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Lin X, Peng N, Huang P, Xiong Q, Lin H, Tang C, Tsauo C, Peng L. Potential of quaternized chitins in peri-implantitis treatment: In vitro evaluation of antibacterial, anti-inflammatory, and antioxidant properties. Int J Biol Macromol 2024; 272:132612. [PMID: 38795897 DOI: 10.1016/j.ijbiomac.2024.132612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 04/03/2024] [Accepted: 05/22/2024] [Indexed: 05/28/2024]
Affiliation(s)
- Xiqiu Lin
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Na Peng
- Key Laboratory of Coal Conversion and New Carbon Materials of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, Hubei 430081, China
| | - Peijun Huang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Qiuchan Xiong
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Huishan Lin
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Chenxi Tang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Chialing Tsauo
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Sichuan 610041, China
| | - Lin Peng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China.
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2
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Ouyang E, Wu M, He W, Liu H, Gui M, Yang H. Chitin/calcite composite extracted from shell waste as a low-cost adsorbent for removal of tetracycline and ciprofloxacin: Effects and mechanisms. CHEMOSPHERE 2024; 353:141503. [PMID: 38382718 DOI: 10.1016/j.chemosphere.2024.141503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 02/23/2024]
Abstract
Recently, water contamination caused by the misuse of antibiotics has become a growing concern. In this study, an economical chitin/calcite composite (CCA) was extracted from crab shell waste, and the effects and mechanisms of its removal of ciprofloxacin (CIP) and tetracycline (TC) from aqueous solution were investigated. The functional groups of chitin and the metal phase of calcite gave CCA the ability to remove antibiotics. Experiments on kinetics, isothermal adsorption, thermodynamics, co-removal, and reusability were conducted to systematically explore the adsorption performances of CCA toward antibiotics. The pseudo-second-order (FSO) and Langmuir models suited the data obtained from experiments best and displayed a good fit for the chemisorption and a certain homogeneity of adsorption sites. At 25 °C, the maximum adsorption capacities (Qmax) toward CIP and TC were 228.86 and 150.76 mg g-1, respectively. The adsorption mechanisms of CCA with TC and CIP are pH dependent since pH can affect the surface charge of CCA and the form in which CIP and TC are existing. The X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) demonstrated that the keto-O and carboxyl groups of CIP and the carbonyl, hydroxyl, and amido groups of TC could be responsible for the binding with the calcite and the functional groups of chitin through surface complexation, cation bridge and hydrogen bonding.
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Affiliation(s)
- Erming Ouyang
- School of Resources & Environment, Nanchang University, Nanchang, 330031, Jiangxi, China; Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang University, Nanchang, 330031, Jiangxi, China
| | - Mingming Wu
- School of Resources & Environment, Nanchang University, Nanchang, 330031, Jiangxi, China
| | - Wanyuan He
- School of Resources & Environment, Nanchang University, Nanchang, 330031, Jiangxi, China
| | - Haiyang Liu
- School of Resources & Environment, Nanchang University, Nanchang, 330031, Jiangxi, China
| | - Mengyao Gui
- School of Resources & Environment, Nanchang University, Nanchang, 330031, Jiangxi, China
| | - Hongwei Yang
- School of Resources & Environment, Nanchang University, Nanchang, 330031, Jiangxi, China; Engineering Research Center of Watershed Carbon Neutralization, Ministry of Education, Nanchang University, China.
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3
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Kadokawa JI. An overview on acylation methods of α-chitin. Int J Biol Macromol 2024; 262:130166. [PMID: 38360241 DOI: 10.1016/j.ijbiomac.2024.130166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/28/2024] [Accepted: 02/11/2024] [Indexed: 02/17/2024]
Abstract
This article overviews the acylation methods of α-chitin developed over the last four decades. The acylation of polysaccharides has been identified as a useful approach for conferring properties such as thermoplasticity. Owing to the poor solubility of α-chitin, its acylation using acid anhydrides and acyl chlorides has been traditionally investigated under heterogeneous conditions in strong acidic media. Although chitin chains depolymerize under acidic conditions, the resultant derivatives exhibit certain properties and functions. Solvents, such as LiCl/N,N-dimethyladcetamide, ionic liquids, and deep eutectic solvents, are suitable for α-chitin dissolution; therefore, acylation methods for α-chitin under homogeneous conditions have been developed using these solvents as reaction media. The functional materialization of the resultant derivatives was achieved by introducing appropriate substituents and controlling their ratios.
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Affiliation(s)
- Jun-Ichi Kadokawa
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan.
