Chitosan: An Overview of Its Properties and Applications

Polymers, Год журнала: 2021, Номер 13(19), С. 3256 - 3256

Опубликована: Сен. 24, 2021

Chitosan has garnered much interest due to its properties and possible applications. Every year the number of publications patents based on this polymer increase. exhibits poor solubility in neutral basic media, limiting use such conditions. Another serious obstacle is directly related natural origin. not a single with defined structure but family molecules differences their composition, size, monomer distribution. These have fundamental effect biological technological performance polymer. Moreover, some claimed are discrete. In review, we discuss how chitosan chemistry can solve problems boost properties. We focus main relationship physicochemical Then, review two applications green processes: synthesis metallic nanoparticles as support for biocatalysts. Finally, briefly describe making makes it develop variety systems drug delivery.

Язык: Английский

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Developments and application of chitosan-based adsorbents for wastewater treatments

Environmental Research, Год журнала: 2023, Номер 226, С. 115530 - 115530

Опубликована: Фев. 28, 2023

Язык: Английский

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A Review in Investigation of Marine Biopolymer (Chitosan) for Bioapplications

ES Materials & Manufacturing, Год журнала: 2023, Номер unknown

Опубликована: Янв. 1, 2023

Recent studies have used more marine-origin polysaccharides since they are widely available, economical, biocompatible, and biodegradable.These characteristics promote their technological use in water treatment, tissue engineering, cancer therapy, wound dressing, drug delivery systems, biosensors.Due to its versatility capacity be produced from waste marine crustaceans, chitosan is becoming important a range of fields.It first utilized biomedical applications due versatile properties, which include biocompatibility, antibacterial activity, biodegradability.A summary (chitosan), including supply, chemical, biological characteristics, uses given this review.

Язык: Английский

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Advances in the preparation, characterization, and biological functions of chitosan oligosaccharide derivatives: A review

Carbohydrate Polymers, Год журнала: 2024, Номер 332, С. 121914 - 121914

Опубликована: Фев. 5, 2024

Язык: Английский

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Chitosan-based nanoconjugates: A promising solution for enhancing crops drought-stress resilience and sustainable yield in the face of climate change

Plant Nano Biology, Год журнала: 2024, Номер 7, С. 100059 - 100059

Опубликована: Янв. 23, 2024

Climate change poses significant challenges to agriculture, impacting crop production through various means such as rising drought, temperatures, altered rainfall patterns, extreme weather events, and changing pest dynamics. These changes pose a threat global food security livelihoods due reduced yields, lower quality, increased vulnerability pests diseases. To safeguard crops build resilience, addressing climate adopting sustainable agricultural practices is crucial for productivity. The review highlights the chitosan based nanoconjugates potential tool revolutionize help address posed by on security. Environmental stresses trigger range of responses in plants, including growth rate, productivity, cellular metabolism, gene expression alterations. One paramount impacts plants water deficit stress, which disrupts relations, causes metabolic disturbances, generates reactive oxygen species, leads damage. counteract these adverse effects, chitosan, naturally occurring polymer emerged promising biostimulator elicitor agriculture. Its non-toxic, biodegradable, biocompatible properties make it well-suited applications. Chitosan enhances physiological helps mitigate negative abiotic activating stress transduction pathways. nanoconjugates, formed integrating with metallic nanoparticles, exhibit modified structural functional properties, making them more effective mitigating stress-related effects plants. Their intelligent slow delivery mechanisms contribute their success enhancing plant development sustainably. Additionally, encapsulation metals or elements reduces toxicity, enables slow-release ensures long-lasting effects. Nanoconjugates have been successfully utilized priming horticultural enhance tolerance promote yield improvement. Given results, use promoting improvement warrants continued exploration field nanotechnology.

Язык: Английский

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Potential Medical Applications of Chitooligosaccharides

Polymers, Год журнала: 2022, Номер 14(17), С. 3558 - 3558

Опубликована: Авг. 29, 2022

Chitooligosaccharides, also known as chitosan oligomers or chitooligomers, are made up of with a degree polymerization (DP) that is less than 20 and an average molecular weight (MW) lower 3.9 kDa. COS can be produced through enzymatic conversions using chitinases, physical chemical applications, combination these strategies. significant interest for pharmacological medical applications due to its increased water solubility non-toxicity, wide range bioactivities, including antibacterial, anti-inflammatory, anti-obesity, neuroprotective, anticancer, antioxidant effects. This review aims outline the recent advances potential in various diseases conditions based on available literature, mainly from preclinical research. The prospects further vivo studies translational research field highlighted.

