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Martínez-Ramos C, Rodríguez Ruiz A, Monleón Pradas M, Gisbert Roca F. Characterization of a Delivery System Based on a Hyaluronic Acid 3D Scaffold and Gelatin Microparticles. Polymers (Basel) 2024; 16:1748. [PMID: 38932096 PMCID: PMC11207266 DOI: 10.3390/polym16121748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Revised: 06/14/2024] [Accepted: 06/18/2024] [Indexed: 06/28/2024] Open
Abstract
The objective of this study was to develop and characterize a novel hyaluronic acid (HA) 3D scaffold integrated with gelatin microparticles for sustained-delivery applications. To achieve this goal, the delivery microparticles were synthesized and thoroughly characterized, focusing on their crosslinking mechanisms (vanillin and genipin), degradation profiles, and release kinetics. Additionally, the cytotoxicity of the system was assessed, and its impact on the cell adhesion and distribution using mouse fibroblasts was examined. The combination of both biomaterials offers a novel platform for the gradual release of various factors encapsulated within the microparticles while simultaneously providing cell protection, support, and controlled factor dispersion due to the HA 3D scaffold matrix. Hence, this system offers a platform for addressing injure repair by continuously releasing specific encapsulated factors for optimal tissue regeneration. Additionally, by leveraging the properties of HA conjugates with small drug molecules, we can enhance the solubility, targeting capabilities, and cellular absorption, as well as prolong the system stability and half-life. As a result, this integrated approach presents a versatile strategy for therapeutic interventions aimed at promoting tissue repair and regeneration.
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Affiliation(s)
- Cristina Martínez-Ramos
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, C. de Vera s/n, 46022 Valencia, Spain; (C.M.-R.); (A.R.R.); (M.M.P.)
- Unitat Predepartamental de Medicina, Universitat Jaume I, 12071 Castellón de la Plana, Spain
| | - Alejandro Rodríguez Ruiz
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, C. de Vera s/n, 46022 Valencia, Spain; (C.M.-R.); (A.R.R.); (M.M.P.)
| | - Manuel Monleón Pradas
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, C. de Vera s/n, 46022 Valencia, Spain; (C.M.-R.); (A.R.R.); (M.M.P.)
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, 28029 Madrid, Spain
| | - Fernando Gisbert Roca
- Center for Biomaterials and Tissue Engineering, Universitat Politècnica de València, C. de Vera s/n, 46022 Valencia, Spain; (C.M.-R.); (A.R.R.); (M.M.P.)
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Ch S, Paul M, Padaga SG, Ghosh B, Biswas S. Cationized gelatin-sodium alginate polyelectrolyte nanoparticles encapsulating moxifloxacin as an eye drop to treat bacterial keratitis. Int J Biol Macromol 2024; 264:130457. [PMID: 38432265 DOI: 10.1016/j.ijbiomac.2024.130457] [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: 09/04/2023] [Revised: 02/16/2024] [Accepted: 02/24/2024] [Indexed: 03/05/2024]
Abstract
A mucoadhesive polyelectrolyte complex (PEC) nanoparticles were developed for ocular moxifloxacin (Mox) delivery in Bacterial Keratitis (BK). Moxifloxacin-loaded G/CG-Alg NPs were prepared by an amalgamation of cationic polymers (gelatin (G)/cationized gelatin (CG)), and anionic polymer (sodium alginate (Alg)) along with Mox respectively. Mox@CG-Alg NPs were characterized for physicochemical parameters such as particle size (DLS technique), morphology (SEM analysis), DSC, XRD, encapsulation efficiency, drug loading, mucoadhesive study (by texture analyzer), mucin turbidity, and viscosity assessment. The NPs uptake and toxicity of the formulation were analyzed in the Human Corneal Epithelial (HCE) cell line and an ocular irritation study was performed on the HET-CAM. The results indicated that the CG-Alg NPs, with optimal size (217.2 ± 4 nm) and polydispersity (0.22 ± 0.05), have shown high cellular uptake in monolayer and spheroids of HCE. The drug-loaded formulation displayed mucoadhesiveness, trans-corneal permeation, and sustained the release of the Mox. The anti-bacterial efficacy studied on planktonic bacteria/biofilms of P. aeruginosa and S. aureus (in vitro) indicated that the Mox@CG-Alg NPs displayed low MIC, higher zone of bacterial growth inhibition, and cell death compared to free Mox. A significant reduction of bacterial load was observed in the BK-induced mouse model.
