The temporal variation in pesticide concentrations within matured French wines

Area of Science:

• Food Science
• Environmental Chemistry
• Toxicology

Background:

• Global food safety regulations increasingly focus on pesticide residues.
• The long-term stability and potential health risks of pesticides in aged products like wine are not fully understood.
• Plant Protection Products (PPPs) are subject to ongoing regulatory review and bans.

Purpose of the Study:

• To investigate the presence and levels of pesticides in aged French wines.
• To determine if banned pesticides persist in wine over decades.
• To assess potential health risks associated with pesticide residues in aged wine.

Main Methods:

• Collection of French wine samples spanning from 1935 to 2000.
• Gas chromatography-mass spectrometry (GC-MS) or liquid chromatography-mass spectrometry (LC-MS) for pesticide identification and quantification.
• Risk assessment based on detected pesticide levels and typical daily consumption.

Main Results:

• Trace amounts of 21 different pesticides from Plant Protection Products (PPPs) were detected in most aged wine samples.
• Detected pesticide levels were generally considered non-threatening to human health.
• One wine sample showed a significantly high concentration of carbaryl, exceeding toxicological thresholds.

Conclusions:

• Aged wines can contain persistent pesticide residues, though typically at safe levels.
• The presence of carbaryl in one sample highlights potential risks and the need for continued monitoring.
• The findings support discussions on prioritizing pesticide testing in collectible goods and enforcing regulations in the wine trade.