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4
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Ozel N, Elibol M. Chitin and chitosan from mushroom (Agaricus bisporus) using deep eutectic solvents. Int J Biol Macromol 2024; 262:130110. [PMID: 38346624 DOI: 10.1016/j.ijbiomac.2024.130110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 01/19/2024] [Accepted: 02/09/2024] [Indexed: 02/17/2024]
Abstract
In this study, chitin was isolated from a mushroom (Agaricus bisporus) using deep eutectic solvents, choline chloride: acetic acid (CCAA), choline chloride:lactic acid (CCLA) and choline chloride:glycerol (CCG). According to the results, three DES systems were also useful for the isolation of chitin from mushrooms. The deproteinization efficiency was 84.25 %. The degree of deacetylation of chitin isolated by microwave-assisted extraction using CCAA was 69 %. This result was promising to produce chitosan in a one-step, base-free process using deep eutectic solvents. FTIR, XRD, SEM and XPS were used to analyse the physicochemical properties of the chitin.
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Affiliation(s)
- Nihal Ozel
- Ege University, Bioengineering Department, Bornova, Izmir, Turkey
| | - Murat Elibol
- Ege University, Bioengineering Department, Bornova, Izmir, Turkey.
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5
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Xue H, Ju Y, Ye X, Dai M, Tang C, Liu L. Construction of intelligent drug delivery system based on polysaccharide-derived polymer micelles: A review. Int J Biol Macromol 2024; 254:128048. [PMID: 37967605 DOI: 10.1016/j.ijbiomac.2023.128048] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 10/23/2023] [Accepted: 11/10/2023] [Indexed: 11/17/2023]
Abstract
Micelles are nanostructures developed via the spontaneous assembly of amphiphilic polymers in aqueous systems, which possess the advantages of high drug stability or active-ingredient solubilization, targeted transport, controlled release, high bioactivity, and stability. Polysaccharides have excellent water solubility, biocompatibility, and degradability, and can be modified to achieve a hydrophobic core to encapsulate hydrophobic drugs, improve drug biocompatibility, and achieve regulated delivery of the loaded drug. Micelles drug delivery systems based on polysaccharides and their derivatives show great potential in the biomedical field. This review discusses the principles of self-assembly of amphiphilic polymers and the formation of micelles; the preparation of amphiphilic polysaccharides is described in detail, and an overview of common polysaccharides and their modifications is provided. We focus on the review of strategies for encapsulating drugs in polysaccharide-derived polymer micelles (PDPMs) and building intelligent drug delivery systems. This review provides new research directions that will help promote future research and development of PDPMs in the field of drug carriers.
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Affiliation(s)
- Huaqian Xue
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China; School of Pharmacy, Ningxia Medical University, Ningxia 750004, China
| | - Yikun Ju
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China; The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Xiuzhi Ye
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China
| | - Minghai Dai
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China
| | - Chengxuan Tang
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China.
| | - Liangle Liu
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China.
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6
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Abstract
Mixed chitin esters, that is, chitin benzoate stearates, exhibiting thermoplasticity, were synthesized by the acylation of chitin using benzoyl and stearoyl chlorides in the presence of pyridine and N,N-dimethyl-4-aminopyridine for 1 h + 24 h at 100 °C in an ionic liquid, 1-allyl-3-methylimidazolium bromide. IR and 1H NMR spectroscopic analyses confirmed the formation of the desired chitin benzoate stearates. Powder X-ray diffraction analysis of the products indicated that the crystalline structures of the chitin main-chains and stearoyl side-chains were strongly affected by the benzoyl/stearoyl substituent ratios. Introducing a small number of benzoyl groups, in addition to a large ratio of stearoyl groups, contributed to disrupting the intrinsic chitin crystals and enabling the chitin main chains and stearoyl side chains to form regularly controlled layered and parallel arrays, respectively. The resulting products exhibited meting points, associated with regular stearoyl packings, and formed melt-pressed films during the melt-pressing process. These results suggest that chitin benzoate stearates with appropriate benzoyl/stearoyl substituent ratios exhibit thermoplasticity.
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Affiliation(s)
- Yuki Shigenobu
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Aoi Nakashima
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Jun-Ichi Kadokawa
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
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Kadokawa JI. Hydrogelation from Self-Assembled and Scaled-Down Chitin Nanofibers by the Modification of Highly Polar Substituents. Gels 2023; 9:432. [PMID: 37367103 DOI: 10.3390/gels9060432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 05/09/2023] [Accepted: 05/22/2023] [Indexed: 06/28/2023] Open
Abstract
Chitin nanofibers (ChNFs) with a bundle structure were fabricated via regenerative self-assembly at the nanoscale from a chitin ion gel with an ionic liquid using methanol. Furthermore, the bundles were disentangled by partial deacetylation under alkaline conditions, followed by cationization and electrostatic repulsion in aqueous acetic acid to obtain thinner nanofibers called scaled-down ChNFs. This review presents a method for hydrogelation from self-assembled and scaled-down ChNFs by modifying the highly polar substituents on ChNFs. The modification was carried out by the reaction of amino groups on ChNFs, which were generated by partial deacetylation, with reactive substituent candidates such as poly(2-oxazoline)s with electrophilic living propagating ends and mono- and oligosaccharides with hemiacetallic reducing ends. The substituents contributed to the formation of network structures from ChNFs in highly polar dispersed media, such as water, to produce hydrogels. Moreover, after the modification of the maltooligosaccharide primers on ChNFs, glucan phosphorylase-catalyzed enzymatic polymerization was performed from the primer chain ends to elongate the amylosic graft chains on ChNFs. The amylosic graft chains formed double helices between ChNFs, which acted as physical crosslinking points to construct network structures, giving rise to hydrogels.