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Affiliation(s)
- Sanjay Ch
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Medchal, Hyderabad 500078, Telangana, India
| | - Milan Paul
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Medchal, Hyderabad 500078, Telangana, India
| | - Sri Ganga Padaga
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Medchal, Hyderabad 500078, Telangana, India
| | - Balaram Ghosh
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Medchal, Hyderabad 500078, Telangana, India
| | - Swati Biswas
- Nanomedicine Research Laboratory, Department of Pharmacy, Birla Institute of Technology & Science-Pilani, Hyderabad Campus, Medchal, Hyderabad 500078, Telangana, India.
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Mohaghegh H, Assadi Z, Derakhshan A, Masaeli E. Accelerating Full-Thickness Wound Healing with Bacterial Cellulose-Based Multilayer Composites. J Pharm Sci 2024; 113:754-763. [PMID: 37748707 DOI: 10.1016/j.xphs.2023.09.018] [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: 08/08/2023] [Revised: 09/20/2023] [Accepted: 09/21/2023] [Indexed: 09/27/2023]
Abstract
Materials that speed up wound healing can be of great benefit to patients and healthcare providers. One-layer dressings, however, have unsatisfactory healing efficacy since it is impossible to use materials with different properties simultaneously, and drug delivery is limited by the depth of penetration. The present study utilized a multilayer wound dressing composed of bacterial cellulose (BC) hydrogel, gelatin/alginate (Gel/Alg) hydrogel, and polycaprolactone (PCL) nanofibers loaded with ciprofloxacin (CIP) to promote the healing process in vivo. The designed dressings showed significant water absorption and sufficient water vapor transmission rate (WVTR) after one week, confirming their ability to absorb wound exudate. Within the first four hours, significant amounts of CIP were released from the drug-containing dressing. Then, between hours 4 and 24, the rate decreased and plateaued on day 9. Both positive and negative bacterial strains were inhibited by the gradual release of CIP, while fibroblasts retained their normal morphology and metabolic activity. Lastly, in vivo tests demonstrated that CIP-loaded multilayer dressings could significantly speed up full-thickness wound healing during 14 days, by reducing inflammation, stimulating re-epithelialization, and enhancing skin regeneration. Our findings indicate that multilayering BC hydrogels with drug-loaded nanofibers provide a promising way to promote wound healing by utilizing all the distinctive properties of these layers.
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Affiliation(s)
- Homa Mohaghegh
- ACECR Institute of Higher Education (Isfahan Branch) Isfahan, P.O. Box 84175-443, Iran; Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, P.O. Box 81593-58686, Iran
| | - Zahra Assadi
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, P.O. Box 81593-58686, Iran
| | - Amin Derakhshan
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, P.O. Box 81593-58686, Iran
| | - Elahe Masaeli
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, P.O. Box 81593-58686, Iran.
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Alven S, Ubanako P, Adeyemi SA, Ndinteh DT, Choonara YE, Aderibigbe BA. Carboxymethyl cellulose/poloxamer gels enriched with essential oil and Ag nanoparticles: promising wound dressings. Ther Deliv 2023; 14:139-156. [PMID: 37125434 DOI: 10.4155/tde-2022-0054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023] Open
Abstract
Aim: Essential oils are promising antibacterial and wound-healing agents that should be explored for the design of wound dressings. Materials & methods: Topical gels prepared from a combination of carboxymethyl cellulose and poloxamer were incorporated with tea tree and lavender oil together with Ag nanoparticles. In vitro release, cytotoxicity, antibacterial, and wound healing studies were performed. Results: The gels displayed good spreadability with viscosity in the range of 210-1200 cP. The gels displayed promising antibacterial activity against selected Gram-positive and Gram-negative bacteria used in the study. The % cell viability of the gels was more than 90.83%. Conclusion: The topical gels displayed excellent wound closure in vitro revealing that they are potential wound dressings for bacteria-infected wounds.
