Gaining control of bacterial cellulose colonization by polyhydroxyalkanoate-producing microorganisms to develop bioplasticized ultrathin films

被引：5

作者：

Campano C. ^{[1
]}

Rivero-Buceta V. ^{[1
]}

Fabra M.J. ^{[2
]}

Prieto M.A. ^{[1
]}

机构：

[1] Polymer Biotechnology Group, Biological Research Centre Margarita Salas, Spanish National Research Council (CIB-CSIC), Madrid

[2] Food Safety and Preservation Department, Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia

来源：

International Journal of Biological Macromolecules | 2022年 / 223卷

基金：

欧盟地平线“2020”;

关键词：

Bacterial cellulose; Controlled colonization; High barrier properties; Polyhydroxyalkanoates; Pseudomonas putida; Ultrathin films;

D O I：

10.1016/j.ijbiomac.2022.11.120

中图分类号：

学科分类号：

摘要：

Synergistic methodological strategies based on the fields of microbial biotechnology and materials science open up an enormous range of possibilities for the sustainable production of advanced materials with predictable properties. This study shows how naturally produced polyhydroxyalkanoate (PHA) particles are introduced into bacterial cellulose (BC) driven by their bacterial producers. Thanks to an extensive knowledge of the internal structure of BC, it was possible to control the colonization process, i.e. loading and localization of PHA. A subsequent acid treatment favored the PHA-BC bonding at the position reached by the bacteria. These biodegradable films showed improved mechanical and barrier properties even with respect to reference plastic films 8 times thicker, reaching a Young's modulus 4.25 times higher and an oxygen permeability 3 times lower than those of polyethylene terephthalate (PET) films. Owing to the versatility of the method, a wide variety of materials can be developed for very diverse fields of application. © 2022 The Authors

引用

页码：1495 / 1505

页数：10