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You searched for: Subject chitosan Remove constraint Subject: chitosan Subject term chitin Remove constraint Subject term: chitin
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1. A 3D printable dynamic nanocellulose/nanochitin self-healing hydrogel and soft strain sensor

Author:
Pejman Heidarian; Saleh Gharaie; Hossein Yousefi; Mariana Paulino; Akif Kaynak; Russell Varley; Abbas Z. Kouzani
Source:
Carbohydrate polymers 2022 v.291 pp. 119545
ISSN:
0144-8617
Subject:
ambient temperature; biocompatibility; cellulose; cellulose nanofibers; chitin; chitosan; crosslinking; hydrogels; hydrogen; imines; tannins
Abstract:
... Presented here is the synthesis of a 3D printable nano-polysaccharide self-healing hydrogel for flexible strain sensors. Consisting of three distinct yet complementary dynamic bonds, the crosslinked network comprises imine, hydrogen, and catecholato-metal coordination bonds. Self-healing of the hydrogel is demonstrated by macroscopic observation, rheological recovery, and compression measurements. ...
DOI:
10.1016/j.carbpol.2022.119545

2. Adsorption properties of heavy metals and antibiotics by chitosan from larvae and adult Trypoxylus dichotomus

Author:
Qiushi Jiang; Zhaolian Han; Weiping Li; Tingxu Ji; Yafeng Yuan; Junjie Zhang; Chunli Zhao; Zhiqiang Cheng; Song Wang
Source:
Carbohydrate polymers 2022 v.276 pp. 118735
ISSN:
0144-8617
Subject:
Trypoxylus dichotomus; adsorption; chitin; chitosan; levofloxacin; models; molecular weight; nanofibers; sulfamethoxazole; tetracycline
Abstract:
... Chitosan was prepared by hydrothermal deacetylation from multi-step protein purification chitin based on Trypoxylus dichotomus, for treating heavy metals and antibiotics. Chitosan with higher deacetylation degree and lower molecular weight were synthesized. The adult chitosan was composed of nanofibers arranged more evenly, showing higher yield, thermal stabilities and antimicrobial properties. Th ...
DOI:
10.1016/j.carbpol.2021.118735

3. Advances in the application of chitosan as a sustainable bioactive material in food preservation

Author:
Dawei Yu; Zijuan Yu; Wenyu Zhao; Joe M. Regenstein; Wenshui Xia
Source:
Critical reviews in food science and nutrition 2022 v.62 no.14 pp. 3782-3797
ISSN:
1549-7852
Subject:
biofilm; chitin; chitosan; food preservation; nutrition; oxidation
Abstract:
... Chitosan is obtained from chitin and considered to be one of the most abundant natural polysaccharides. Due to its functional activity, chitosan has received intense and growing interest in terms of applications for food preservation over the last half-century. Compared with earlier studies, recent research has increasingly focused on the exploration of preservation mechanism as well as the target ...
DOI:
10.1080/10408398.2020.1869920

4. Analysis of clinical trials on biomaterial and therapeutic applications of chitosan: A review

Author:
Maithili N. Kantak; Sonali S. Bharate
Source:
Carbohydrate polymers 2022 v.278 pp. 118999
ISSN:
0144-8617
Subject:
biocompatible materials; chitin; chitosan; drug carriers; drugs; immunogenicity; polymers
Abstract:
... Chitosan is a modified natural carbohydrate polymer derived from chitin that occurs in many natural sources. It has a diverse range of applications in medical and pharmaceutical sciences. Its primary and permitted use is biomaterial in medical devices. Chitosan and its derivatives also find utility in pharmaceuticals as an excipient, drug carrier, or therapeutic agent. The USFDA has approved chito ...
DOI:
10.1016/j.carbpol.2021.118999

5. Antimicrobial effects of chitosan and garlic against Salmonella spp., Escherichia coli O157:H7, and Listeria monocytogenes in hummus during storage at various temperatures