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Affiliation(s)
- Jun-Ichi Kadokawa
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
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Wang Z, Tang P, Chen S, Xing Y, Yin C, Feng J, Jiang F. Fully biobased sustainable elastomers derived from chitin, lignin, and plant oil via grafting strategy and Schiff-base chemistry. Carbohydr Polym 2023; 305:120577. [PMID: 36737210 DOI: 10.1016/j.carbpol.2023.120577] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/05/2023] [Accepted: 01/09/2023] [Indexed: 01/12/2023]
Abstract
With the dramatically increased environmental problems, the rational design of sustainable polymers from renewable feedstocks opens new avenues to reduce the huge pollution impact. The major challenge for sustainable polymers is the decreased mechanical performance compared to that of petroleum-based materials. In this work, fully biobased sustainable elastomers were developed by integrating renewable chitin, lignin, and plant oil into one macromolecule, in which chitin was chosen as the rigid backbone, while a lignin-derived monomer vanillin acrylate (VA) and a plant oil-based monomer lauryl acrylate (LA) were selected as the hard and soft segments for the grafted side chains. A series of Chitin-graft-poly(vanillin acrylate-co-lauryl acrylate) (Chitin-g-P(VA-co-LA)) copolymers with varied feed ratios and chitin contents were synthesized by using reversible addition-fragmentation chain transfer (RAFT) polymerization as an effective grafting strategy. In addition, a dynamic cross-linked network was incorporated via Schiff-base reaction to improve the macroscopic behavior of such kind of chitin graft elastomers. These sustainable elastomers are mechanically strong and show excellent reprocessablity, as well as outstanding UV-blocking property. This strategy is versatile and can inspire the further development of fully biobased sustainable materials from natural resources.
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Affiliation(s)
- Zhiqiang Wang
- Biomass Molecular Engineering Center, Anhui Provincial Engineering Center for High Performance Biobased Nylons, Department of Materials Science and Engineering, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Pengfei Tang
- Biomass Molecular Engineering Center, Anhui Provincial Engineering Center for High Performance Biobased Nylons, Department of Materials Science and Engineering, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Shuaishuai Chen
- Biomass Molecular Engineering Center, Anhui Provincial Engineering Center for High Performance Biobased Nylons, Department of Materials Science and Engineering, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Yuxian Xing
- Biomass Molecular Engineering Center, Anhui Provincial Engineering Center for High Performance Biobased Nylons, Department of Materials Science and Engineering, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Chuantao Yin
- Biomass Molecular Engineering Center, Anhui Provincial Engineering Center for High Performance Biobased Nylons, Department of Materials Science and Engineering, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Jiajun Feng
- Biomass Molecular Engineering Center, Anhui Provincial Engineering Center for High Performance Biobased Nylons, Department of Materials Science and Engineering, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Feng Jiang
- Biomass Molecular Engineering Center, Anhui Provincial Engineering Center for High Performance Biobased Nylons, Department of Materials Science and Engineering, School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, Anhui 230036, China.
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9
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Ashrafizadeh M, Hushmandi K, Mirzaei S, Bokaie S, Bigham A, Makvandi P, Rabiee N, Thakur VK, Kumar AP, Sharifi E, Varma RS, Aref AR, Wojnilowicz M, Zarrabi A, Karimi‐Maleh H, Voelcker NH, Mostafavi E, Orive G. Chitosan-based nanoscale systems for doxorubicin delivery: Exploring biomedical application in cancer therapy. Bioeng Transl Med 2023; 8:e10325. [PMID: 36684100 PMCID: PMC9842052 DOI: 10.1002/btm2.10325] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/12/2022] [Accepted: 03/17/2022] [Indexed: 02/06/2023] Open
Abstract
Green chemistry has been a growing multidisciplinary field in recent years showing great promise in biomedical applications, especially for cancer therapy. Chitosan (CS) is an abundant biopolymer derived from chitin and is present in insects and fungi. This polysaccharide has favorable characteristics, including biocompatibility, biodegradability, and ease of modification by enzymes and chemicals. CS-based nanoparticles (CS-NPs) have shown potential in the treatment of cancer and other diseases, affording targeted delivery and overcoming drug resistance. The current review emphasizes on the application of CS-NPs for the delivery of a chemotherapeutic agent, doxorubicin (DOX), in cancer therapy as they promote internalization of DOX in cancer cells and prevent the activity of P-glycoprotein (P-gp) to reverse drug resistance. These nanoarchitectures can provide co-delivery of DOX with antitumor agents such as curcumin and cisplatin to induce synergistic cancer therapy. Furthermore, co-loading of DOX with siRNA, shRNA, and miRNA can suppress tumor progression and provide chemosensitivity. Various nanostructures, including lipid-, carbon-, polymeric- and metal-based nanoparticles, are modifiable with CS for DOX delivery, while functionalization of CS-NPs with ligands such as hyaluronic acid promotes selectivity toward tumor cells and prevents DOX resistance. The CS-NPs demonstrate high encapsulation efficiency and due to protonation of amine groups of CS, pH-sensitive release of DOX can occur. Furthermore, redox- and light-responsive CS-NPs have been prepared for DOX delivery in cancer treatment. Leveraging these characteristics and in view of the biocompatibility of CS-NPs, we expect to soon see significant progress towards clinical translation.
