On September 15, 2020, the European Food Safety Authority (EFSA) called for grant proposals on the use of new approach methodologies (NAM) for the hazard assessment of cellulose nanofibers.  EFSA states that the use of cellulose at the nanoscale is increasing and requires an assessment.  According to EFSA, the main concern is that the nanoscale

The International Organization for Standardization (ISO) has published standard ISO/TS 20477:2017, “Nanotechnologies — Standard terms and their definition for cellulose nanomaterial.”  The standard states that in industrial productions, cellulose nanomaterials can be manufactured by conversion of wood pulp through chemical, biological, or mechanical processes.  Due to their renewable nature and unique properties, cellulose