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Singha SK, Hoque SM, Das H, Alim MA. Evaluation of chitosan-Ag/TiO 2 nanocomposite for the enhancement of shelf life of chili and banana fruits. Heliyon 2023; 9:e21752. [PMID: 38027729 PMCID: PMC10660027 DOI: 10.1016/j.heliyon.2023.e21752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 10/26/2023] [Indexed: 12/01/2023] Open
Abstract
Post-harvest losses of fruits and vegetables account for a large share of food waste in the world due to improper handling and packaging. By using the sol-gel method, Ag/TiO2 nanocomposite was prepared in this study from micro-sized commercial TiO2 powder and incorporated in a chitosan-cellulose matrix for the purpose of promising food packaging. The particle size and distribution of Ag nanoparticles (9.2437 nm size) confirmed their successful inclusion in the TiO2 surface. The morphology of the package assured the successful and uniform disbursement of Ag/TiO2 nanocomposite into the chitosan-cellulose matrix, which led to enhanced water resistance and photocatalytic activity. The developed package is proficient in hindering the growth of fecal coliform bacteria (Esche (Escherichia coli) by 9 mm in the agar plate. Moreover, the efficient application of chitosan-Ag/TiO2 nanocomposite in food coating and packaging was examined in extending shelf life, minimizing water loss, and preventing microbial infection during the storage of chili (up to 7 days at 37 °C) and banana, respectively. It can be concluded from the results that chitosan-Ag/TiO2 nanocomposite-based food coating and packaging have competent potential for enhancing the shelf life of moist foods.
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Affiliation(s)
- Sourav Kumar Singha
- Bangladesh Food Safety Authority, Dhaka, 1000, Bangladesh
- Department of Food Technology and Rural Industries, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | | | - Harinarayan Das
- Materials Science Division, Atomic Energy Centre, Ramna, Dhaka, Bangladesh
| | - Md Abdul Alim
- Department of Food Technology and Rural Industries, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
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2
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Agrawal A, Sharma R, Sharma A, Gurjar KC, Kumar S, Chatterjee S, Pandey H, Awasthi K, Awasthi A. Antibacterial and antibiofilm efficacy of green synthesized ZnO nanoparticles using Saraca asoca leaves. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:86328-86337. [PMID: 37402918 DOI: 10.1007/s11356-023-28524-7] [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: 03/04/2023] [Accepted: 06/27/2023] [Indexed: 07/06/2023]
Abstract
Biofilms are made up of bacterial colonies and their extracellular polymeric substances (EPS) matrix, which protects the bacteria from adverse environmental conditions. The increasing drug resistivity of pathogenic bacteria is becoming an emergency for developing new antibacterial agents. In this study, we have synthesized the zinc oxide nanoparticles (ZnO NPs) using the leaf extract of Saraca asoca plant, and the antibacterial and antibiofilm activity of green synthesized ZnO NPs was measured against the biofilm-producing bacteria Bacillus subtilis. The disk diffusion data reveals that the zone of inhibition (ZOI) starts at a concentration of 0.5 mg/mL and minimum inhibition concentration (100 µg/mL) and minimum bactericidal concentration (150 µg/mL) values were also evaluated for green synthesized ZnO nanomaterials. Crystal violet test and microscopic examination were used to assess the impact of produced nanoparticles on biofilm development. The findings indicated a nearly 45%, 64%, and 83% suppression of biofilm development at 0.5 × MIC, 0.75 × MIC, and 1 × MIC value, respectively. The biofilm biomass of the preformed or matured biofilms by the ZnO NPs was evaluated to be 68%, 50%, and 33% at concentrations of 0.5 × MIC, 0.75 × MIC, and 1 × MIC which was concentration-dependent. Moreover, flow cytometry results suggest damage to the bacterial cell membrane. The data indicated that the proportion of dead cells increased with NP concentration in comparison to the control. Therefore, it can be concluded that the green synthetic ZnO nanoparticles showed excellent antibacterial and antibiofilm activity against the Bacillus subtilis bacteria that produce biofilms and that they could be a promising substitute agent for the treatment of biofilms and drug-resistant bacteria.
