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Organic production and interpretation of results in analytical laboratory

The aim of this work was to present different EU guidelines and legal regulations in the interpretation of residues in organic food. The use of pesticides is limited in organic production. Only a few natural substances have been authorised according to Regulation (EC) No 889/2008. Synthetic pesticides, which make up the largest share, are banned. Pesticide residues in the food may indicate deliberate use on the part of producer or the food processor (intentionally mixing food from a different method of production). The important control tool is pesticide residue analysis in the analytical laboratory. They are carried out in conventional as well as in organic foods. Existing EU legislation for organic food gives very little guidance with regard to the handling of pesticide residues and especially interpretation results in the analytical laboratory. What is the maximum residue level (MRL) in analyses of pesticide residues in organic food, and what about positive analyte exceptions? Can we use measurement uncertainty in the interpretation of results? There are different opinions between experts regarding this problem. In the absence of official guidances from the EU, organic food processors, merchants, as well as the certification body and authority relied on inofficial guidance of their own design. In the EU, there are several guidances from the German Organic Processors and Traders Association (BNN), Bio Suisse, International Federation of Organic Agriculture Movements (IFOAM), European Organic Certifiers Council (EOCC), etc. It is crucial that in the period until the EU official guide for the interpretation of the analytical results is provided, the opinion of experts be harmonised and a national guide created.

ER regulation ; maximum residue level (MRL) ; measurement uncertinty ; pesticide residues

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