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Affiliation(s)
- Sibusiso Alven
- Department of Chemistry University of Fort Hare, Alice Eastern Cape, 5700, South Africa
| | - Philemon Ubanako
- Department of Pharmacy & Pharmacology, Wits Advanced Drug Delivery Platform Research Unit, School of Therapeutic Science, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Samson A Adeyemi
- Department of Pharmacy & Pharmacology, Wits Advanced Drug Delivery Platform Research Unit, School of Therapeutic Science, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Derek T Ndinteh
- Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, Johannesburg, 2028, South Africa
| | - Yahya E Choonara
- Department of Pharmacy & Pharmacology, Wits Advanced Drug Delivery Platform Research Unit, School of Therapeutic Science, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Yi N, Wang M, Song L, Feng F, Li J, Xie R, Zhao Z, Chen W. Highly hygroscopicity and antioxidant nanofibrous dressing base on alginate for accelerating wound healing. Colloids Surf B Biointerfaces 2023; 225:113240. [PMID: 36889107 DOI: 10.1016/j.colsurfb.2023.113240] [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: 10/03/2022] [Revised: 02/23/2023] [Accepted: 03/02/2023] [Indexed: 03/07/2023]
Abstract
The removal of bacterium and free radicals is important for wound healing. Therefore, it is necessary to prepare biological dressings with antibacterial and antioxidant properties. In this study, high-performance calcium alginate/carbon polymer dots/forsythin composite nanofibrous membrane (CA/CPDs/FT) was explored under the influence of carbon polymer dots and forsythin. The addition of carbon polymer dots improved the nanofiber morphology and therefore enhanced the mechanical strength of the composite membrane. Moreover, CA/CPDs/FT membranes displayed satisfactory antibacterial and antioxidant properties because of the natural properties of forsythin. Meanwhile, outstanding hygroscopicity over 700% was also obtained for the composite membrane. In vitro and in vivo experiments showed that the CA/CPDs/FT nanofibrous membrane could prevent the invasion of bacteria, scavenge free radicals, and promote wound healing. Moreover, its good hygroscopicity and antioxidation characteristics were friendly for the clinical application of high-exudate wounds.
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Affiliation(s)
- Na Yi
- College of Textiles & Clothing, State Key Laboratory for Biofibers and Eco-textiles, Collaborative Innovation Center for Eco-textiles of Shandong Province and the Ministry of Education, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Mengyue Wang
- College of Textiles & Clothing, State Key Laboratory for Biofibers and Eco-textiles, Collaborative Innovation Center for Eco-textiles of Shandong Province and the Ministry of Education, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Li Song
- College of Textiles & Clothing, State Key Laboratory for Biofibers and Eco-textiles, Collaborative Innovation Center for Eco-textiles of Shandong Province and the Ministry of Education, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Fan Feng
- College of Textiles & Clothing, State Key Laboratory for Biofibers and Eco-textiles, Collaborative Innovation Center for Eco-textiles of Shandong Province and the Ministry of Education, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Jiwei Li
- College of Textiles & Clothing, State Key Laboratory for Biofibers and Eco-textiles, Collaborative Innovation Center for Eco-textiles of Shandong Province and the Ministry of Education, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Ruyi Xie
- College of Textiles & Clothing, State Key Laboratory for Biofibers and Eco-textiles, Collaborative Innovation Center for Eco-textiles of Shandong Province and the Ministry of Education, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Zhihui Zhao
- College of Textiles & Clothing, State Key Laboratory for Biofibers and Eco-textiles, Collaborative Innovation Center for Eco-textiles of Shandong Province and the Ministry of Education, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Weichao Chen
- College of Textiles & Clothing, State Key Laboratory for Biofibers and Eco-textiles, Collaborative Innovation Center for Eco-textiles of Shandong Province and the Ministry of Education, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
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Sapuła P, Bialik-Wąs K, Malarz K. Are Natural Compounds a Promising Alternative to Synthetic Cross-Linking Agents in the Preparation of Hydrogels? Pharmaceutics 2023; 15:253. [PMID: 36678882 PMCID: PMC9866639 DOI: 10.3390/pharmaceutics15010253] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/03/2023] [Accepted: 01/06/2023] [Indexed: 01/13/2023] Open
Abstract
The main aim of this review is to assess the potential use of natural cross-linking agents, such as genipin, citric acid, tannic acid, epigallocatechin gallate, and vanillin in preparing chemically cross-linked hydrogels for the biomedical, pharmaceutical, and cosmetic industries. Chemical cross-linking is one of the most important methods that is commonly used to form mechanically strong hydrogels based on biopolymers, such as alginates, chitosan, hyaluronic acid, collagen, gelatin, and fibroin. Moreover, the properties of natural cross-linking agents and their advantages and disadvantages are compared relative to their commonly known synthetic cross-linking counterparts. Nowadays, advanced technologies can facilitate the acquisition of high-purity biomaterials from unreacted components with no additional purification steps. However, while planning and designing a chemical process, energy and water consumption should be limited in order to reduce the risks associated with global warming. However, many synthetic cross-linking agents, such as N,N'-methylenebisacrylamide, ethylene glycol dimethacrylate, poly (ethylene glycol) diacrylates, epichlorohydrin, and glutaraldehyde, are harmful to both humans and the environment. One solution to this problem could be the use of bio-cross-linking agents obtained from natural resources, which would eliminate their toxic effects and ensure the safety for humans and the environment.
