4 years ago



58 dialogues with

58 dialogues with different stakeholders are important and the CIAA has so far organised three stakeholder meetings. The EU plays a key role both in furthering innovation and commercial development in this field and in setting a common regulatory framework that gives the required safety assurances to consumers and stakeholders. The definition of nanotechnology should distinguish between the natural occurrence of nanoparticles, their presence through conventional processing techniques, and instances where the particle size has been deliberately engineered to behave differently to its conventional counterpart. A workable EUlevel definition will be an important step forward. Moreover, the benefits, uncertainties and actions being taken to address uncertainties about nano should be made clear to consumers. In the food sector, potential and actual nanotechnology applications may reduce the environmental impact of food packaging and may improve food safety. However, cost to food manufacturers and perceived consumer benefits are central to the uptake of potential applications. A better understanding of public attitudes towards nanotechnology and other new food technologies is needed - both to determine which applications will be acceptable and to communicate effectively with consumers and other key stakeholders about these applications’ potential benefits. References _______________________________________________ FOE- Friends of the Earth. 2008. Out of the laboratory and onto our plates - Nanotechnology in food & agriculture. March 2008, pp. 68.

THEME 3: TOXICOLOGICAL ASPECTS OF NANOTECHNOLOGY IN THE FOOD CHAIN Toxicodynamic aspects of nanoparticles in food: interactions with the intestinal barrier Yves-Jacques Schneider 1 , Alexandra Bazes 1 , Anne Brasseur 1, 2 , Jorina Geys 2 , Jan Mast 2 & Luc Pussemier 2 1 Institut des Sciences de la Vie & UCLouvain, Croix du Sud 5/3, B 1348 Louvain-la-Neuve, Belgium 2 CODA-CERVA, Veterinary and Agrochemical Research Centre, Groeselenberg 99, B-1180 Brussels, Belgium E-mail: Introduction Nanomaterials are not yet officially defined, but widely described as discrete entities in the order of 100 nm or less (Bouwmeester et al., 2009; SCENIHR, 2007; Kreyling et al., 2006) in one (e.g. films), two (e.g. fibers and tubes) or three (e.g. particles) dimensions. Nanoparticles (NPs) are used in a wide range of applications in science, technology and medicine. For instance, our group has shown their interest in drug and mucosal vaccine delivery (des Rieux et al., 2006). In human food and animal feed, nanotechnologies can concern materials in contact with food, antimicrobial agents, biosensors, ingredients, aroma, texturing agents, … Most of the current approaches still remain research projects, but recent developments have led to the commercialisation of some products containing NPs (AFSSA, 2009). The lack of data required to evaluate the risks associated with NPs “naturally” present in or added to food and feed, makes it urgent to develop accurate toxicity studies. 59

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