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Affiliation(s)
- Milad Ashrafizadeh
- Faculty of Engineering and Natural SciencesSabanci University, Üniversite CaddesiTuzla, IstanbulTurkey
| | - Kiavash Hushmandi
- Department of Food Hygiene and Quality Control, Division of Epidemiology, Faculty of Veterinary MedicineUniversity of TehranTehranIran
| | - Sepideh Mirzaei
- Department of Biology, Faculty of ScienceIslamic Azad University, Science and Research BranchTehranIran
| | - Saied Bokaie
- Department of Food Hygiene and Quality Control, Division of Epidemiology, Faculty of Veterinary MedicineUniversity of TehranTehranIran
| | - Ashkan Bigham
- Institute of Polymers, Composites and Biomaterials ‐ National Research Council (IPCB‐CNR)NaplesItaly
| | - Pooyan Makvandi
- Istituto Italiano di Tecnologia, Center for Materials InterfacesPontedera, PisaItaly
| | - Navid Rabiee
- School of Engineering, Macquarie UniversitySydneyNew South WalesAustralia
| | - Vijay Kumar Thakur
- School of EngineeringUniversity of Petroleum & Energy Studies (UPES)DehradunUttarakhandIndia
- Biorefining and Advanced Materials Research Center, Scotland's Rural College (SRUC)EdinburghUK
| | - Alan Prem Kumar
- NUS Centre for Cancer Research (N2CR)Yong Loo Lin School of Medicine, National University of SingaporeSingaporeSingapore
- Department of PharmacologyYong Loo Lin School of Medicine, National University of SingaporeKent RidgeSingapore
| | - Esmaeel Sharifi
- Department of Tissue Engineering and BiomaterialsSchool of Advanced Medical Sciences and Technologies, Hamadan University of Medical SciencesHamadanIran
| | - Rajender S. Varma
- Regional Center of Advanced Technologies and MaterialsCzech Advanced Technology and Research Institute, Palacky UniversityOlomoucCzech Republic
| | - Amir Reza Aref
- Belfer Center for Applied Cancer Science, Dana‐Farber Cancer Institute, Harvard Medical SchoolBostonMassachusettsUSA
- Xsphera Biosciences Inc.BostonMassachusettsUSA
| | - Marcin Wojnilowicz
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) ManufacturingClaytonVictoriaAustralia
- Monash Institute of Pharmaceutical SciencesParkvilleVictoriaAustralia
| | - Ali Zarrabi
- Department of Biomedical Engineering, Faculty of Engineering and Natural SciencesIstinye UniversityIstanbulTurkey
| | - Hassan Karimi‐Maleh
- School of Resources and Environment, University of Electronic Science and Technology of ChinaChengduPR China
- Department of Chemical EngineeringQuchan University of TechnologyQuchanIran
- Department of Chemical Sciences, University of Johannesburg, Doornfontein CampusJohannesburgSouth Africa
| | - Nicolas H. Voelcker
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) ManufacturingClaytonVictoriaAustralia
- Monash Institute of Pharmaceutical SciencesParkvilleVictoriaAustralia
- Melbourne Centre for NanofabricationVictorian Node of the Australian National Fabrication FacilityClaytonVictoriaAustralia
| | - Ebrahim Mostafavi
- Stanford Cardiovascular Institute, Stanford University School of MedicineStanfordCaliforniaUSA
- Department of MedicineStanford University School of MedicineStanfordCaliforniaUSA
| | - Gorka Orive
- NanoBioCel Research Group, School of PharmacyUniversity of the Basque Country (UPV/EHU)Vitoria‐GasteizSpain
- University Institute for Regenerative Medicine and Oral Implantology–UIRMI(UPV/EHU‐Fundación Eduardo Anitua)Vitoria‐GasteizSpain
- Bioaraba, NanoBioCel Research GroupVitoria‐GasteizSpain
- Singapore Eye Research InstituteSingapore
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10
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Pellis A, Guebitz GM, Nyanhongo GS. Chitosan: Sources, Processing and Modification Techniques. Gels 2022; 8:gels8070393. [PMID: 35877478 PMCID: PMC9322947 DOI: 10.3390/gels8070393] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 06/11/2022] [Accepted: 06/19/2022] [Indexed: 02/07/2023] Open
Abstract
Chitosan, a copolymer of glucosamine and N-acetyl glucosamine, is derived from chitin. Chitin is found in cell walls of crustaceans, fungi, insects and in some algae, microorganisms, and some invertebrate animals. Chitosan is emerging as a very important raw material for the synthesis of a wide range of products used for food, medical, pharmaceutical, health care, agriculture, industry, and environmental pollution protection. This review, in line with the focus of this special issue, provides the reader with (1) an overview on different sources of chitin, (2) advances in techniques used to extract chitin and converting it into chitosan, (3) the importance of the inherent characteristics of the chitosan from different sources that makes them suitable for specific applications and, finally, (4) briefly summarizes ways of tailoring chitosan for specific applications. The review also presents the influence of the degree of acetylation (DA) and degree of deacetylation (DDA), molecular weight (Mw) on the physicochemical and biological properties of chitosan, acid-base behavior, biodegradability, solubility, reactivity, among many other properties that determine processability and suitability for specific applications. This is intended to help guide researchers select the right chitosan raw material for their specific applications.
