Facile preparation of a novel iminodisuccinate modified chitin and its excellent properties as a silver bioadsorbent and antibacterial agent.

Autor: Ge YM; National Engineering Research Center For Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316000, China., Zhang Y; National Engineering Research Center For Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316000, China., Yang JS; Marine Science and Technology College, Zhejiang Ocean University, Zhoushan 316000, China., Ye WY; School of Petrochemical and Environment, Zhejiang Provincial Key Laboratory of Petrochemical Pollution Control, Zhejiang Ocean University, Zhoushan 316000, China., Gao HM; Marine Science and Technology College, Zhejiang Ocean University, Zhoushan 316000, China., Liu JZ; School of Petrochemical and Environment, Zhejiang Provincial Key Laboratory of Petrochemical Pollution Control, Zhejiang Ocean University, Zhoushan 316000, China. Electronic address: liujz@zjou.edu.cn., Bao QB; Ningbo College of Health Sciences, Ningbo 315100, China., Jiang W; National Engineering Research Center For Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316000, China.
Jazyk: angličtina
Zdroj: Carbohydrate polymers [Carbohydr Polym] 2023 Jul 15; Vol. 312, pp. 120793. Date of Electronic Publication: 2023 Mar 11.
DOI: 10.1016/j.carbpol.2023.120793
Abstrakt: A novel iminodisuccinate modified chitin (ICH) was prepared using crab shells via a one-step facile procedure. The ICH with grafting degree of 1.46 and deacetylation degree of 47.68 % possessed maximum adsorption capacity of 2572.41 mg/g for silver ions (Ag(I)).The ICH also exhibited good selectivity and reusability. The adsorption followed better with the Freundlich isotherm model, while fitted well with both the Pseudo-first-order and Pseudo-second-order kinetics models. The characteristical results showed that the excellent Ag(I) adsorption capability of ICH should be attributed to both looser porous microstructure as well as additional functional groups-grafting molecular. Moreover, the Ag-loaded ICH (ICH-Ag) showed remarkable antibacterial properties against six typical pathogenic bacteria strains (Escherichia coli, Pseudomonas aeruginosa, Enterobacter aerogenes, Salmonella typhimurium, Staphylococcus aureus, and Listeria monocytogenes), with the corresponding 90 % minimal inhibitory concentrations ranged 0.426-0.685 mg/mL. Further study on the silver release, microcell morphology, and metagenomic analysis suggested that many Ag nanoparticles were formed after the Ag(I) adsorption, and the antibacterial mechanisms of the ICH-Ag involved both cell membranes destruction and intracellular metabolism disturbing. This research presented a coupling solution of crab shell wastes treatment with chitin-based bioadsorbents preparation, metal removal and recovery, as well as antibacterial agent production.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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