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Affiliation(s)
- Ankush Agrawal
- Department of Zoology, University of Rajasthan, Jaipur, 302004, India
| | - Ruhani Sharma
- Department of Zoology, University of Rajasthan, Jaipur, 302004, India
- Department of Life Sciences, Vivekananda Global University, Jaipur, 303012, India
| | - Ankita Sharma
- Department of Zoology, University of Rajasthan, Jaipur, 302004, India
| | | | - Sanjay Kumar
- Department of Physics, Malaviya National Institute of Technology, Jaipur, 302017, India
| | - Samit Chatterjee
- Department of Zoology, University of Rajasthan, Jaipur, 302004, India
| | - Harsh Pandey
- Department of Chemical Engineering, Manipal University, Jaipur, 303007, India
| | - Kamlendra Awasthi
- Department of Physics, Malaviya National Institute of Technology, Jaipur, 302017, India
| | - Anjali Awasthi
- Department of Zoology, University of Rajasthan, Jaipur, 302004, India.
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3
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Xu T, Gao H, Zhou J, He M, Ji X, Dai H, Rojas OJ. Design of AgNPs doped chitosan/sodium lignin sulfonate/polypyrrole films with antibacterial and endotoxin adsorption functions. Int J Biol Macromol 2023; 229:321-328. [PMID: 36543299 DOI: 10.1016/j.ijbiomac.2022.12.143] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 11/15/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
There is an urgent need to develop materials to prevent bacterial infection and the deleterious effects of endotoxins. In this study, we introduce a one-step electrodeposition method to prepare films composed of chitosan/Ag/polypyrrole and layer-by-layer self-assembly to introduce lignin sulphonate (LS) to obtain chitosan/Ag/polypyrrole/LS films. Antibacterial effects against both E. coli and S. aureus are shown by bacterial growth profiles and observation of bacteriostatic zones. Meanwhile, the addition of self-assembled LS improved the antibacterial effect of the film. For E. coli, the inhibition zone diameter was 0.93 cm, while for S. aureus, the inhibition zone diameter was 0.72 cm. Rapid and efficient endotoxin adsorption effects were shown whereby the electrostatic interactions between chitosan and endotoxin molecules played a major role. After adsorption for 1 h, in initial concentration of 1 EU/mL endotoxin solution, the adsorption efficiency could reach up to 85 %, while in initial concentration of 5 EU/mL endotoxin solution, the adsorption efficiency could reach up to 87.6 %. The results suggest chitosan/Ag/polypyrrole/LS films for their capability as a new type of antibacterial film with intrinsic endotoxin adsorption activity.
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Affiliation(s)
- Tingting Xu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China; Bioproducts Institute, Department of Chemical and Biological Engineering, Department of Chemistry and Department of Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada
| | - Huanli Gao
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Jiahuan Zhou
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Ming He
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Xingxiang Ji
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Hongqi Dai
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China.
| | - Orlando J Rojas
- Bioproducts Institute, Department of Chemical and Biological Engineering, Department of Chemistry and Department of Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada.
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Mishra S, Gupta A, Upadhye V, Singh SC, Sinha RP, Häder DP. Therapeutic Strategies against Biofilm Infections. LIFE (BASEL, SWITZERLAND) 2023; 13:life13010172. [PMID: 36676121 PMCID: PMC9866932 DOI: 10.3390/life13010172] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/29/2022] [Accepted: 01/03/2023] [Indexed: 01/11/2023]
Abstract
A biofilm is an aggregation of surface-associated microbial cells that is confined in an extracellular polymeric substance (EPS) matrix. Infections caused by microbes that form biofilms are linked to a variety of animals, including insects and humans. Antibiotics and other antimicrobials can be used to remove or eradicate biofilms in order to treat infections. However, due to biofilm resistance to antibiotics and antimicrobials, clinical observations and experimental research clearly demonstrates that antibiotic and antimicrobial therapies alone are frequently insufficient to completely eradicate biofilm infections. Therefore, it becomes crucial and urgent for clinicians to properly treat biofilm infections with currently available antimicrobials and analyze the results. Numerous biofilm-fighting strategies have been developed as a result of advancements in nanoparticle synthesis with an emphasis on metal oxide np. This review focuses on several therapeutic strategies that are currently being used and also those that could be developed in the future. These strategies aim to address important structural and functional aspects of microbial biofilms as well as biofilms' mechanisms for drug resistance, including the EPS matrix, quorum sensing (QS), and dormant cell targeting. The NPs have demonstrated significant efficacy against bacterial biofilms in a variety of bacterial species. To overcome resistance, treatments such as nanotechnology, quorum sensing, and photodynamic therapy could be used.