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Affiliation(s)
- Alessandro Pellis
- Department of Chemistry and Industrial Chemistry, University of Genova, Via Dodecaneso 31, 16146 Genova, Italy;
| | - Georg M. Guebitz
- Department of Agrobiotechnology, IFA-Tulln, Institute of Environmental Biotechnology, University of Natural Ressources and Life Sciences, 1180 Vienna, Austria;
| | - Gibson Stephen Nyanhongo
- Department of Agrobiotechnology, IFA-Tulln, Institute of Environmental Biotechnology, University of Natural Ressources and Life Sciences, 1180 Vienna, Austria;
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, Johannesburg P.O. Box 17011, South Africa
- Correspondence:
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11
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Nakashima A, Kohori K, Yamamoto K, Kadokawa JI. Synthesis of thermoplastic chitin hexanoate-graft-poly(ε-caprolactone). Carbohydr Polym 2022; 280:119024. [PMID: 35027126 DOI: 10.1016/j.carbpol.2021.119024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 11/30/2021] [Accepted: 12/14/2021] [Indexed: 11/24/2022]
Abstract
Herein, we report that chitin hexanoate-graft-poly(ε-caprolactone) (ChHex-g-PCL) is thermoplastic, as confirmed by the formation of a melt-pressed film. Chitin hexanoates with degrees of substitution (DSs) of 1.4-1.8 and bearing free hydroxy groups were first prepared by the hexanoylation of chitin using adjusted feed equivalents of hexanoyl chloride in the presence of pyridine and N,N-dimethyl-4-aminopyridine in 1-allyl-3-methylimidazolium bromide, an ionic liquid. Surface-initiated ring-opening graft polymerization of ε-caprolactone from the hydroxy groups of the chitin hexanoates was conducted in the presence of tin(II) 2-ethylhexanoate as the catalyst at 100 °C to produce (ChHex-g-PCL)s. The feed equivalent of the catalyst, reaction time, and DS value were found to affect the molar substitution and degree of polymerization of the PCL graft chains. Longer PCL graft chains formed their crystalline structures and the (ChHex-g-PCL)s largely contained uncrystallized chitin chains. Accordingly, these (ChHex-g-PCL)s exhibited melting points associated with the PCL graft chains, leading to thermoplasticity.
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Affiliation(s)
- Aoi Nakashima
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Kaho Kohori
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Kazuya Yamamoto
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Jun-Ichi Kadokawa
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan.
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12
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Kohori K, Hirayama H, Yamamoto K, Kadokawa JI. Synthesis of mixed chitin esters with long fatty and bulky acyl substituents in ionic liquid. Int J Biol Macromol 2021; 190:763-768. [PMID: 34530034 DOI: 10.1016/j.ijbiomac.2021.09.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/25/2021] [Accepted: 09/09/2021] [Indexed: 10/20/2022]
Abstract
This study revealed that mixed chitin esters with long fatty and bulky acyl substituents were efficiently synthesized by acylation using acyl chlorides in the presence of pyridine and N,N-dimethyl-4-aminopyridine in an ionic liquid, 1-allyl-3-methylimidazolium bromide (AMIMBr), at 100 °C for 24 h. A stearoyl group was selected as the first substituent, which was combined with different long fatty and bulky acyl groups as the second substituents. In addition to IR analysis of the products, which suggested progress of the acylation, 1H NMR measurement was allowed for structural confirmation for high degrees of substitution (DSs) of the desired derivatives in CDCl3/CF3CO2H solvents. Crystalline structures and thermal property of the products were evaluated by powder X-ray diffraction and differential scanning calorimetry measurements, respectively. All the products showed film formability by casting from solutions in chloroform or chloroform/trifluoroacetic acid solvents. The occurrence of halogen exchange between acyl chlorides and AMIMBr in the present system was speculated to produce highly reactive acyl bromides in situ, which efficiently reacted with hydroxy groups in chitin to obtain high DS products.
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Affiliation(s)
- Kaho Kohori
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Hiroki Hirayama
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Kazuya Yamamoto
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Jun-Ichi Kadokawa
- Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan.