Author:
Tareq M. Osaili; Anas A. Al‐Nabulsi; Fayeza Hasan; Amin N. Olaimat; Sadi Taha; Mutamed Ayyash; Dima S. Nazzal; Ioannis N. Savvaidis; Reyad S. Obaid; Richard Holley
Source:
Journal of food science 2022 v.87 no.2 pp. 833-844
ISSN:
0022-1147
Subject:
Escherichia coli O157; Listeria monocytogenes; Salmonella; antimicrobial properties; biopolymers; chitin; chitosan; food science; garlic; taste
Abstract:
... The study aimed to evaluate the antimicrobial activity of 0.5 or 1% (w/w) chitosan and 1% (w/w) garlic against Salmonella spp., Escherichia coli O157:H7 and Listeria monocytogenes in hummus dip stored at 4, 10, or 25°C for 28, 21, or 7 days, respectively. In hummus without garlic, at all storage temperatures and storage periods, 0.5% chitosan decreased Salmonella spp., E. coli O157:H7, and L. mono ...
DOI:
10.1111/1750-3841.16025

6. Apple pomace biorefinery for ethanol, mycoprotein, and value-added biochemicals production by Mucor indicus

Author:
Nasim Espah Borujeni; Keikhosro Karimi; Joeri F.M. Denayer; Rajeev Kumar
Source:
Energy 2022 v.240 pp. 122469
ISSN:
0360-5442
Subject:
Mucor; apple pomace; biocompatible materials; biomass; biorefining; chitin; chitosan; energy; ethanol; ethanol production; fermentation; juices; saccharification; sulfuric acid; value added
Abstract:
... Apple pomace, a waste resulting after juice extraction, is often discarded in landfills, which can cause environmental issues. However, since apple pomace contains high levels of free sugars and structural carbohydrates, its conversion to fuels and biomaterials can mitigate environmental issues. In this study, an apple pomace feedstock-based biorefinery utilizing ethanolic Organosolv pretreatment ...
DOI:
10.1016/j.energy.2021.122469

7. Application of chitosan as edible coating to enhance storability and fruit quality of Kiwifruit: A Review

Author:
H.M.Prathibhani C. Kumarihami; Yun-Hee Kim; Yong-Bum Kwack; Joonyup Kim; Jin Gook Kim
Source:
Scientia horticulturae 2022 v.292 pp. 110647
ISSN:
0304-4238
Subject:
chitin; chitosan; ethylene production; fruit quality; kiwifruit; shelf life
Abstract:
... Chitosan, a natural polysaccharide derived from the deacetylation of chitin, has a great potential for a wide range of applications. As an edible coating material chitosan, has been reported to be highly effective in extending the postharvest life of many crops while reducing moisture loss, respiration, ethylene production, ripening, softening, controlling the decay, and maintaining fruit quality, ...
DOI:
10.1016/j.scienta.2021.110647

8. Biocontrol Potential of Chitin and Chitosan Extracted from Black Soldier Fly Pupal Exuviae against Bacterial Wilt of Tomato

Author:
Violah Jepkogei Kemboi; Carolyne Kipkoech; Moses Njire; Samuel Were; Mevin Kiprotich Lagat; Francis Ndwiga; John Mwibanda Wesonga; Chrysantus Mbi Tanga
Source:
Microorganisms 2022 v.10 no.1 pp. -
ISSN:
2076-2607
Subject:
Hermetia illucens; Ralstonia solanacearum; bacterial wilt; biological control; chitin; chitosan; disease incidence; disease severity; integrated pest management; integument; pathogenicity; pupae; raw materials; soil; tomatoes
Abstract:
... Globally, Ralstonia solanacearum (Smith) is ranked one of the most destructive bacterial pathogens inducing rapid and fatal wilting symptoms on tomatoes. Yield losses on tomatoes vary from 0 to 91% and most control measures are unaffordable to resource-poor farmers. This study investigated the antimicrobial activities of chitin and chitosan extracted from black soldier fly (BSF) pupal exuviae agai ...
DOI:
10.3390/microorganisms10010165

