期刊
BIOMACROMOLECULES
卷 21, 期 4, 页码 1568-1577出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.biomac.0c00127
关键词
-
资金
- Spanish Ministry of Economy, Industry and Competitiveness (Fondo Europeo de Desarrollo Regional FEDER) [CTQ2017-84966-C2-2-R, FILMBIOCEL CTQ2016-77936-R, MICROBIOCEL CTQ2017-84966-C2-1-R]
- Pla de Recerca de Catalunya [2017SGR-30]
- Generalitat de Catalunya, Xarxa de Referencia en Biotecnologia (XRB)
- Programa Nacional de Becas de Posgrado en el Exterior Don Carlos Antonio Lopez del Ministerio de Hacienda del Paraguay
The production of paper-based bacterial cellulose-chitosan (BC-Ch) nanocomposites was accomplished following two different approaches. In the first, BC paper sheets were produced and then immersed in an aqueous solution of chitosan (BC-ChI); in the second, BC pulp was impregnated with chitosan prior to the production of paper sheets (BC-ChM). BC-Ch nanocomposites were investigated in terms of physical characteristics, antimicrobial and antioxidant properties, and the ability to inhibit the formation of biofilms on their surface. The two types of BC-Ch nanocomposites maintained the hydrophobic character, the air barrier properties, and the high crystallinity of the BC paper. However, BC-ChI showed a surface with a denser fiber network and with smaller pores than those of BC-ChM. Only 5% of the chitosan leached from the BC-Ch nanocomposites after 96 h of incubation in an aqueous medium, indicating that it was well retained by the BC paper matrix. BC-Ch nanocomposites displayed antimicrobial activity, inhibiting growth of and having a killing effect against bacteria Staphylococcus aureus and Pseudomonas aeruginosa and yeast Candida albicans. Moreover, BC-Ch papers showed activity against the formation of a biofilm on their surface. The incorporation of chitosan increased the antioxidant activity of the BC paper. Paper-based BC-Ch nanocomposites combined the physical properties of BC paper and the antimicrobial, antibiofilm, and antioxidant activities of chitosan.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据