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A review on the potential uses of deep eutectic solvents in chitin and chitosan related processes. Carbohydr Polym 2021; 262:117942. [PMID: 33838819 DOI: 10.1016/j.carbpol.2021.117942] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 03/12/2021] [Accepted: 03/12/2021] [Indexed: 11/23/2022]
Abstract
Ionic liquids (ILs) as well as closely related deep eutectic solvents (DESs) have been the most promising discoveries in the "Green Chemistry" world in recent years as types of solvents. Deep eutectic solvents are received as potential alternatives to the conventional organic solvents with other advantages such as renewability, reusability, biodegradability, nontoxicity, large-scale availability, having very low vapour pressure, low flammability and easy in preparation. Chitin is the second most abundant biopolymers in the nature that can be extracted from many aquatic and terrestrial organisms also some of the microorganisms. Chitin and its derivatives have applications in many fields such as medical, food-beverages, agriculture and cosmetics. This review reports the major contributions of DESs in chitin and chitosan related studies and summarizes recent advances in some applications such as extraction media, bio-film fabrication, nanomaterial preparation, chitosan methylation, chitin dissolution, composite material preparation.
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Mushi NE. A review on native well-preserved chitin nanofibrils for materials of high mechanical performance. Int J Biol Macromol 2021; 178:591-606. [PMID: 33631266 DOI: 10.1016/j.ijbiomac.2021.02.149] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 02/15/2021] [Accepted: 02/19/2021] [Indexed: 01/04/2023]
Abstract
Novel chitin nanofibrils (ChNF) demonstrate excellent mechanical properties due to a long and extended polymer conformation. The current study highlights the importance of preserving ChNFs for stronger nanomaterials. Various chitin sources - crab, lobster, shrimp, squid pen, mushrooms, and insects have been reviewed. We have discussed preparation protocols and the physical properties of ChNF and presented the mechanical performance of nanomaterials. ChNF close to the native state uses fewer chemicals for treatment and shows a higher molar mass, degree of acetylation, crystallinity index, micrometer length, and a smaller diameter (3 nm), making them cheap, eco-friendly, and competitive to cellulose or synthetic fibrils. A highly acetylated or partially deacetylated ChNF forms a stable colloidal suspension, and it is possible to prepare from it strong films, hydrogels, aerogels, foams, polymer matrix nanocomposites, and microfibers. Moreover, it is possible to regenerate, functionalize, or cross-link the ChNFs to improve nanomaterials' mechanical performance. The preparation protocols remain the key to these achievements. However, the chemical techniques are not friendly ecologically and may hydrolytically degrade the chitin. The biological processes using enzymes or microorganisms are much better but still inefficient. Besides, the processing time limits the rapid preparation of the fibrils in the long-term perspective.
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Affiliation(s)
- Ngesa Ezekiel Mushi
- University of Dar es Salaam, College of Engineering and Technology, Department of Mechanical and Industrial Engineering, P.O. Box 35131, Dar es Salaam, Tanzania.
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15
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Chen B, Wu S, Ye Q. Fabrication and characterization of biodegradable KH560 crosslinked chitin hydrogels with high toughness and good biocompatibility. Carbohydr Polym 2021; 259:117707. [PMID: 33673987 DOI: 10.1016/j.carbpol.2021.117707] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 01/07/2021] [Accepted: 01/22/2021] [Indexed: 12/24/2022]
Abstract
Chitin hydrogels have multiple advantages of nontoxicity, biocompatibility, biodegradability, and three-dimensional hydrophilic polymer network structure similar to the macromolecular biological tissue. However, the mechanical strength of chitin hydrogels is relatively weak. Construction of chitin hydrogels with high mechanical strength and good biocompatibility is essential for the successful applications in biomedical field. Herein, we developed double crosslinked chitin hydrogels by dissolving chitin in KOH/urea aqueous solution with freezing-thawing process, then using KH560 as cross-linking agent and coagulating in ethanol solution at low temperature. The obtained chitin/ KH560 (CK) hydrogels displayed good transparency and toughness with compressed nanofibrous network and porous structure woven with chitin nanofibers. Moreover, the optimal CK hydrogels exhibited excellent mechanical properties (σb = 1.92 ± 0.21 Mpa; εb = 71 ± 5 %), high swelling ratio, excellent blood compatibility, biocompatibility and biodegradability, which fulfill the requirements of biomedical materials and showing potential applications in biomedicine.
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Affiliation(s)
- Biao Chen
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, 430071, China
| | - Shuangquan Wu
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, 430071, China.
| | - Qifa Ye
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Wuhan, 430071, China; The Third Xiangya Hospital of Central South University, Research Center of National Health Ministry on Transplantation Medicine Engineering and Technology, Changsha, 410013, China.