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Affiliation(s)
- Paulina Sapuła
- Department of Organic Chemistry and Technology, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska St., 31-155 Cracow, Poland
| | - Katarzyna Bialik-Wąs
- Department of Organic Chemistry and Technology, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska St., 31-155 Cracow, Poland
| | - Katarzyna Malarz
- A. Chelkowski Institute of Physics, Faculty of Science and Technology, University of Silesia in Katowice, 75 Pułku Piechoty 1A, 41-500 Chorzow, Poland
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Nie J, Wu Z, Pang B, Guo Y, Li S, Pan Q. Fabrication of ZnO@Plant Polyphenols/Cellulose as Active Food Packaging and Its Enhanced Antibacterial Activity. Int J Mol Sci 2022; 23:ijms23095218. [PMID: 35563609 PMCID: PMC9104473 DOI: 10.3390/ijms23095218] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/04/2022] [Accepted: 05/05/2022] [Indexed: 02/01/2023] Open
Abstract
To investigate the efficient use of bioresources and bioproducts, plant polyphenol (PPL) was extracted from larch bark and further applied to prepare ZnO@PPL/Cel with cellulose to examine its potential as an active package material. The structure and morphology were fully characterized by XRD, SEM, FTIR, XPS and Raman spectra. It was found that PPL is able to cover ZnO and form a coating layer. In addition, PPL cross-links with cellulose and makes ZnO distribute evenly on the cellulose fibers. Coating with PPL creates a pinecone-like morphology in ZnO, which is constructed by subunits of 50 nm ZnO slices. The interactions among ZnO, PPL and cellulose have been attributed to hydrogen bonding, which plays an important role in guiding the formation of composites. The antibacterial properties against Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus) were tested by the inhibition zone method. Our composite ZnO@PPL/Cel has superior antibacterial activity compared to ZnO/Cel. The antibacterial mechanism has also been elaborated on. The low cost, simple preparation method and good performance of ZnO@PPL/Cel suggest the potential for it to be applied as active food packaging.
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Affiliation(s)
- Jingheng Nie
- Key Laboratory of Bio-Based Material Science & Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China; (J.N.); (Z.W.); (B.P.); (S.L.)
| | - Ziyang Wu
- Key Laboratory of Bio-Based Material Science & Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China; (J.N.); (Z.W.); (B.P.); (S.L.)
| | - Bo Pang
- Key Laboratory of Bio-Based Material Science & Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China; (J.N.); (Z.W.); (B.P.); (S.L.)
| | - Yuanru Guo
- Key Laboratory of Bio-Based Material Science & Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China; (J.N.); (Z.W.); (B.P.); (S.L.)
- Correspondence: (Y.G.); (Q.P.)
| | - Shujun Li
- Key Laboratory of Bio-Based Material Science & Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China; (J.N.); (Z.W.); (B.P.); (S.L.)
| | - Qingjiang Pan
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
- Correspondence: (Y.G.); (Q.P.)