9. Biophysical characterization of the recombinant chitinase chi18-5 with potential biotechnological interest

Author:
Martín Eduardo Villanueva; María Angel da Silva; José Luis Barra; Guillermo Gabriel Montich; Ismael Dario Bianco; Silvina R. Salinas
Source:
Applied microbiology and biotechnology 2022 v.106 no.3 pp. 1185-1197
ISSN:
0175-7598
Subject:
Fourier transform infrared spectroscopy; Trichoderma atroviride; Trichoderma harzianum; biotechnology; chitin; chitinase; chitooligosaccharides; chitosan; circular dichroism spectroscopy; databases; denaturation; enzyme activity; fluorescence; fungi; hydrogen; pH; temperature
Abstract:
... Chitinase chi18-5 is an enzyme able to hydrolyze chitin and chitosan producing chitooligosaccharides (COS) of potential technological interest. chi18-5 is produced naturally by the fungus Trichoderma atroviride. It belongs to the glycosyl hydrolase (GH) family 18 of the Carbohydrate Active Enzyme (CAZy) database and it has 83% identity compared to the well-characterized chi42 of Trichoderma harzia ...
DOI:
10.1007/s00253-022-11782-9

10. Blue is the new green: Valorization of crustacean waste

Author:
Juliana L. Vidal; Tony Jin; Edmond Lam; Francesca Kerton; Audrey Moores
Source:
Current research in green and sustainable chemistry 2022 v.5 pp. 100330
ISSN:
2666-0865
Subject:
Crustacea; biomass; biorefining; calcium carbonate; chitin; chitosan; green chemistry; human health; research; sustainable development; wastes
Abstract:
... Every year, large amounts of marine biomass waste are generated around the globe. In the case of crustaceans, an opportunity is loss to convert these chemically rich streams into important and industrially relevant materials (e.g., chitin, chitosan, calcium carbonate, proteins, and other nitrogen-containing compounds) as these residues are often landfilled or directly discarded in the environment. ...
DOI:
10.1016/j.crgsc.2022.100330

11. Characterization of Thermotolerant Chitinase from the Strain Cohnella sp. IB P-192 and Its Application for the Production of Bioactive Chitosan Oligomers

Author:
E. A. Gilvanova; G. E. Aktuganov; V. R. Safina; P. Yu. Milman; S. A. Lopatin; A. I. Melentiev; N. F. Galimzianova; L. Yu. Kuzmina; T. F. Boyko
Source:
Applied biochemistry and microbiology 2022 v.58 no.2 pp. 143-154
ISSN:
0003-6838
Subject:
antifungal properties; chitin; chitinase; chitosan; chromatography; culture media; enzyme kinetics; heat tolerance; hydrolysis; hydrophobicity; microbiology; molecular weight; pH; polyacrylamide gel electrophoresis; polysorbates; sorption; temperature; thermal stability; ultrafiltration
Abstract:
... Thermostable exochitinase was purified from a culture medium of a moderately thermophilic strain Cohnella sp. IB-P192 via ultrafiltration, affinity sorption, and hydrophobic chromatography and was then characterized. Enzyme synthesis was induced by colloidal chitin from carb shells. It reached the highest level at 50°C in 72 h of submerged cultivation. The molecular weight of the purified chitinas ...
DOI:
10.1134/S0003683822020077

12. Chemically enhanced primary treatment of dairy wastewater using chitosan obtained from shrimp wastes: optimization using a Doehlert matrix design

Author:
Gustavo Lopes Muniz; Alisson Carraro Borges; Teresa Cristina Fonseca da Silva; Rafael Oliveira Batista; Simone Ramos de Castro
Source:
Environmental technology 2022 v.43 no.2 pp. 237-254
ISSN:
1479-487X
Subject:
Fourier transform infrared spectroscopy; air; chitin; chitosan; coagulants; environmental technology; neutralization; pH; shrimp; shrimp shells; sludge; turbidity; wastewater; wastewater treatment; water pollution; zeta potential
Abstract:
... Dairy operations generate large volumes of polluted wastewater that require treatment prior to discharge. Chemically enhanced primary treatment (CEPT) is a widely utilized wastewater treatment strategy; but it requires the use of non-biodegradable coagulants that can lead to toxic-byproducts. In this study, chitin from shrimp shell waste is extracted and converted into chitosan. Chitosan was demon ...
DOI:
10.1080/09593330.2020.1783372

