Delignified wood aerogels as scaffolds coated with an oriented chitosan–cyclodextrin co-polymer for removal of microcystin-LR

Gómez-Maldonado, Diego; Reynolds, Autumn Marie; Burnett, Daniel J.; Babu, R. Jayachandra; Waters, Matthew N.; Peresin, María Soledad

doi:10.1039/d2ra03556a

Cited by 5 publications

(1 citation statement)

References 53 publications

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“…In this sense, nanocellulose (NC)/CH materials with enhanced properties can be achieved by leveraging the opposite charge of the starting materials to create polyelectrolyte complexes (PECs) [ 29 ]. Additionally, since both NC and CH are β-glucans, these polymers also have the capability to form stable structures through specific hydrogen bonds facilitated by their structural and entropic behavior in water solutions [ 30 , 31 , 32 , 33 ]. These unique interactions obviate the need for additional substances, like crosslinkers.…”

Section: Introductionmentioning

confidence: 99%

Revalorization of Yerba Mate Residues: Biopolymers-Based Films of Dual Wettability as Potential Mulching Materials

Sanchez,

de Haro,

Domínguez

et al. 2024

Polymers

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Biodegradable mulching films are a very attractive solution to agronomical practices intended to achieve more successful crop results. And, in this context, the employment of agricultural and industrial food residues as starting material for their production is an alternative with economic and environmental advantages. This work reports the preparation of bilayer films having two different wettability characteristics from three bio-derived biopolymers: TEMPO-oxidized cellulose nanofibers isolated from infused Yerba Mate residues, Chitosan and Polylactic acid. The infused Yerba Mate residues, the isolated and oxidized cellulose nanofibers, and the films were characterized. Nanofibrillation yield, optical transmittance, cationic demand, carboxyl content, intrinsic viscosity, degree of polymerization, specific surface area and length were studied for the (ligno)cellulose nanofibers. Textural and chemical analysis, thermal and mechanical properties studies, as well as water and light interactions were included in the characterization of the films. The bilayer films are promising materials to be used as mulching films.

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Section: Introductionmentioning

confidence: 99%

Revalorization of Yerba Mate Residues: Biopolymers-Based Films of Dual Wettability as Potential Mulching Materials

Sanchez,

de Haro,

Domínguez

et al. 2024

Polymers

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Vegetable Lignocellulosic Residues and Chitosan as Valuable Resources in the Superabsorbent Bio-aerogel Development for Food Conservation

Sanchez,

Rincón,

de Haro Niza

et al. 2023

Food Bioprocess Technol

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Superabsorbent bio-aerogels were developed from TEMPO-oxidized cellulose nano bers (isolated from vegetables lignocellulosic residues) and two different commercial chitosan reactants (low and high molecular weight) by polyelectrolyte complex formation at room temperature. Three different thickness values were considered, and two different aging times were employed, thus leading to twelve different bio-aerogels samples. Remarkably, no crosslink agents nor organic solvents were used. All the developed materials were characterized and deeply studied. The bio-aerogels components were strongly interacting through hydrogen bonding, leading to highly porous and stable materials able to absorb high amounts of water and soybean oil. Then, the speci c tests to visualize the material's potential use as food absorbent pads showed: i) they were able to absorb simulated food exudates under a speci c pressure in higher quantities (≈ 4000%) than some commercial pads (≈ 1600%); ii) the materials have low to moderate antibacterial activities exposing better reduction effectiveness for Listeria monocytogenes than for Salmonella typhimurium; and iii) the antioxidant properties were in general low. In the light of all the results achieved, the bio-aerogels prepared from H-CH with an aging time of 24 h and whose thickness was around 2.1 mm (H-10g-24) were selected as the most appropriate for the desired application. 1.0-IntroductionConsumers criteria to buy a certain product have evolved over time. People have different ways to satisfy the same need since their intrinsic history and speci c consumption behavior, as well as the social in uences under which they are immersed, determine their wants. In this sense, buying a food product in many cases not only implies paying attention to the good's both price and quality, but it is also necessary to take notice about the product's precedence, freshness, safety, packaging, and environmental impact characteristics, among many others. Several of the above-mentioned characteristics have a close relation one with each other and, from some decades up to now, have been attracting increasing attention . For example, meat products have incorporated absorption pads as part of their packaging to entrap their possible exudates and, thus, to avoid visible drip or blood as well as undesired bad odors. Furthermore, some pads contain active compounds able to delay microbial growth and, at the same time, to extend the food shelf life (Yao et al. 2021). However, these pads are usually made of synthetic polymers making them harmful to the environment due to their non-biodegradable nature. Then, the moving towards equally useful, bio-based, and environmentally friendly food packaging materials is highly desired.The extraction of biopolymers from residue involves various positive ecological impacts, such as the reduction of i) residues accumulation due to its exploitation; ii) the use of non-renewable resources; and iii) non-biodegradable packaging waste. It is important to remark that this practice is not com...

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Exploring the effects of cellulose sources on silver reduction and the bacterial removal of nanocellulose-based hydrogel beads

Gomez-Maldonado,

Dickson,

et al. 2025

Carbohydrate Polymers

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Delignified wood aerogels as scaffolds coated with an oriented chitosan–cyclodextrin co-polymer for removal of microcystin-LR

Abstract: Herein, a preassembled chitosan-cyclodextrin was used as a versatile coating onto delignified wood as an alternative for the removal of microcystin-LR. The addition of β-cyclodextrin proved to allow the nanowood scaffold to adsorb up to 0.12 mg g−1.

Cited by 5 publications

References 53 publications

Revalorization of Yerba Mate Residues: Biopolymers-Based Films of Dual Wettability as Potential Mulching Materials

Revalorization of Yerba Mate Residues: Biopolymers-Based Films of Dual Wettability as Potential Mulching Materials

Vegetable Lignocellulosic Residues and Chitosan as Valuable Resources in the Superabsorbent Bio-aerogel Development for Food Conservation

Exploring the effects of cellulose sources on silver reduction and the bacterial removal of nanocellulose-based hydrogel beads

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