Next Article in Journal
Reprocessing of PLA/Graphene Nanoplatelets Nanocomposites
Next Article in Special Issue
Antimicrobial Carvacrol-Containing Polypropylene Films: Composition, Structure and Function
Previous Article in Journal
New Development of Membrane Base Optoelectronic Devices
Previous Article in Special Issue
Preparation of Copolymer-Based Nanoparticles with Broad-Spectrum Antimicrobial Activity
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Polymers 2018, 10(1), 15; https://doi.org/10.3390/polym10010015

Preparation of Antibacterial Cellulose Paper Using Layer-by-Layer Assembly for Cooked Beef Preservation at Ambient Temperature

1
Research Institute of Food Safety, Kunming University of Science and Technology, Kunming 650600, China
2
Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, China
*
Author to whom correspondence should be addressed.
Received: 9 November 2017 / Revised: 11 December 2017 / Accepted: 20 December 2017 / Published: 23 December 2017
(This article belongs to the Special Issue Antimicrobial Polymers)
Full-Text   |   PDF [3135 KB, uploaded 27 December 2017]   |  

Abstract

Positively-charged ε-poly(l-lysine) (ε-PL) and negatively-charged carboxymethyl cellulose (CMC) were alternately deposited on a cellulose paper surface by the layer-by-layer (LBL) assembly technique. The formation of ε-PL/CMC multilayers was confirmed by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectra (FTIR), and zeta potential measurement. The morphologies of the multilayer-modified cellulose paper were observed by scanning electron microscopy (SEM). The ε-PL/CMC multilayers effectively improved not only the antibacterial activity of cellulose paper against both Escherichia coli and Staphylococcus aureus, but also the cellulose paper tensile strength property. Cellulose paper modified with a (ε-PL/CMC)4.5 multilayer exhibited the strongest antibacterial activity, selected for preserving cooked beef for nine days at ambient temperature, could extend the shelf-life of beef for about three days compared with common commercial PE films. The prepared antibacterial paper did not show any evidence of the cytotoxic effect since it could not increase the cytoplasmic lactate dehydrogenase release from L-929 fibroblast cells in contact with the antibacterial paper, suggesting the possibility of utilization in food packaging field. View Full-Text
Keywords: layer-by-layer; antibacterial paper; tensile strength; ε-poly(l-lysine); cooked beef preservation layer-by-layer; antibacterial paper; tensile strength; ε-poly(l-lysine); cooked beef preservation
Figures

Figure 1a

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Li, H.; Cui, R.; Peng, L.; Cai, S.; Li, P.; Lan, T. Preparation of Antibacterial Cellulose Paper Using Layer-by-Layer Assembly for Cooked Beef Preservation at Ambient Temperature. Polymers 2018, 10, 15.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Polymers EISSN 2073-4360 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top