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Shehzad H, Farooqi ZH, Ahmed E, Sharif A, Razzaq S, Mirza FN, Irfan A, Begum R. Synthesis of hybrid biosorbent based on 1,2-cyclohexylenedinitrilotetraacetic acid modified crosslinked chitosan and organo-functionalized calcium alginate for adsorptive removal of Cu(II). Int J Biol Macromol 2022; 209:132-143. [PMID: 35390398 DOI: 10.1016/j.ijbiomac.2022.04.012] [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: 02/19/2022] [Revised: 03/30/2022] [Accepted: 04/03/2022] [Indexed: 12/27/2022]
Abstract
The present study is based on the synthesis of a novel hybrid biosorbent using 1,2-cyclohexylenedinitrilotetraacetic acid modified crosslinked chitosan and amino-thiocarbamate moiety functionalized sodium alginate (CDTA-CS/TSC-CA). The fabricated sorbent was employed to investigate the efficient recovery of Cu(II) from aqueous media. CDTA-CS/TSC-CA was characterized using Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). Analysis confirmed the successful modification of both biopolymers and subsequent loading of Cu(II) ions. CDTA-CS/TSC-CA was casted in the form of hydrogel beads having different CDTA-CS to TSC-CA mass ratios i.e., 10.0-40.0% by mass. The hydrogel beads 4CDTA-CS/TSC-CA with CDTA-CS/TSC-CA mass ratio of 40.0% was found most effective for copper sorption. Equilibrium sorption results showed that initial concentration of copper, medium pH, contact time, sorbent dosage and temperature influenced the sorption capacity (qe). Rate of sorption data was interpreted using different kinetic models and found best fitted with pseudo second order rate expression (R2 ≈ 0.99), illustrating that the rate determining step includes the electron density transfer from sorbent coordination sites to central copper ions. Crank's RIDE equation and Elovich chemisorption model (ECM) revealed the presence of two sorption phases, initially rapid sorption followed by comparatively a slow uptake. Equilibrium sorption data was well depicted by Langmuir model and maximum monolayer adsorption capacity (qm) was computed as 276.53 mg·g-1 at 298 K. Standard Gibbs free energy change, ∆G° (-19.99, -20.18 and -20.36 kJ/ mol), standard enthalpy change, ∆H° (-8.95 kJmol) and standard entropy change, ∆S° (0.04 kJ/mol K-1) values suggested that the adsorption process is spontaneous and exothermic. Hence, 4CDTA-CS/TSC-CA was found efficient biosorbent for copper removal from its dilute effluents.
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Affiliation(s)
- Hamza Shehzad
- School of Chemistry, University of the Punjab, Lahore 54590, Pakistan
| | - Zahoor H Farooqi
- School of Chemistry, University of the Punjab, Lahore 54590, Pakistan.
| | - Ejaz Ahmed
- School of Chemistry, University of the Punjab, Lahore 54590, Pakistan
| | - Ahsan Sharif
- School of Chemistry, University of the Punjab, Lahore 54590, Pakistan.
| | - Sana Razzaq
- School of Chemistry, University of the Punjab, Lahore 54590, Pakistan
| | - Fatima Noor Mirza
- School of Chemistry, University of the Punjab, Lahore 54590, Pakistan
| | - Ahmad Irfan
- Department of Chemistry, Faculty of Science, King Khalid University, Abha 61413, Saudi Arabia; Research Center for Advanced Materials Science, King Khalid University, Abha 61413, Saudi Arabia
| | - Robina Begum
- School of Chemistry, University of the Punjab, Lahore 54590, Pakistan
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Shehzad H, Ahmed E, Sharif A, Farooqi ZH, Din MI, Begum R, Liu Z, Zhou L, Ouyang J, Irfan A, Nawaz I. Modified alginate-chitosan-TiO 2 composites for adsorptive removal of Ni(II) ions from aqueous medium. Int J Biol Macromol 2022; 194:117-127. [PMID: 34861277 DOI: 10.1016/j.ijbiomac.2021.11.140] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 11/17/2021] [Accepted: 11/21/2021] [Indexed: 11/05/2022]
Abstract
In this study, organo-funtionalization of sodium-alginate has been carried out using phenylsemicarbazide as modifier to graft N, O-donor atoms containing functional groups (amino-carbamate moieties) to offer novel support for TiO2 immobilization. Hybrid composite made of aminocarbamated alginate, carboxymethyl chitosan (CMC) and titanium oxide TiO2 (MCA-TiO2) was prepared for the promising adsorptive remediation of Ni(II). FT-IR, SEM-EDX were employed to characterize MCA-TiO2. The optimization of TiO2 to modified alginate mass ratio was carried out and hydrogel beads with TiO2/MCA mass ratio of 10.0% (2MCA-TiO2) revealed highest sorption efficiency. The produced sorbents were adapted in the form of hydrogel beads for operation. Organic functionalization based on aminocarbamate (OCONHNH2) moieties on linear chains of alginate embedded additional chelating functional sites which enhanced sorption and selectivity. Batch mode experiments were conducted for optimization of pH and sorbent dose. Equilibrium sorption, kinetic and thermodynamic studies were performed to pattern the nature of sorption. Kinetic data was found in close agreement with pseudo-second order rate expression (PSORE). Isothermal equilibrium sorption data was well fitted with Langmuir adsorption model. Maximum sorption capacity was evaluated as 229 mg/g at 298 K and pH = 6.0.
