Strawberries
have been consistently within the top 10 pesticide
residue-containing commodities in the last years. In this work, the
safety of ready-to-eat strawberries in terms of pesticide residues
was evaluated throughout its shelf life. The effect of conventional
minimal processing operations (washing, calyx removal, and disinfection)
and of modified atmosphere packaging (MAP) on the pesticide residue
content and its evolution throughout the shelf life was investigated.
Different pesticides, using a validated multiresidue method, in concentration
levels between 0.014 ± 0.007 and 1.78 ± 0.008 mg kg–1 were found in commercial strawberries right after
harvest. Fruit calyx removal, washing, and disinfection contributed
to improvement of the product safety because the pesticide residue
concentration decreased up to 80% of the original value. No influence
of the atmosphere on the pesticide concentration was observed. Minimal
processing and MAP contributed to the chemical safety of strawberries
in terms of pesticide residues, reducing the residue concentration
by more than 80%, while allowing shelf life extension.