Novel silver-modified carboxymethyl chitosan antibacterial membranes using environment-friendly polymers

Li，Qirun1,2; Jiang，Shanxue1,2; Jia，Wenting1,2; Wang，Fang1,2; Wang，Zeru3; Cao，Xinyue1,2; Shen，Xianbao1,2; Yao，Zhiliang1,2

2022-11-01

10.1016/j.chemosphere.2022.136059

CHEMOSPHERE   Impact Factor & Quartile

0045-6535

1879-1298

The rapid reproduction of foodborne bacteria in food packaging threatens the health of consumers, the massive use and waste of packaging also causes serious environmental pollution. In this study, novel biodegradable antibacterial membranes based on silver-modified carboxymethyl chitosan (Ag-CMCS) were prepared. Polylactic acid (PLA) and polybutylene adipate-co-terephthalate (PBAT) were used as the base membrane materials. Characterization of the prepared membranes was performed by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), atomic force microscope (AFM), X-ray photoelectron spectroscopy (XPS), water contact angle, and so on. Especially, the silver on the surface of Ag-CMCS was proved to be metallic silver. For the first cycle of zone of inhibition test, the diameter of inhibition zone could reach up to 17 mm while the mass of silver released was negligible. The prepared antibacterial membranes could kill almost 100% of bacteria under certain conditions and inhibition zone still existed after more than 7 cycles of tests, indicating the prepared antibacterial membranes were effective. This study could provide new ideas for preparing efficient and environment-friendly antibacterial food packaging membranes.

Antibacterial membrane Carboxymethyl chitosan Eco-friendly polymer Food safety Ion exchange Zone of inhibition

SCI ; EI

English

Others

Beijing Technology and Business University[BTBUYP2020];Beijing Municipal Education Commission[PXM2019_014213_000007];

Environmental Sciences & Ecology

Environmental Sciences

WOS:000846598100005

PERGAMON-ELSEVIER SCIENCE LTD

20223412608959

Bacteria ; Cell proliferation ; Chitosan ; Contact angle ; Energy dispersive spectroscopy ; Ion exchange ; Scanning electron microscopy ; Silver ; X ray photoelectron spectroscopy

Biology:461.9 ; Precious Metals:547.1 ; Chemical Reactions:802.2 ; Organic Compounds:804.1 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Materials Science:951

ENVIRONMENT/ECOLOGY

2-s2.0-85136145210

Scopus

1.School of Ecology and Environment,Beijing Technology and Business University,Beijing,100048,China
2.State Environmental Protection Key Laboratory of Food Chain Pollution Control,Beijing,Technology and Business University,Beijing,100048,China
3.School of System Design and Intelligent Manufacturing,Southern University of Science and Technology,Shenzhen,518055,China

Li，Qirun,Jiang，Shanxue,Jia，Wenting,et al. Novel silver-modified carboxymethyl chitosan antibacterial membranes using environment-friendly polymers[J]. CHEMOSPHERE,2022,307.

Li，Qirun.,Jiang，Shanxue.,Jia，Wenting.,Wang，Fang.,Wang，Zeru.,...&Yao，Zhiliang.(2022).Novel silver-modified carboxymethyl chitosan antibacterial membranes using environment-friendly polymers.CHEMOSPHERE,307.

Li，Qirun,et al."Novel silver-modified carboxymethyl chitosan antibacterial membranes using environment-friendly polymers".CHEMOSPHERE 307(2022).