1. Flavor and Extract Manufacturers Association(2017).GRAS 28 flavoring substances. Available from:https://www.femaflavor.org/sites/default/files/2017‐10/fema_gras_28_20171025.pdf.
2. Scientific opinion flavouring group evaluations 86, (FGE.86)1 consideration of aliphatic and aromatic amines and amides evaluated by JECFA (65th meeting) scientific opinion of the panel on food additives, flavourings, processing aids and materials in contact with food (question no EFSA‐Q‐2008‐70) adopted on 22 May 2008;European Food Safety Authority;The EFSA Journal,2008
3. European Chemicals Bureau(2003).European Union Risk Assessment Report. 1‐Vinyl‐2‐Pyrrolidone CAS No: 88‐12‐0 EINECS No: 201‐800‐4. Available from:https://echa.europa.eu/documents/10162/1ebf6d5f‐e907‐4ca2‐a3b4‐909fd5f359d1.
4. European Chemicals Agency(2018).Registered Substances: 2‐pyrrolidone; EC number: 210‐483‐1 | CAS number: 616‐45‐5. Available from:https://echa.europa.eu/registration‐dossier/‐/registered‐dossier/14900.
5. European Chemicals Agency(2018).Registered Substances: 1‐methyl‐2‐pyrrolidone EC number: 212‐828‐1 | CAS number: 872‐50‐4. Available from:https://echa.europa.eu/registration‐dossier/‐/registered‐dossier/15493.