OICC Press Journal of Nanostructure in Chemistry 2193-8865 14 2 2023 02 26 Green synthesis of nanomaterials for smart biopolymer packaging: challenges and outlooks 10.1007/s40097-023-00527-3 EN Shima Jafarzadeh School of Civil and Mechanical Engineering, Curtin University, Bentley, WA, AU Majid Nooshkam Department of Food Science and Technology, Faculty of Agriculture, Ferdowsi University of Mashhad (FUM), Mashhad, IR Masoumeh Zargar School of Engineering, Edith Cowan University, Joondalup, WA, AU Farhad Garavand Department of Food Chemistry and Technology, Teagasc Moorepark Food Research Centre, Fermoy, Co. Cork, IE Sabyasachi Ghosh Department of Biochemistry and Biophysics, University of Kalyani, Nadia, West Bengal, 741235, IN Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Nadia, West Bengal, 741252, IN Milad Hadidi Department of Organic Chemistry, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Ciudad Real, ES Mehrdad Forough Department of Chemistry, Middle East B Technical University, Çankaya, Ankara, 06800, TR Journal Article 2023 02 26 Abstract There are several physical and chemical methods for synthesizing nanomaterials, while the most appropriate techniques involve using green chemistry and eco-friendly material. Recently, green synthesized materials for different applications have gained attention as a result of their environmental friendliness and cost-effectiveness. Applying green synthesized nanoparticles (NPS) in food packaging has been extensively investigated. Biopolymers require filler to enhance the optical, barrier, thermal, antimicrobial, and mechanical properties of packaging. Biopolymer packaging incorporated with green synthesized NPs is expected to simultaneously enhance performance while reducing environmental damage. The current review article focuses on biopolymer films with bio (green)-synthesized nanomaterials and their effectiveness in reducing the negative environmental implications of synthetic packaging. It also covers the general concepts of green synthesis of NPs, their production methods, their performance, and characterization, and discusses the potential, performance and recent developments of bio-nanocomposite films/coatings in biodegradable food packaging. Recent reports and trends provide more insight into the impact of green synthesized nanomaterials on food packaging. Graphical Abstract