Preparation and characterization of catechol-grafted chitosan/gelatin/modified chitosan-AgNP blend films

Cao, Wenling; Yan, Jianghao; Liu, Chun; Zhang, Jin; Wang, Hong; Gao, Xianghua; Yan, Hong; Niu, Baolong; Li, Wenfeng

doi:10.1016/j.carbpol.2020.116643

Cited by 91 publications

(37 citation statements)

References 47 publications

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“…Then, 2% (w/v) maltodextrin and 2% (w/v) KGM were dissolved in deionized water. The chitosan solution was mixed with the same volume of the cassava starch solution, the gelatin solution, the maltodextrin solution and the KGM solution, respectively, and 2% (w/w) of glycerol and 0.25% (w/v) of lysozyme were added to each solution [24,25]. All the film-forming solutions (CS: chitosan solution containing 2% (w/w) glycerol and 0.25% (w/v) lysozyme; KGCL: KGM-chitosan solution containing 2% (w/w) glycerol and 0.25% (w/v) lysozyme; MCL: maltodextrin-chitosan solution containing 2% (w/w) glycerol and 0.25% (w/v) lysozyme; GCL: gelatin-chitosan solution containing 2% (w/w) glycerol and 0.25% (w/v) lysozyme; and CSCL: cassava starch-chitosan solution containing 2% (w/w) glycerol and 0.25% (w/v) lysozyme) were prepared.…”

Section: Film Preparationmentioning

confidence: 99%

Characterization of Chitosan Films Incorporated with Different Substances of Konjac Glucomannan, Cassava Starch, Maltodextrin and Gelatin, and Application in Mongolian Cheese Packaging

Zheng

Zhou

et al. 2021

Coatings

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Four kinds of edible composite films based on chitosan combined with additional substances (konjac glucomannan, cassava starch, maltodextrin and gelatin) and the addition of lysozyme were prepared and used as packaging materials for Mongolian cheese. The prepared composite films were evaluated using scanning electron microscopy and Fourier transform infrared spectroscopy. The physicochemical properties of all chitosan composite films, including thickness, viscosity, opacity, color, moisture content, water vapor permeability, tensile strength and elongation at break, were measured. The results show that Konjac glucomannan–chitosan composite film presented the strongest mechanical property and highest transparency. The cassava starch–chitosan composite film presented the highest water barrier property. The study on the storage characteristics of Mongolian cheese was evaluated at 4 °C. The results show that the cheese packaging by cassava starch–chitosan composite film presented better treatment performance in maintaining the quality, reducing weight loss and delayering microbial growth.

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Section: Film Preparationmentioning

confidence: 99%

Characterization of Chitosan Films Incorporated with Different Substances of Konjac Glucomannan, Cassava Starch, Maltodextrin and Gelatin, and Application in Mongolian Cheese Packaging

Zheng

Zhou

et al. 2021

Coatings

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“…The prepared bio-nanocomposites showed exceptional antibacterial behaviors against S. aureus and E. coli with up to 65% and 70% bacterial death percentage, respectively. Their results also confirmed a higher antibacterial behavior against Gram-negative than Gram-positive bacteria [ 99 ]. In another study, Kadam et al, (2019), the pH-dependent sustained release of AgNPs synthesized using Nigella sativa extract with a biogenic method from chitosan matrix was demonstrated.…”

Section: Comparison Of Different Chitosan and Chitosan-metal Nanocompositesmentioning

confidence: 72%

Antimicrobial Biodegradable Food Packaging Based on Chitosan and Metal/Metal-Oxide Bio-Nanocomposites: A Review