13. Chitin and Chitosan: Prospective Biomedical Applications in Drug Delivery, Cancer Treatment, and Wound Healing

Author:
Parnian Baharlouei; Azizur Rahman
Source:
Marine drugs 2022 v.20 no.7 pp. -
ISSN:
1660-3397
Subject:
biocompatibility; biodegradability; cancer therapy; chitin; chitosan; collagen; drug delivery systems; epithelium; fibroblasts; nanobiotechnology
Abstract:
... Chitin and its derivative chitosan are highly abundant polymers in nature, appearing in both the shells and exoskeletons of various marine and non-marine species. Since they possess favorable properties, such as biocompatibility, biodegradability, non-toxicity, and non-immunogenicity, they have gained recent attention due to their enormous potential biomedical applications. The polycationic surfac ...
DOI:
10.3390/md20070460

14. Chitin and derivative chitosan-based structures — Preparation strategies aided by deep eutectic solvents: A review

Author:
Mohammad Khajavian; Vahid Vatanpour; Roberto Castro-Muñoz; Grzegorz Boczkaj
Source:
Carbohydrate polymers 2022 v.275 pp. 118702
ISSN:
0144-8617
Subject:
biopolymers; chitin; chitosan; industrialization; molecular weight; nanocrystals; nanofibers; plasticity; solvents
Abstract:
... The high molecular weight of chitin, as a biopolymer, challenges its extraction due to its insolubility in the solvents. Also, chitosan, as the N-deacetylated form of chitin, can be employed as a primary material for different industries. The low mechanical stability and poor plasticity of chitosan films, as a result of incompatible interaction between chitosan and the used solvent, have limited i ...
DOI:
10.1016/j.carbpol.2021.118702

15. Chitin derivatives ameliorate DSS-induced ulcerative colitis by changing gut microbiota and restoring intestinal barrier function

Author:
Zewen Mei; Xingxi Huang; Heng Zhang; Danyi Cheng; Xin Xu; Mingyue Fang; Jutuan Hu; Yangyang Liu; Yunxiang Liang; Yuxia Mei
Source:
International journal of biological macromolecules 2022 v.202 pp. 375-387
ISSN:
0141-8130
Subject:
body weight changes; chitin; chitooligosaccharides; chitosan; colon; dextran; food intake; glucosamine; inducible nitric oxide synthase; interleukin-10; interleukin-6; intestinal microorganisms; myeloperoxidase; protective effect; sodium sulfate; tight junctions; ulcerative colitis
Abstract:
... Chitin derivatives (CDs), including chitosan (CS), chitooligosaccharides (COS), and glucosamine (GlcN), were administrated in dextran sodium sulfate (DSS)-induced ulcerative colitis (UC) mice. UC symptoms such as body weight loss, reduced food intake, and increased disease activity index were relieved (except GlcNL group). CDs (except GlcNL) exerted a strong protective effect on colon length and c ...
DOI:
10.1016/j.ijbiomac.2022.01.049

16. Chitooligosaccharides production from shrimp chaff in chitosanase cell surface display system

Author:
Yanli Chen; Zhenmin Ling; Tursunay Mamtimin; Aman Khan; Liang Peng; Jinfeng Yang; Gohar Ali; Tuoyu Zhou; Qing Zhang; Jing Zhang; Xiangkai Li
Source:
Carbohydrate polymers 2022 v.277 pp. 118894
ISSN:
0144-8617
Subject:
Acetobacter; Bacillus subtilis; Escherichia coli; ambient temperature; biopolymers; biorefining; chaff; chitin; chitooligosaccharides; chitosan; chitosanase; enzyme activity; ethanol; fermentation; glucose; hydrolysis; shrimp; yeasts
Abstract:
... Chitin refers to a natural biopolymer, which is economically significant to next-generation biorefineries. In this study, a novel high-yield method with cell surface-display chitosanase (CHI-1) was built to produce chitooligosaccharides (COS) from shrimp chaff through the co-fermentation in the presence of Bacillus subtilis and Acetobacter sp. Under the optimized co-fermentation conditions (5 g/L ...
DOI:
10.1016/j.carbpol.2021.118894

