Study reveals pesticide contamination in extra virgin olive oil
A recent study conducted by the University of Messina, Italy, has raised concerns about the safety of extra virgin olive oil, revealing that more than one-third of samples tested contained pesticide residues exceeding European Union (EU) limits.
The researchers scrutinized 50 samples, 23 from Italy and 27 from other European nations, covering production years from 2021 to 2023. This selection was made to ensure a comprehensive representation of the olive oil market across different regions and vintages. The study found that 21 of the samples tested positive for pesticide levels above the permissible limits set by EU regulations.
Among the samples, the researchers found that oils sourced from organic farming practices performed significantly better, with six Italian organic samples that showed no detectable pesticide residues.
To conduct this analysis, the team developed two methods utilizing both liquid and gas chromatography. This approach allowed for the monitoring of up to 260 different pesticides, surpassing the EU's requirement to check for 185. The researchers stated that these methods not only enhance the thoroughness of the testing but also promote sustainability, reducing the need for organic solvents during sample preparation.
The findings regarding pesticide exposure are particularly alarming for vulnerable populations, especially children. The study revealed that in 2021, 8 out of 13 samples contained at least one pesticide residue, which increased to 10 out of 16 in 2022. However, by 2023, the situation improved, with only 3 out of 21 samples showing contamination.
The researchers expressed concern over the chronic exposure of children to certain pesticides, notably cypermethrin and a combination of endosulfan compounds, which exceeded the Acceptable Daily Intake (ADI) for children, particularly in Italy and Spain, where olive oil consumption is notably high. Fortunately, other demographic groups, including adults, the elderly, and pregnant or breastfeeding women, did not exceed the ADI levels.
These findings underscore the need for increased vigilance and regulation in the olive oil industry to ensure consumer safety.
Source:
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