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Discriminating organic and conventional foods by analysis of their microbial ecology: An application on fruits

Bigot C., Meile J.C., Kapitan Gnimdu A., Montet D.. 2015. Food Control, 48 : p. 123-129.

Traceability of foods is mainly done at the administrative level, and the use of analytical tools is rare. Previous studies have demonstrated that microbial ecology analyses at the molecular level (such as PCR-DGGE) could be used to provide food with a unique biological signature that could be linked to the geographical origin of food. The present study aimed at testing this approach to differentiate farming types by analyzing organic and conventional food products. To this end, the microbial ecology of organic and conventional nectarines was analyzed and statistically compared. Our results show that yeast and bacterial communities were specific of the farming type allowing organic fruits to be discriminated from conventional ones. Several microbial species were identified as potential, biological markers which detection could be used to certify the origin as well as the mode of production of foodstuff. We proposed this analytical tool as a first step to control and authentify organic foods. (Résumé d'auteur)

Mots-clés : qualité; fruits; Étude de cas; levure; Électrophorèse sur gel; biologie moléculaire; pcr; analyse qualitative; traçabilité alimentaire; flore microbienne; Écologie microbienne; organisme indicateur; aliment biologique pour homme; produit alimentaire; france

Thématique : Traitement et conservation des produits alimentaires; Méthodes de relevé; Contamination et toxicologie alimentaires; Commerce, commercialisation et distribution

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