Professor Selina Wang from UC Davis’ Food Science and Technology Department clarified, “We found that low-cost products indicate a higher probability for adulteration, but high cost didn’t guarantee purity or quality.” This observation shows that price tags can’t guarantee the authenticity of your oil.

However, the issue of food adulteration isn’t exclusive to avocado oil. Other agricultural products, such as honey and olive oil, have faced similar controversies. Notably, the European Union has criticized honey manufacturers from China for “honey laundering”, a term coined for selling honey adulterated with sugary syrups, artificial coloring, and water, sometimes even unsafe heavy metals.

Similarly, olive oil, a long-standing darling of the health-conscious community, has had its share of adulteration scandals. A 2018 investigation disclosed that thousands of tons of low-grade olive oils from Spain and Greece were misrepresented as expensive “extra-virgin Italian” olive oil.

These alarming findings underline the need for stringent quality standards in the food industry, ensuring consumers receive what they pay. Thankfully, researchers like Wang remain optimistic about the future of these industries. She states, “I see avocado oil going [in the direction of improvement], if we can establish fair standards and eliminate fraudulent products.”

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