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Affiliation(s)
- Hamza Shehzad
- School of Chemistry, University of the Punjab, Lahore 54590, Pakistan
| | - Ejaz Ahmed
- School of Chemistry, University of the Punjab, Lahore 54590, Pakistan
| | - Ahsan Sharif
- School of Chemistry, University of the Punjab, Lahore 54590, Pakistan.
| | - Zahoor H Farooqi
- School of Chemistry, University of the Punjab, Lahore 54590, Pakistan.
| | | | - Robina Begum
- School of Chemistry, University of the Punjab, Lahore 54590, Pakistan
| | - Zhirong Liu
- School of Chemistry, Biology and Material Sciences, East China University of Technology, Nanchang, PR China
| | - Limin Zhou
- School of Chemistry, Biology and Material Sciences, East China University of Technology, Nanchang, PR China
| | - Jinbo Ouyang
- School of Chemistry, Biology and Material Sciences, East China University of Technology, Nanchang, PR China
| | - Ahmad Irfan
- Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Research Center for Advanced Materials Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Imran Nawaz
- School of Chemistry, University of the Punjab, Lahore 54590, Pakistan
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Nie B, Wang H, Zhang Y, Rao C, Wang H, Gao X, Li W, Niu B. Effect of sodium alginate/phosphate-stabilized amorphous calcium carbonate nanoparticles on chitosan membranes. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Ndlovu SP, Ngece K, Alven S, Aderibigbe BA. Gelatin-Based Hybrid Scaffolds: Promising Wound Dressings. Polymers (Basel) 2021; 13:2959. [PMID: 34502997 PMCID: PMC8434607 DOI: 10.3390/polym13172959] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 08/19/2021] [Accepted: 08/20/2021] [Indexed: 12/14/2022] Open
Abstract
Wound care is a major biomedical field that is challenging due to the delayed wound healing process. Some factors are responsible for delayed wound healing such as malnutrition, poor oxygen flow, smoking, diseases (such as diabetes and cancer), microbial infections, etc. The currently used wound dressings suffer from various limitations, including poor antimicrobial activity, etc. Wound dressings that are formulated from biopolymers (e.g., cellulose, chitin, gelatin, chitosan, etc.) demonstrate interesting properties, such as good biocompatibility, non-toxicity, biodegradability, and attractive antimicrobial activity. Although biopolymer-based wound dressings display the aforementioned excellent features, they possess poor mechanical properties. Gelatin, a biopolymer has excellent biocompatibility, hemostatic property, reduced cytotoxicity, low antigenicity, and promotes cellular attachment and growth. However, it suffers from poor mechanical properties and antimicrobial activity. It is crosslinked with other polymers to enhance its mechanical properties. Furthermore, the incorporation of antimicrobial agents into gelatin-based wound dressings enhance their antimicrobial activity in vitro and in vivo. This review is focused on the development of hybrid wound dressings from a combination of gelatin and other polymers with good biological, mechanical, and physicochemical features which are appropriate for ideal wound dressings. Gelatin-based wound dressings are promising scaffolds for the treatment of infected, exuding, and bleeding wounds. This review article reports gelatin-based wound dressings which were developed between 2016 and 2021.
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Affiliation(s)
| | | | | | - Blessing A. Aderibigbe
- Department of Chemistry, University of Fort Hare, Alice 5700, South Africa; (S.P.N.); (K.N.); (S.A.)
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