17. Chitosan Based Nanoformulation for Sustainable Agriculture with Special Reference to Abiotic Stress: A Review

Author:
Akash Hidangmayum; Padmanabh Dwivedi
Source:
Journal of polymers and the environment 2022 v.30 no.4 pp. 1264-1283
ISSN:
1566-2543
Subject:
abiotic stress; agricultural productivity; antimicrobial properties; biocompatibility; biodegradability; cellulose; chitin; chitosan; climate change; drug delivery systems; encapsulation; environment; environmental hazards; nutrition; plant growth; sustainable agriculture
Abstract:
... Chitosan is a naturally occurring biological macromolecule and second most abundant polysaccharide next to cellulose, derived from deacetylation of chitin. Due to its biocompatibility, biodegradability, nontoxic and broad spectrum of antimicrobial activity, it has become an important field of drug delivery system study. With the advancement in nanotechnology, chitosan based nanoformulations have s ...
DOI:
10.1007/s10924-021-02296-y

18. Chitosan Production by Fungi: Current State of Knowledge, Future Opportunities and Constraints

Author:
Silvia Crognale; Cristina Russo; Maurizio Petruccioli; Alessandro D’Annibale
Source:
Fermentation 2022 v.8 no.2 pp. -
ISSN:
2311-5637
Subject:
bioprocessing; chitin; chitosan; circular economy; fermentation; fungi; liquids; process control; shellfish
Abstract:
... Conventionally, the commercial supply of chitin and chitosan relies on shellfish wastes as the extraction sources. However, the fungal sources constitute a valuable option, especially for biomedical and pharmaceutical applications, due to the batch-to-batch unsteady properties of chitin and chitosan from conventional ones. Fungal production of these glycans is not affected by seasonality enables a ...
DOI:
10.3390/fermentation8020076

19. Chitosan chemistry review for living organisms encapsulation

Author:
Lorelei Meyer-Déru; Ghislain David; Remi Auvergne
Source:
Carbohydrate polymers 2022 v.295 pp. 119877
ISSN:
0144-8617
Subject:
active ingredients; bioadhesives; biodegradability; chitin; chitosan; crosslinking; habitats; microencapsulation
Abstract:
... Microencapsulation is an emerging process in which an active substance is entrapped in a homogeneous or heterogeneous matrix to form capsules. This technique allows reducing the adverse effects of the external environment on encapsulated compounds, ensuring their stability through manipulation and transport besides enabling their controlled release. Microencapsulation is particularly suitable to p ...
DOI:
10.1016/j.carbpol.2022.119877

20. Chitosan isolated from black soldier flies Hermetia illucens: Structure and enzymatic hydrolysis

Author:
Yong Hyun Lee; Seong Cheol Kim; Kee Dal Nam; Tae Hoon Kim; Byung Ok Jung; Yong-Il Park; Andriy Synytsya; Jae Kweon Park
Source:
Process biochemistry 2022 v.118 pp. 171-181
ISSN:
1359-5113
Subject:
Fourier transform infrared spectroscopy; Hermetia illucens; antioxidant activity; chemical structure; chemical treatment; chitin; chitosan; desorption; enzymatic hydrolysis; gel chromatography; molecular weight; nuclear magnetic resonance spectroscopy
Abstract:
... This study aims to elucidate the biochemical properties of chitosan isolated and purified from larvae of black soldier flies Hermetia illucens to discover and utilize new eco-friendly chitin material. The productivity of chitin obtained from the larvae of black soldier flies H. illucens was found to be approximately 5.00 ± 0.002%. These chitins were converted to chitosan by chemical treatment with ...
DOI:
10.1016/j.procbio.2022.04.020