IL versus DES: Impact on chitin pretreatment to afford high quality and highly functionalizable chitosan

Huet, Gaël; Hadad, Caroline; González‐Domínguez, José M.; Courty, Matthieu; Jamali, Arash; Cailleu, Dominique; Nhien, Albert Nguyen Van

doi:10.1016/j.carbpol.2021.118332

Cited by 16 publications

(4 citation statements)

References 44 publications

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“…TGA ( Table 8 ) indicated important quantities of ashes (>5%) in CHI-2, CHI-3 and CHI-4. Generally, after chitin extraction from crustacean shells, the ash percentage should not exceed 5% [ 55 , 62 ]. XPS analyses ( Table 7 ) showed a relatively high chlorine amount (>5%) in CHI-1, CHI-2, CHI-3 and CHI-3, a high calcium amount (~7%).…”

Section: Discussionmentioning

confidence: 99%

Deep Chemical and Physico-Chemical Characterization of Antifungal Industrial Chitosans—Biocontrol Applications

et al. 2023

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Five different chitosan samples (CHI-1 to CHI-5) from crustacean shells with high deacetylation degrees (>93%) have been deeply characterized from a chemical and physicochemical point of view in order to better understand the impact of some parameters on the bioactivity against two pathogens frequently encountered in vineyards, Plasmopara viticola and Botrytis cinerea. All the samples were analyzed by SEC-MALS, 1H-NMR, elemental analysis, XPS, FTIR, mass spectrometry, pyrolysis, and TGA and their antioxidant activities were measured (DPPH method). Molecular weights were in the order: CHI-4 and CHI-5 (MW >50 kDa) > CHI-3 > CHI-2 and CHI-1 (MW < 20 kDa). CHI-1, CHI-2 and CHI-3 are under their hydrochloride form, CHI-4 and CHI-5 are under their NH2 form, and CHI-3 contains a high amount of a chitosan calcium complex. CHI-2 and CHI-3 showed higher scavenging activity than others. The bioactivity against B. cinerea was molecular weight dependent with an IC50 for CHI-1 = CHI-2 (13 mg/L) ≤ CHI-3 (17 mg/L) < CHI-4 (75 mg/L) < CHI-5 (152 mg/L). The bioactivity on P. viticola zoospores was important, even at a very low concentration for all chitosans (no moving spores between 1 and 0.01 g/L). These results show that even at low concentrations and under hydrochloride form, chitosan could be a good alternative to pesticides.

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Section: Discussionmentioning

confidence: 99%

Deep Chemical and Physico-Chemical Characterization of Antifungal Industrial Chitosans—Biocontrol Applications

et al. 2023

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“…Setoguchi et al [19] successfully extracted chitin from crab shells by deproteinizing with 1-allyl-3-methylimidazolium bromide (AMIMBr) and demineralization with citric acid. Wineinger et al [45] compared the effects of two DES/IL pretreatment methods on the deacetylation efficiency of chitin from two insect sources (Bombyx eri, BE, and Hermetia illucens, HI) and shrimp shells. The results showed that the acetylation rate of CS obtained from BE larva by IL pretreatment (13-17%) was lower than DES pretreatment (18-27%).…”

Section: Ionic Liquid Extraction Methodsmentioning

confidence: 99%

Harnessing the Potential of Chitosan and Its Derivatives for Enhanced Functionalities in Food Applications

Yi,

Miao,

Yang

et al. 2024

Foods

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As one of the most abundant natural polysaccharides that possess good biological activity, chitosan is extracted from chitin. Its application in the food field is being increasingly valued. However, chitosan extraction is difficult, and its poor solubility limits its application. At present, the extraction methods include the acid–base method, new chemical methods, and biological methods. The extraction rates of chitin/chitosan are 4–55%, 13–14%, and 15–28%, respectively. Different chemical modifications have different effects on chitosan, making it applicable in different fields. This article reviews and compares the extraction and chemical modification methods of chitosan, emphasizing the importance of green extraction methods. Finally, the application prospects of chitosan in the food industry are discussed. This will promote the understanding of the advantages and disadvantages of different extraction methods for chitosan as well as the relationship between modification and application, providing valuable insights for the future development of chitosan.

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“…Their ability to disrupt hydrogen bonds in the insect exoskeleton facilitates the dissolution of chitin, enabling efficient extraction. Gaël et al compared the impact of both DES/IL pretreatments on the efficiency of the chemical deacetylation of chitin carried out over two insect sources (Bombyx eri and Hermetia illucens) and shrimp shells, resulting in chitosan obtained from IL-pretreated chitins from Bombyx eri larva presenting lower acetylation degrees (13-17%) than DES-pretreated samples (18-27%) [121].…”

Section: Other Extraction Methodsmentioning

confidence: 99%

Update on Chitin and Chitosan from Insects: Sources, Production, Characterization, and Biomedical Applications

Mei,

Kuzhir,

Godeau

2024

Biomimetics

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Insects, renowned for their abundant and renewable biomass, stand at the forefront of biomimicry-inspired research and offer promising alternatives for chitin and chitosan production considering mounting environmental concerns and the inherent limitations of conventional sources. This comprehensive review provides a meticulous exploration of the current state of insect-derived chitin and chitosan, focusing on their sources, production methods, characterization, physical and chemical properties, and emerging biomedical applications. Abundant insect sources of chitin and chitosan, from the Lepidoptera, Coleoptera, Orthoptera, Hymenoptera, Diptera, Hemiptera, Dictyoptera, Odonata, and Ephemeroptera orders, were comprehensively summarized. A variety of characterization techniques, including spectroscopy, chromatography, and microscopy, were used to reveal their physical and chemical properties like molecular weight, degree of deacetylation, and crystallinity, laying a solid foundation for their wide application, especially for the biomimetic design process. The examination of insect-derived chitin and chitosan extends into a wide realm of biomedical applications, highlighting their unique advantages in wound healing, tissue engineering, drug delivery, and antimicrobial therapies. Their intrinsic biocompatibility and antimicrobial properties position them as promising candidates for innovative solutions in diverse medical interventions.

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IL versus DES: Impact on chitin pretreatment to afford high quality and highly functionalizable chitosan

Cited by 16 publications

References 44 publications

Deep Chemical and Physico-Chemical Characterization of Antifungal Industrial Chitosans—Biocontrol Applications

Deep Chemical and Physico-Chemical Characterization of Antifungal Industrial Chitosans—Biocontrol Applications

Harnessing the Potential of Chitosan and Its Derivatives for Enhanced Functionalities in Food Applications

Update on Chitin and Chitosan from Insects: Sources, Production, Characterization, and Biomedical Applications

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