RT Journal Article T1 Guidance on risk assessment of nanomaterials to be applied in the food and feed chain: human and animal health. A1 EFSA Scientific Committee, A1 More, Simon A1 Bampidis, Vasileios A1 Benford, Diane A1 Bragard, Claude A1 Halldorsson, Thorhallur A1 Hernández-Jerez, Antonio A1 Hougaard Bennekou, Susanne A1 Koutsoumanis, Kostas A1 Lambré, Claude A1 Machera, Kyriaki A1 Naegeli, Hanspeter A1 Nielsen, Søren A1 Schlatter, Josef A1 Schrenk, Dieter A1 Silano Deceased, Vittorio A1 Turck, Dominique A1 Younes, Maged A1 Castenmiller, Jacqueline A1 Chaudhry, Qasim A1 Cubadda, Francesco A1 Franz, Roland A1 Gott, David A1 Mast, Jan A1 Mortensen, Alicja A1 Oomen, Agnes G A1 Weigel, Stefan A1 Barthelemy, Eric A1 Rincon, Ana A1 Tarazona, José A1 Schoonjans, Reinhilde K1 dietary exposure K1 nanoparticle K1 nanotoxicology K1 physico‐chemical characterisation K1 safety assessment K1 testing strategy AB The EFSA has updated the Guidance on risk assessment of the application of nanoscience and nanotechnologies in the food and feed chain, human and animal health. It covers the application areas within EFSA's remit, including novel foods, food contact materials, food/feed additives and pesticides. The updated guidance, now Scientific Committee Guidance on nano risk assessment (SC Guidance on Nano-RA), has taken account of relevant scientific studies that provide insights to physico-chemical properties, exposure assessment and hazard characterisation of nanomaterials and areas of applicability. Together with the accompanying Guidance on Technical requirements for regulated food and feed product applications to establish the presence of small particles including nanoparticles (Guidance on Particle-TR), the SC Guidance on Nano-RA specifically elaborates on physico-chemical characterisation, key parameters that should be measured, methods and techniques that can be used for characterisation of nanomaterials and their determination in complex matrices. The SC Guidance on Nano-RA also details aspects relating to exposure assessment and hazard identification and characterisation. In particular, nanospecific considerations relating to in vitro/in vivo toxicological studies are discussed and a tiered framework for toxicological testing is outlined. Furthermore, in vitro degradation, toxicokinetics, genotoxicity, local and systemic toxicity as well as general issues relating to testing of nanomaterials are described. Depending on the initial tier results, additional studies may be needed to investigate reproductive and developmental toxicity, chronic toxicity and carcinogenicity, immunotoxicity and allergenicity, neurotoxicity, effects on gut microbiome and endocrine activity. The possible use of read-across to fill data gaps as well as the potential use of integrated testing strategies and the knowledge of modes or mechanisms of action are also discussed. The Guidance proposes approaches to risk characterisation and uncertainty analysis. YR 2021 FD 2021-08-03 LK https://hdl.handle.net/10668/26740 UL https://hdl.handle.net/10668/26740 LA en DS RISalud RD Apr 8, 2025