Quaternary-ammonium chitosan, a promising packaging material in the food industry

Qiu, Yu-Long; Li, Yixi; Zhang, Gong-Liang; Hao, Hongshun; Hou, Hong-Man; Bi, Jingran

doi:10.1016/j.carbpol.2023.121384

Cited by 23 publications

(1 citation statement)

References 116 publications

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“…By incorporating a quaternary moiety into chitosan, the resultant polymer gains permanent cationic charges on its backbone, leading to enhancements in properties like water solubility, antimicrobial activity, mucoadhesiveness, and permeability [201,202]. This modification enables multiple applications, primarily in the biomedical and pharmaceutical fields [203,204]. Traditional forms of quaternized chitosan, such as N,N,N-trimethyl chitosan (TMC) and N-[(2-hydroxy-3-trimethyl ammonium) propyl] chitosan (HTCC), have been widely used, alongside newer variants incorporating pyridinium or phosphonium salts [199].…”

Section: Biocatalysis For Chitin/chitosan Modificationsmentioning

confidence: 99%

Strategies to Prepare Chitin and Chitosan-Based Bioactive Structures Aided by Deep Eutectic Solvents: A Review

Durante-Salmerón,

Fraile-Gutiérrez,

Gil-Gonzalo

et al. 2024

Catalysts

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Chitin and chitosan, abundant biopolymers derived from the shells of crustaceans and the cell walls of fungi, have garnered considerable attention in pharmaceutical circles due to their biocompatibility, biodegradability, and versatile properties. Deep eutectic solvents (DESs), emerging green solvents composed of eutectic mixtures of hydrogen bond acceptors and donors, offer promising avenues for enhancing the solubility and functionality of chitin and chitosan in pharmaceutical formulations. This review delves into the potential of utilizing DESs as solvents for chitin and chitosan, highlighting their efficiency in dissolving these polymers, which facilitates the production of novel drug delivery systems, wound dressings, tissue engineering scaffolds, and antimicrobial agents. The distinctive physicochemical properties of DESs, including low toxicity, low volatility, and adaptable solvation power, enable the customization of chitin and chitosan-based materials to meet specific pharmaceutical requirements. Moreover, the environmentally friendly nature of DESs aligns with the growing demand for sustainable and eco-friendly processes in pharmaceutical manufacturing. This revision underscores recent advances illustrating the promising role of DESs in evolving the pharmaceutical applications of chitin and chitosan, laying the groundwork for the development of innovative drug delivery systems and biomedical materials with enhanced efficacy and safety profiles.

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Section: Biocatalysis For Chitin/chitosan Modificationsmentioning

confidence: 99%

Strategies to Prepare Chitin and Chitosan-Based Bioactive Structures Aided by Deep Eutectic Solvents: A Review

Durante-Salmerón,

Fraile-Gutiérrez,

Gil-Gonzalo

et al. 2024

Catalysts

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Anion exchange membrane with enhanced alkaline stability through radiation grafting of ETFE for solid polymer electrolytes

Govind,

Rattan,

Ameduri

et al. 2024

Polymer Engineering & Sci

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Solid polymer electrolyte membranes are considered as the nub of many electrochemical devices. Given the climate crisis and related concerns, the evolution of new membrane materials to support the sustainable systems is inevitable. Building on recent advances with the radiation technique and polymer chemistry, herein, anion exchange membranes (AEMs), ETFE‐g‐1VIm/4VP, were fabricated through graft copolymerization of vinyl heterocyclic monomer binary mixture, such as 1‐vinylimidazole (1‐VIm) and 4‐vinylpyridine (4‐VP) onto ethylene tetrafluoroethylene (ETFE), a main polymer backbone without aryl ether bonds. The grafting reaction was achieved at 60°C and then followed by quaternization as a subsequent step. The effects of various reaction grafting conditions were investigated. The ETFE‐g‐1VIm/4VP AEM were characterized w.r.t the morphological and structural features. The dense surface of the grafted membranes is proved by field emission‐scanning electron microscopy (FE‐SEM) images, which also show that the vinyl entities are clearly distributed in the prepolymer, which may lead to a continuous ion transport channel. AEMs processed from the highest graft yield showed good hydroxide conductivity at 90°C, reaching 16.9 mS/cm due to the presence of more transport sites. The same membrane has a relatively good alkaline stability, which is studied through weight percentage method and FT‐IR. Hence, we assume that the introduction of multi‐cationic moieties, pyridinium and imidazolium, contributes to the performance of anion exchange membranes and makes a perfect balance, especially the hydrophilicity and hydrophobicity. These data highlight the potential of the copolymer as an anion exchange membrane for wide spectra of electrochemical applications.Highlights AEMs based on ETFE‐g‐1VIm/4VP are developed via radiation grafting. The membrane exhibits remarkable alkaline stability. FT‐IR, SEM, and weight percentage methods were used to prove the alkaline stability. The membrane has the potential to be used for different electrochemical applications.

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Synthesis, Electrochemical Studies and Theoretical Calculations of Sulfo‐Schiff Bases

Bozkurt,

Şahin,

Şahin

et al. 2024

ChemistrySelect

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In this study, two different water‐soluble Schiff base ligands as sodium(Z)‐3((2,5‐dihydroxybenzylidene)amino)benzene sulfonate (SLI) ve sodium (Z)3‐((3,4‐dihydroxybenzylidene)amino)benzene sulfonate (SLII) were synthesized as a result of the condensation reaction of 3‐aminobenzenesulfonicacid containing sulfo group with 2,5‐dihydroxybenzaldehyde and 3,4‐dihydroxybenzaldehyde, respectively. The chemical structures of the synthesized Schiff base ligands were characterized by melting point determination, elemental analysis, FT‐IR and 1H‐NMR techniques. Electrochemical behaviors of synthesized SLI and SLII ligands were examined by cyclic voltammetry technique against Ag/AgCl/KCl(sat) at the glassy carbon electrode in Britton Robinson buffer solution, pH 5.0. Electrode surfaces modified with SLI and SLII ligands were characterized by cyclic voltammetry technique in the presence of ferrocene and potassium hexacyanoferrate (III) redox probes, water contact angle measurement, scanning electron microscope and atomic force microscope and compared with the data of the bare glassy carbon electrode surface. Theoretical calculations of SLI and SLII ligand were performed with Density Functional Theory (DFT) and compared with experimental results.

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Quaternary-ammonium chitosan, a promising packaging material in the food industry

Cited by 23 publications

References 116 publications

Strategies to Prepare Chitin and Chitosan-Based Bioactive Structures Aided by Deep Eutectic Solvents: A Review

Strategies to Prepare Chitin and Chitosan-Based Bioactive Structures Aided by Deep Eutectic Solvents: A Review

Anion exchange membrane with enhanced alkaline stability through radiation grafting of ETFE for solid polymer electrolytes

Synthesis, Electrochemical Studies and Theoretical Calculations of Sulfo‐Schiff Bases

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