Язык: Английский

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Effects of microgels fabricated by microfluidic on the stability, antioxidant, and immunoenhancing activities of aquatic protein

Journal of Future Foods, Год журнала: 2024, Номер 5(1), С. 57 - 67

Опубликована: Фев. 27, 2024

Aquatic products are considered a potential source of novel bioactive proteins, which used as therapeutic drugs for the treatment different diseases (such oxidative stress, immunocompromised, and inflammation), well nutraceuticals cosmetics. However, physical chemical properties proteins unstable, they easily denatured by influence external high temperature polar pH during processing, resulting in loss their functional activity. Herein, Fenneropenaeus chinensis water-soluble protein (FCWP) Lateolabrax japonicus (LJWP) were encapsulated within spherical biopolymer microgels composed pectin chitosan produced microfluidic device. The samples remained inside when exposed to upper gastrointestinal but released simulated colonic fluid due hydrolysis effect enzymes secreted microflora. results showed that improve thermal stability FCWP LJWP interaction between polysaccharides microgels. In addition, encapsulation did not affect antioxidant immunoenhancing activities LJWP. summary, these suitable oral colon-specific delivery foods supplements.

Язык: Английский

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Enhancing gut barrier integrity: Upregulation of tight junction proteins by chitosan oligosaccharide through the ERK1/2 signaling pathway

Nutrition, Год журнала: 2024, Номер 124, С. 112428 - 112428

Опубликована: Март 19, 2024

Язык: Английский

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Glycated Walnut Meal Peptide–Calcium Chelates: Preparation, Characterization, and Stability

Foods, Год журнала: 2024, Номер 13(7), С. 1109 - 1109

Опубликована: Апрель 4, 2024

Finding stable and bioavailable calcium supplements is crucial for addressing deficiency. In this study, glycated peptide–calcium chelates (WMPHs–COS–Ca) were prepared from walnut meal protein hydrolysates (WMPHs) chitosan oligosaccharides (COSs) through the Maillard reaction, structural properties stability of WMPHs–COS–Ca characterized. The results showed that WMPHs COSs exhibited high binding affinities, with a glycation degree 64.82%. After glycation, Asp, Lys, Arg decreased by 2.07%, 0.46%, 1.06%, respectively, which indicated these three amino acids are involved in reaction. addition, compared WMPHs, emulsifying ability emulsion WMPHs–COS increased 10.16 mg2/g 52.73 min, suggesting have better processing characteristics. chelation ions, rate peptides molecular weights less than 1 kDa was highest (64.88%), optimized preparation conditions 5:1 w/w WMPH–COS/CaCl2s, temperature 50 °C, time pH 7.0. Scanning electron microscopy “bridging role” WMPHs-COS changed to loose structure. UV–vis spectroscopy Fourier transform infrared spectrometry nitrogen atoms, carboxyl oxygen carbon atoms chelated forming WMPHs-COS-Ca. Moreover, WMPHs-COS-Ca relatively at temperatures under acidic alkaline environmental digestion gastrointestinal tract, indicating greater bioavailability.

Язык: Английский

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A comprehensive characterization of Hermetia illucens derived chitosan produced through homogeneous deacetylation

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 271, С. 132669 - 132669

Опубликована: Май 25, 2024

The increasing demand for chitin and chitosan is driving research to explore alternative sources crustaceans. Insects, particularly bioconverters as Hermetia illucens, are promising substitutes they process food industry waste into valuable molecules, including chitin. Chitosan can be produced by deacetylation: hot deacetylation obtain a heterogeneous chitosan, the commonly produced, cold homogeneous not widely available. two different treatments lead arrangement of amine acetyl groups in structure, affecting its molecular weight, degree, biological activity. This first report on production chemical-physical characterization homogenous derived from H. illucens larvae, pupal exuviae, adults. work, addition our group, completes overview chitosan. yield values obtained exuviae (3 7 %) range insect (2-8 crustaceans (4-15 evaluation antioxidant activity antimicrobial properties against Gram-negative (Escherichia coli) Gram-positive (Micrococcus flavus) bacteria confirmed great versatility biomedical industrial applications suitability an source

Язык: Английский

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