2026-04-17T01:01:55Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/3629512026-01-30T08:16:14Zcom_2072_1033col_2072_452950

00925njm 22002777a 4500 dc Babaee, Mehran author Garavand, Farhad author Rehman, Abdur author Jafarazadeh, Shima author Amini, Elahe author Cacciotti, Ilaria author 2022-01-15 This study aimed to develop a plasticized starch (PS) based film loaded with chitosan nanoparticles (CNPs, 1, 2, 3, and 4%) as a reinforcing and antibacterial agent. We examined the morphology, biodegradability, mechanical, thermo-mechanical, and barrier properties of the PS/CNPs films. The antimicrobial activity against both Gram- positive (S. aureus) and Gram-negative (E. coli) bacteria was investigated by colony forming unit (CFU) and disc diffusion methods. A dense structure was obtained for all PS/CNPs films and, thus, their complete biodegradation occurred in more days than neat PS. The increase in the CNPs percentage led to improved mechanical behaviour and barrier properties. PS-CNPs composite films revealed inhibition zones against both E. coli and S. aureus, with the 100% reduction in CFU against S. aureus. The current study exhibited that PS-CNPs films were more effective in inhibiting bacteria growth than neat PS film, confirming the composite films potential application as antimicrobial food packaging Postprint (author's final draft) Àrees temàtiques de la UPC::Enginyeria dels materials Food -- Packaging Nanocomposites (Materials) Starch Starch/chitosan nanocomposites Antimicrobial activity Food packaging Aliments -- Envasament Nanocompòsits (Materials) Midó Biodegradability, physical, mechanical and antimicrobial attributes of starch nanocomposites containing chitosan nanoparticles