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16
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Tsurkan MV, Voronkina A, Khrunyk Y, Wysokowski M, Petrenko I, Ehrlich H. Progress in chitin analytics. Carbohydr Polym 2021; 252:117204. [DOI: 10.1016/j.carbpol.2020.117204] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 09/26/2020] [Accepted: 09/28/2020] [Indexed: 12/25/2022]
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17
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Nanostructured thermosets involving epoxy and poly(ionic liquid)-Containing diblock copolymer. POLYMER 2021. [DOI: 10.1016/j.polymer.2020.123293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Khayrova A, Lopatin S, Varlamov V. Obtaining chitin, chitosan and their melanin complexes from insects. Int J Biol Macromol 2020; 167:1319-1328. [PMID: 33202268 DOI: 10.1016/j.ijbiomac.2020.11.086] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 11/09/2020] [Accepted: 11/12/2020] [Indexed: 12/23/2022]
Abstract
Interest in insects as a source of valuable biologically active substances has significantly increased over the past few years. Insects serve as an alternative source of chitin, which forms up to 40% of their exoskeleton. Chitosan, a deacetylated derivative of chitin, attracts the attention of scientists due to its unique properties (sorption, antimicrobial, film-forming, wound healing). Furthermore, some insect species are unique and can be used to obtain chitin- and chitosan-melanin complexes in the later stages of ontogenesis. Due to the synergistic effect, chitosan and melanin can enhance each other's biological activity, providing a wide range of potential applications.
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Affiliation(s)
- Adelya Khayrova
- Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky prospect, 33, build. 2, 119071 Moscow, Russia.
| | - Sergey Lopatin
- Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky prospect, 33, build. 2, 119071 Moscow, Russia
| | - Valery Varlamov
- Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky prospect, 33, build. 2, 119071 Moscow, Russia
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19
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Wang J, Chen Z, Guan A(Q, Demarquette NR, Naguib HE. Ionic liquids facilitated dispersion of chitin nanowhiskers for reinforced epoxy composites. Carbohydr Polym 2020; 247:116746. [DOI: 10.1016/j.carbpol.2020.116746] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/06/2020] [Accepted: 07/08/2020] [Indexed: 01/09/2023]
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Balitaan JNI, Hsiao CD, Yeh JM, Santiago KS. Innovation inspired by nature: Biocompatible self-healing injectable hydrogels based on modified-β-chitin for wound healing. Int J Biol Macromol 2020; 162:723-736. [PMID: 32553972 DOI: 10.1016/j.ijbiomac.2020.06.129] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 06/10/2020] [Accepted: 06/12/2020] [Indexed: 12/24/2022]
Abstract
Remarkable properties of hydrogels are compromised by failure to recover from damage, bringing their intended functions to an end. To address this, hydrogels can be functionalized with self-healing property to enable them to restore themselves after damage, thus, extending their lifetime. Herein, hydrogels were prepared by cross-linking acrylamide-modified β-chitin (Am-β-Chn) with alginate dialdehyde (ADA) to form Schiff base, showing IR characteristic peak at 1650 cm-1, attributed to the stretching vibration of CN. The dynamic Schiff base and H-bond rendered the double crosslinked hydrogels self-healing as demonstrated by continuous step strain rheology. Characterization of the hydrogels revealed excellent biocompatibility, biodegradability, injectability and self-healing properties. Furthermore, the wound healing property of the hydrogels was investigated in vivo using zebrafish as a model system. Indirect application of Am-β-Chn/ADA hydrogel remarkably led to ~87% wound healing as compared to control which gave ~50%, suggesting that hydrogels are effective in accelerating wound healing. However, a clear understanding of the exact mechanism of its wound healing property remains to be investigated. To the best of our knowledge, this is the first innovation of developing novel double crosslinked Am-β-Chn/ADA hydrogels with both self-healing and accelerated wound healing properties, directly from marine-food wastes.
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Affiliation(s)
- Jolleen Natalie I Balitaan
- The Graduate School, University of Santo Tomas, España Boulevard, Manila 1008, Philippines; Department of Chemistry, College of Science, España Boulevard, Manila 1008, Philippines
| | - Chung-Der Hsiao
- Department of Bioscience Technology, Chung Yuan Christian University, Chung Li 32023, Taiwan, ROC
| | - Jui-Ming Yeh
- Department of Chemistry, Chung Yuan Christian University, Chung Li 32023, Taiwan, ROC; Center for Nanotechnology, Chung Yuan Christian University, Chung Li 32023, Taiwan, ROC; R&D Center for Membrane Technology, Chung Yuan Christian University, Chung Li 32023, Taiwan, ROC
| | - Karen S Santiago
- The Graduate School, University of Santo Tomas, España Boulevard, Manila 1008, Philippines; Department of Chemistry, College of Science, España Boulevard, Manila 1008, Philippines; Research Center for Natural and Applied Sciences, University of Santo Tomas, España Boulevard, Manila 1008, Philippines.