2021

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Finding a practical alternative to decrease the use of conventional polymers in the plastic industry has become an acute concern since industrially-produced plastic waste, mainly conventional food packaging, has become an environmental crisis worldwide. Biodegradable polymers have attracted the attention of researchers as a possible alternative for fossil-based plastics. Chitosan-based packaging materials, in particular, have become a recent focus for the biodegradable food packaging sector due to their biodegradability, non-toxic nature, and antimicrobial properties. Chitosan, obtained from chitin, is the most abundant biopolymer in nature after cellulose. Chitosan is an ideal biomaterial for active packaging as it can be fabricated alone or combined with other polymers as well as metallic antimicrobial particles, either as layers or as coacervates for examination as functional components of active packaging systems. Chitosan-metal/metal oxide bio-nanocomposites have seen growing interest as antimicrobial packaging materials, with several different mechanisms of inhibition speculated to include direct physical interactions or chemical reactions (i.e., the production of reactive oxygen species as well as the increased dissolution of toxic metal cations). The use of chitosan and its metal/metal oxide (i.e., titanium dioxide, zinc oxide, and silver nanoparticles) bio-nanocomposites in packaging applications are the primary focus of discussion in this review.

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“…Other examples of CS-based imine systems were disclosed from reaction with nitriles [ 75 ] or as intermediates of irreversible transformations including Mannich reaction [ 84 ] or reductive amination [ 85 , 86 ]. The resulting systems showed enhanced stability.…”

Section: Strategies For Covalent Functionalizationmentioning

confidence: 99%

“…Table 3 presents studies where CS is stepwise conjugated with a small molecule and further combined with natural or synthetic polymers to bring complementary properties to the final material. Relevant examples include gelatin (enhanced water solubility and water retention) [ 84 ], poly(aniline) (electroconductivity) [ 75 ], poly(dimethylaminoethyl methacrylate) (DMAEMA), and N,N-methylene bisacrylamide (BisAAm) copolymer (electrostatic interactions) [ 154 ]. In particular, gelatin and polyvinyl alcohol are a common combination found for tissue engineering applications.…”

Section: Combination Of Covalent and Non-covalent Modificationsmentioning

confidence: 99%

“…Encapsulation or coating of NPs is performed when the application involves non-solubilized films or beads. Metal NPs (AuNP [ 148 ] and AgNP [ 84 ]) and metal oxide NPs (ZnO [ 63 , 83 ] and Fe 3 O 4 [ 164 , 165 , 166 ]) were combined with CS-based polymers, providing stabilizing and anti-swelling effects as well as adding complementary features to the resulting conjugates, such as optical contrast, magnetization, or bactericide effect.…”

Section: Combination Of Covalent and Non-covalent Modificationsmentioning

confidence: 99%

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Chitosan Functionalization: Covalent and Non-Covalent Interactions and Their Characterization

2021

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Chitosan (CS) is a natural biopolymer that has gained great interest in many research fields due to its promising biocompatibility, biodegradability, and favorable mechanical properties. The versatility of this low-cost polymer allows for a variety of chemical modifications via covalent conjugation and non-covalent interactions, which are designed to further improve the properties of interest. This review aims at presenting the broad range of functionalization strategies reported over the last five years to reflect the state-of-the art of CS derivatization. We start by describing covalent modifications performed on the CS backbone, followed by non-covalent CS modifications involving small molecules, proteins, and metal adjuvants. An overview of CS-based systems involving both covalent and electrostatic modification patterns is then presented. Finally, a special focus will be given on the characterization techniques commonly used to qualify the composition and physical properties of CS derivatives.

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Preparation and characterization of catechol-grafted chitosan/gelatin/modified chitosan-AgNP blend films

Cited by 91 publications

References 47 publications

Characterization of Chitosan Films Incorporated with Different Substances of Konjac Glucomannan, Cassava Starch, Maltodextrin and Gelatin, and Application in Mongolian Cheese Packaging

Characterization of Chitosan Films Incorporated with Different Substances of Konjac Glucomannan, Cassava Starch, Maltodextrin and Gelatin, and Application in Mongolian Cheese Packaging

Antimicrobial Biodegradable Food Packaging Based on Chitosan and Metal/Metal-Oxide Bio-Nanocomposites: A Review

Chitosan Functionalization: Covalent and Non-Covalent Interactions and Their Characterization

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