Fabrication of Novel Cellulose-Based Antibacterial Film Loaded with Poacic Acid against Staphylococcus Aureus
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ORIGINAL PAPER
Fabrication of Novel Cellulose‑Based Antibacterial Film Loaded with Poacic Acid against Staphylococcus Aureus Yinghan Hu1 · Qing Guo1 · Peiwen Liu1 · Ruonan Zhu1 · Fachuang Lu2 · Shri Ramaswamy3 · Yuying Wu1 · Feng Xu1 · Xueming Zhang1 Accepted: 30 September 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Aimed at decreasing the environmental pollution caused by petroleum-derived packing materials, many efforts have been directed towards fabricating biodegradable substitutes, especially of cellulose-based film with functional properties. In this paper, a totally plant-derived antibacterial film was successfully prepared. Regenerated cellulose films were used as substrate and poacic acid, a decarboxylated product from 8–5-diferulic acid, as fungicides. The physical properties and thermal stability of the prepared plant-derived antibacterial films were characterized, and the antibacterial activity was also assessed as the function poacic acid contents. The morphology showed that the cellulose/poacic acid films exhibited a homogeneous and smooth surface and poacic acid was successfully incorporated into cellulose films as revealed by Fourier-transform infrared (FT-IR) spectroscopy and fluorescent microscopy. It was noted that both the tensile strength and thermal stability of the antibacterial films decreased due to the incorporation of the poacic acid. Remarkably, the prepared cellulose/poacic acid films exhibited superior antibacterial activity against Staphylococcus aureus. The notable properties of the cellulose/poacic acid films are promising for applications in food and medical packaging to enhance their safety. Keywords Cellulose · Poacic acid · Antibacterial films · Packaging
Introduction Packaging materials, mainly derived from non-degradable petroleum-based plastics, are closely related to people’s lives, and they contribute to serious environmental pollution problems [1]. Therefore, eco-friendly packaging materials Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10924-020-01915-4) contains supplementary material, which is available to authorized users. * Yuying Wu wuyuying‑[email protected] * Xueming Zhang [email protected] 1
Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, 100083 Beijing, People’s Republic of China
2
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 510640 Guangzhou, People’s Republic of China
3
Department of Bioproducts and Biosystems Engineering, University of Minnesota, Minneapolis 55108, MN, USA
attract much attention due to their biocompatibility and biodegradability. To date, many renewable and abundant biopolymers, including polysaccharides [2], proteins [3], chitosan [4, 5], lipid-based material [6], and their combination [7], have been exploited as raw material to fabricate biodegradable films. Cellulose, world’s most abundant natural polysaccharides, has recently been studied as potential pa
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