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Florio W, Becherini S, D'Andrea F, Lupetti A, Chiappe C, Guazzelli L. Comparative evaluation of antimicrobial activity of different types of ionic liquids. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109907. [PMID: 31499958 DOI: 10.1016/j.msec.2019.109907] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 06/18/2019] [Accepted: 06/20/2019] [Indexed: 10/26/2022]
Abstract
In order to identify most suitable ionic liquids (ILs) for potential applications in infection prevention and control, in the present study we comparatively evaluated the antimicrobial potency and hemolytic activity of 15 ILs, including 11 previously described and four newly synthesized ILs, using standard microbiological procedures against Gram-positive and Gram-negative bacteria. ILs showing the lowest minimum inhibitory concentration (MIC) were tested for their hemolytic activity. Three ILs characterized by low MIC values and low hemolytic activity, namely 1-methyl-3-dodecylimidazolium bromide, 1-dodecyl-1-methylpyrrolidinium bromide, and 1-dodecyl-1-methylpiperidinium bromide were further investigated to determine their minimum bactericidal concentration (MBC), and their ability to inhibit biofilm formation by Staphylococcus aureus or Pseudomonas aeruginosa. Killing kinetics results revealed that both Gram-positive and Gram-negative bacteria are rapidly killed after exposure to MBC of the selected ILs. Furthermore, the selected ILs efficiently inhibited biofilm formation by S. aureus or P. aeruginosa. To our knowledge, this is the first systematic study investigating the antimicrobial potential of different types of ionic liquids using standard microbiological procedures. In the overall, the selected ILs showed low hemolytic and powerful antimicrobial activity, and efficient inhibition of biofilm formation, especially against S. aureus, suggesting their possible application as anti-biofilm agents.
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Affiliation(s)
- Walter Florio
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Pisa, Italy
| | | | | | - Antonella Lupetti
- Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Università di Pisa, Pisa, Italy.
| | - Cinzia Chiappe
- Dipartimento di Farmacia, Università di Pisa, Pisa, Italy
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Sujka W, Draczynski Z, Kolesinska B, Latanska I, Jastrzebski Z, Rybak Z, Zywicka B. Influence of Porous Dressings Based on Butyric-Acetic Chitin Co-Polymer on Biological Processes In Vitro and In Vivo. MATERIALS 2019; 12:ma12060970. [PMID: 30909574 PMCID: PMC6471426 DOI: 10.3390/ma12060970] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 03/08/2019] [Accepted: 03/19/2019] [Indexed: 01/15/2023]
Abstract
In spite of intensively conducted research allowing for the development of more and more advanced wound dressing materials, there is still a need for dressings that stimulate not only reparative and regenerative processes, but also have a positive effect on infected and/or difficult-to-heal wounds. Porous dressing materials based on butyric-acetic chitin co-polyester containing 90% of butyryl and 10% of acetyl groups (BAC 90/10) can also be included in the group mentioned above. Two types of dressings were obtained by the salt leaching method, i.e. a porous sponge Medisorb R and Medisorb Ag with an antibacterial additive. The aim of the study was to evaluate biological effects of porous Medisorb R and Medisorb Ag dressings under in vitro and in vivo conditions. In an in vitro biodegradation test, no mass loss of Medisorb R dressing was observed within 14 days of incubation in physiological fluids at 37 °C. However, on the basis of the FTIR (Fourier Transform Infrared Spectroscopy) tests, surface degradation of Medisorb R dressing was observed. Additionally, the antibacterial activity of the porous Medisorb Ag dressing containing microsilver as an antibacterial additive was confirmed. The in vivo studies included inflammatory activity, skin irritation and sensitisation tests, as well an assessment of local effect after contact with subcutaneous tissue up to 6 months and skin wounds up to 21 days. In the in vivo tests, the dressings exhibited neither effects of skin irritation nor sensitisation. Under macroscopic examination, in full thickness defects of subcutaneous tissue and skin, the dressings caused wound healing with no inflammation, undergoing the most gradual biodegradation between weeks 4 and 8, and the observed differences were statistically significant. In the histological assessment, a weakened, limited inflammatory process associated with degradation of the material has been observed. The process of skin wound healing under Medisorb R dressing in the early period was accelerated compared to that observed in the control group with a gauze dressing.
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Affiliation(s)
- Witold Sujka
- Tricomed S.A., Lodz, Świetojańska Street 5/9, 93-493 Lodz, Poland.
| | - Zbigniew Draczynski
- Department of Material and Commodity Sciences and Textile Metrology, Lodz University of Technology, Żeromskiego Street 116, 90-924 Lodz, Poland.
| | - Beata Kolesinska
- Institute of Organic Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Lodz, Poland.
| | - Ilona Latanska
- Tricomed S.A., Lodz, Świetojańska Street 5/9, 93-493 Lodz, Poland.
| | - Zenon Jastrzebski
- National Medicines Institute, Chełmska Street 30/34, 00-725 Warsaw, Poland.
| | - Zbigniew Rybak
- Department of Experimental Surgery and Biomaterial Research, Wroclaw Medical University, Bujwida Street 44, 50-368 Wroclaw, Poland.
| | - Boguslawa Zywicka
- Department of Experimental Surgery and Biomaterial Research, Wroclaw Medical University, Bujwida Street 44, 50-368 Wroclaw, Poland.
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