Investigation of the influence of natural deep eutectic solvents (NaDES) in the properties of chitosan-stabilised films

Pontillo, Antonella Rozaria Nefeli; Koutsoukos, Spyridon; Welton, Tom; Detsi, Anastasia

doi:10.1039/d0ma01008a

Cited by 19 publications

(5 citation statements)

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“…The conductive properties of chitosan increased with the addition of DESs ChCl/lactic acid, taking into account the increased charge carrier density in the film, which showed that the chitosan/DES electrolytes are of great practical implications for the design of flexible and biobased supercapacitors (Vorobiov et al., 2021). In addition to ChCl‐based DESs, the plasticizing effect of DESs ChCl/lactic acid and betaine/lactic acid or as separate components in the formation of chitosan‐based films was compared (Pontillo et al., 2021). The thickness and weight of the films increase with the concentration of the DESs.…”

Section: Dess As Components Used In Polysaccharide‐based Packagingmentioning

confidence: 99%

“…The water vapor permeability of the film treated by the DESs (7.0–12.5 × 10 −9 g/Pa s m) increases more than the films with acetic acid (about 3.0 × 10 −9 g/Pa s m). Especially, the films prepared by DESs were significantly different from those treated by simple mixtures of DES compositions (Pontillo et al., 2021).…”

Section: Dess As Components Used In Polysaccharide‐based Packagingmentioning

confidence: 99%

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Advances in green solvents for production of polysaccharide‐based packaging films: Insights of ionic liquids and deep eutectic solvents

Liu

et al. 2022

Comp Rev Food Sci Food Safe

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The problems with plastic materials and the good film-forming properties of polysaccharides motivated research in the development of polysaccharide-based films. In the last 5 years, there has been an explosion of publications on using green solvents, including ionic liquids (ILs), and deep eutectic solvents (DESs) as candidates to substitute the conventional solvents/plasticizers for preparations of desired polysaccharide-based films. This review summarizes related properties and recovery of ILs and DESs, a series of green preparation strategies (including pretreatment solvents/reaction media, ILs/DESs as components, extraction solvents of bioactive compounds added into films), and inherent properties of polysaccharide-based films with/without ILs and DESs. Major reported advantages of these new solvents are high dissolving capacity of certain ILs/DESs for polysaccharides (i.e., up to 30 wt% for cellulose) and better plasticizing ability than traditional plasticizers. In addition, they frequently display intrinsic antioxidant and antibacterial activities that facilitate ILs/DESs applications in the processing of polysaccharide-based films (especially active food packaging films). ILs/DESs in the film could also be further recycled by water or ethanol/methanol treatment followed by drying/evaporation. One particularly promising approach is to use bioactive cholinium-based ILs and DESs with good safety and plasticizing ability to improve the functional properties of prepared films. Whole extracts by ILs/DESs from various byproducts can also be directlyThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Dess As Components Used In Polysaccharide‐based Packagingmentioning

confidence: 99%

Section: Dess As Components Used In Polysaccharide‐based Packagingmentioning

confidence: 99%

Advances in green solvents for production of polysaccharide‐based packaging films: Insights of ionic liquids and deep eutectic solvents

Liu

et al. 2022

Comp Rev Food Sci Food Safe

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“…In a recent study, it was reported that PRO:GLU-based DESs had also a similar behavior and slightly lowered the roughness from 4 to 3 nm in CS membranes [24]. According to Pontillo et al [36], the resultant smoothness of CS membranes doped with DES reveals an existing interaction with the chitosan macromolecule. The low value of roughness in the CS: PRO:XYL membranes allows us to have a perspective of possible hydrophilic membranes.…”

Section: Membrane Characterizationmentioning

confidence: 89%

Merging Proline:Xylitol Eutectic Solvent in Crosslinked Chitosan Pervaporation Membranes for Enhanced Water Permeation in Dehydrating Ethanol

2023

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The scope of this research aims at merging a new deep eutectic mixture (DES) into a biopolymer-based membrane for a pervaporation application in dehydrating ethanol. Herein, an L-proline:xylitol (at 5:1) eutectic mixture was successfully synthesized and blended with chitosan (CS). A complete characterization of the hybrid membranes, in terms of morphology, solvent uptake, and hydrophilicity, has been conducted. As part of their applicability, the blended membranes were assayed for their ability to separate water from ethanolic solutions by means of pervaporation. At the highest temperature (50 °C), a water permeation of ca. 0.46 kg m−2 h−1 was acquired, representing a higher permeation than the pristine CS membranes (ca. 0.37 kg m−2 h−1). Therefore, CS membranes demonstrated an enhanced water permeation thanks to their blending with the hydrophilic L-proline:xylitol agent, making these membranes a good candidate for other separations containing polar solvents.

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“…A further paper, in which NADES were used to endow plasticizing properties to chitosan films, was presented by Pontillo et al [105]. The authors investigated the solubility of chitosan in NaDES aqueous solutions of choline chloride: lactic acid (ChCl-LA, molar ratio 1:1.5) and betaine: lactic acid (bet-LA, 1:2), demonstrating that chitosan can be dissolved in 1% NaDES w/v water solutions.…”

Section: Nades In the Pharmaceutical Fieldmentioning

confidence: 99%

NaDES Application in Cosmetic and Pharmaceutical Fields: An Overview

Villa,

Caviglia,

Robustelli della Cuna

et al. 2024

Gels

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Natural deep eutectic solvents (NaDES) represent a new generation of green, non-flammable solvents, useful as an efficient alternative to the well-known ionic liquids. They can be easily prepared and exhibit unexpected solubilizing power for lipophilic molecules, although those of a hydrophilic nature are mostly used. For their unique properties, they can be recommend for different cosmetic and pharmaceutical applications, ranging from sustainable extraction, obtaining ready-to-use ingredients, to the development of biocompatible drug delivery responsive systems. In the biomedical field, NaDES can be used as biopolymer modifiers, acting as delivery compounds also known as “therapeutic deep eutectic systems”, being able to solubilize and stabilize different chemical and galenical formulations. The aim of this review is to give an overview of the current knowledge regarding natural deep eutectic solvents specifically applied in the cosmetic and pharmaceutical fields. The work could help to disclose new opportunities and challenges for their implementation not only as green alternative solvents but also as potential useful pathways to deliver bioactive ingredients in innovative formulations.

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Investigation of the influence of natural deep eutectic solvents (NaDES) in the properties of chitosan-stabilised films

Abstract: In the present work, the plasticising effect of the natural deep eutectic solvents (NaDES) choline chloride/lactic acid and betaine/lactic acid in the formation of chitosan-stabilised films is investigated. The films...

Cited by 19 publications

References 50 publications

Advances in green solvents for production of polysaccharide‐based packaging films: Insights of ionic liquids and deep eutectic solvents

Advances in green solvents for production of polysaccharide‐based packaging films: Insights of ionic liquids and deep eutectic solvents

Merging Proline:Xylitol Eutectic Solvent in Crosslinked Chitosan Pervaporation Membranes for Enhanced Water Permeation in Dehydrating Ethanol

NaDES Application in Cosmetic and Pharmaceutical Fields: An Overview

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