Hui Zheng^1,2, Xiaohan Chen², Li Li², Dawei Qi¹, Jiale Wang¹, Jiaying Lou^1,*, Wenjun Wang^1,*

Journal of Renewable Materials, Vol.11, No.10, pp. 3693-3709, 2023, DOI:10.32604/jrm.2023.027748

Abstract The issue of plastic pollution has attracted widespread social attention. Gelatin is valued as a degradable bio-based material, especially as an edible active packaging material. However, the commonly used solution-casting filmforming technology limits the mass production of gelatin films. In order to improve the production efficiency and enhance the commercial value of gelatin films, in this study, fish gelatin (FG) particles were successfully blended with essential oils (EOs) to prepare active films by melt extrusion technique, a common method for commercial plastics, and applied to bread preservation. FG and EOs showed good compatibility with each other. The elongation at break… More > Graphic Abstract

Norma M. P. Machado¹, Gustavo C. Melo¹, Matheus F. Camargo¹, Giulianna G. Feijó¹, Bruna M. S. Putton², Clarice Steffens², Rogerio L. Cansian², Luiz A. Pessan¹, Francys K. V. Moreira^1,*

Journal of Renewable Materials, Vol.9, No.2, pp. 337-349, 2021, DOI:10.32604/jrm.2021.011081

Abstract Food packaging materials compounded with antimicrobial additives can substantially diminish the incidence of foodborne diseases. Here, poly(L-lactic acid) (PLA) films containing sodium metabisulfite (NaM) were produced by melt extrusion as an attempt to develop a new biodegradable material with antimicrobial properties for packaging. Life cycle assessment (LCA) simulations revealed that the environmental footprints of the PLA film did not change upon NaM addition, and that NaM is more eco-friendly than silver nanoparticles. The PLA/NaM films with NaM content varying from 0.5 to 5.0 wt.% were characterized by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and optical and mechanical properties determinations.… More >