In Situ Fermentation of an Ultra-Strong, Microplastic-Free, and Biodegradable Multilayer Bacterial Cellulose Film for Food Packaging

• DOI: 10.1021/acsami.3c10563
• Publication Date: 2023-09-12T05:07:16Z
• Authors: Yibing Zhang; Guoqiang Chen; Wenhao Qin; Xiao Men; Lijuan Liu; Yashu Zhang; Qingtao Li; Lei Wang; Haibo Zhang
• Keywords: Bacterial Cellulose; Active packaging; Environmentally Friendly

Cellulose-based food packaging has a significant importance in reducing plastic pollution and also ensuring our safety from microplastics. Nonetheless, lignocellulose necessitates sophisticated physical chemical treatments to be fashioned into satisfactory packaging, thus leading extra consumption operations. Here, we present gel-assisted biosynthesis approach for the situ production of bacterial cellulose (BC) that can directly applied packaging. Komagataeibacter sucrofermentans is homogeneously distributed gellan gum (GG)-assisted culture system, BC/GG film with an even surface attained. Then, integrated antibacterial layer containing quaternary ammonium chitosan microsphere (QM) through spray method. The resulting BC/GG/QM multilayer combines barrier properties activity. method green, efficient, convenient endow excellent capacity (1.76 g·mm·m-2·d-1·KPa-1 at RH 75%), high mechanical (strength 462 MPa), activity (>90% against Escherichia coli O157:H7 Staphylococcus aureus). In terms preservation, overall performance better than commercial petroleum-based lignocellulose-derived film. This work proffers novel strategy produce more beneficial eco-friendly via biosynthesis, which manifests great utility field