Author(s): Rietjens, Ivonne M. C. M. ; Pascale, Michelangelo ; Pellegrino, Gloria ; Ribera, Daniel ; Venâncio, Armando ; Wang, Danlei ; Korzeniowski, Konrad
Date: 2025
Persistent ID: https://hdl.handle.net/1822/93714
Origin: RepositóriUM - Universidade do Minho
Subject(s): Risk management; Residues; Food safety; Risk perception; Equivocal
Consumers may be exposed via foods to a diverse range of substances that could be considered as contaminants. However, it is not always straightforward to understand the definition of a contaminant. The present review evaluates how various categories of food-relevant substances are considered in terms of being contaminants. To this end these categories of food borne constituents are evaluated against the various criteria encountered in the available definitions of a food contaminant, including unintentional presence, harmful, existence of regulatory limits, and stakeholder perception. The categories of chemicals considered include: phytotoxins, mycotoxins, (heavy) metals, persistent organic pollutants (POPs), processing aids, process related contaminants, food contact materials (FCMs), pesticides and veterinary drugs. The evaluation revealed that usage of the term appears complex, and may differ between stakeholders. A common proposed definition of the term contaminant could be a substance considered to require control measures due to the unacceptability of its context within a food. Use of a dimension of harm results in equivocal outcomes because risk depends on the level of exposure. As the term contaminant has influence on risk management including public policy, the motivations for applying the term should be subject to more detailed analysis and understanding.
