Fully Biodegradable Packaging Films for Fresh Food Storage Based on Oil‐Infused Bacterial Cellulose

Author:

Chen Guoli1ORCID,Wang Kaimin1,Chen Pinghang1,Cai Daohang1,Shao Yan1,Xia Rui1,Li Chun1,Wang Haochuan1,Ren Fuzeng1,Cheng Xing1,Yu Yanhao12ORCID

Affiliation:

1. Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen 518055 China

2. Institute of Innovative Materials Southern University of Science and Technology Shenzhen 518055 China

Abstract

AbstractFully biodegradable packaging materials are demanded to resolve the issue of plastic pollution. However, the fresh food storage performance of biodegradable materials is generally much lower than that of plastics due to their high permeability, microbial friendliness, and limited stretchability and transparency. Here a biodegradable packaging material is reported with high fresh food storage performance based on an oil‐infused bacterial cellulose (OBC) porous film. The oil infusion significantly improved cellulose's food‐keeping performance by reducing its gas permeability, increasing its stretchability and transparency, and enabling the active release of green vapor‐phase preservative molecules, while maintaining its intrinsically high degradability. Strawberries stored in a container with the OBC lid at 23 °C after 5 days exhibited a moldy rate of 0%, in contrast to the 100% moldy rate of those stored by poly(ethylene). Enhanced storage performance is also obtained on tomatoes, pork, and shrimp. The OBC film is naturally degraded after being buried in wet soil at 30 °C for 9 days, identical to the degradation rate of bacterial cellulose. The liquid seal strategy broadly applies to different celluloses, providing a general option for developing cellulose‐based biodegradable packaging materials.

Funder

National Natural Science Foundation of China

Shenzhen Science and Technology Innovation Program

Publisher

Wiley

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