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Affiliation(s)
- Sonal Mishra
- Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Amit Gupta
- Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Vijay Upadhye
- Department of Microbiology, Parul Institute of Applied Science (PIAS), Center of Research for Development (CR4D), Parul University, Vadodara 391760, Gujarat, India
| | - Suresh C. Singh
- Pathkits Healthcare Pvt. Ltd., Gurugram 122001, Haryana, India
| | - Rajeshwar P. Sinha
- Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Donat-P. Häder
- Department of Botany, Emeritus from Friedrich-Alexander University, 91096 Möhrendorf, Germany
- Correspondence: ; Tel.: +49-913-148-730
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5
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Mechanical, antibacterial, and non-cytotoxic performance of polypropylene nanocomposites reinforced with sTiO2 deposited with AgNPs mediated by quercetin biomolecule. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04375-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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6
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Calabrese C, La Parola V, Testa ML, Liotta LF. Antifouling and antimicrobial activity of Ag, Cu and Fe nanoparticles supported on silica and titania. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2021.120636] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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7
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Olivares-Ramírez MA, López-Zamora L, Peña-Juárez MG, Gutiérrez-Castañeda EJ, Gonzalez-Calderon JA. Application of the response surface methodology for the evaluation of Staphylococcus aureus inhibition with Ag/TiO2 nanoparticles. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03822-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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8
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Gálvez-Iriqui AC, García-Romo JS, Cortez-Rocha MO, Burgos-Hernández A, Burboa-Zazueta MG, Luque-Alcaraz AG, Calderón-Santoyo M, Argüelles-Monal WM, Plascencia-Jatomea M. Phytotoxicity, cytotoxicity, and in vivo antifungal efficacy of chitosan nanobiocomposites on prokaryotic and eukaryotic cells. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:3051-3065. [PMID: 32902751 DOI: 10.1007/s11356-020-10716-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 08/30/2020] [Indexed: 06/11/2023]
Abstract
Chitosan (CS) nanosystems have potential applications for the control of microorganisms in the medical, environmental, and agrifood fields. In vivo and in vitro assays of CS nanosystems have experienced increased activity due to improved physicochemical properties, biological activity, and reactivity. Hence, it is important to determine whether their application involves toxicological risks. The aim of this study was to evaluate the mutagenic, cytotoxic, phytotoxic, and in vivo antifungal activity of chitosan-pyrrole-2-carboxylic acid nanobiocomposites (CS-PCA). The CS-PCA nanoparticles were synthesized by means of the nanoprecipitation technique with a size and ζ-potential of 502 ± 72 nm and + 54.7 ± 15.0 mV, respectively. According to the Ames test, no evidence of mutagenic activity was observed in Salmonella typhimurium strains. The cytotoxic assay showed that the incorporation of PCA into the CS matrix increased the toxic effect on ARPE-19 cells. However, fluorescence microscopy of ARPE-19 cells did not reveal morphostructural changes allusive to cell injury. CS-PCA exhibited strong phytotoxicity on lettuce seeds and the complete inhibition of seed development. The antifungal assay demonstrated that the CS-PCA delayed Aspergillus niger infection in tomato fruit until day 3; however, its use for the pre-treatment of seeds might exert adverse effects on plant development.
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Affiliation(s)
- Alma Carolina Gálvez-Iriqui
- Departamento de Investigación y Posgrado en Alimentos, Microbiology and Mycotoxins Laboratory, Blvd. Luis Encinas y Rosales S/N, Col. Centro, 83000, Hermosillo, Sonora, México
| | - Joel Said García-Romo
- Departamento de Investigación y Posgrado en Alimentos, Microbiology and Mycotoxins Laboratory, Blvd. Luis Encinas y Rosales S/N, Col. Centro, 83000, Hermosillo, Sonora, México
| | - Mario Onofre Cortez-Rocha
- Departamento de Investigación y Posgrado en Alimentos, Microbiology and Mycotoxins Laboratory, Blvd. Luis Encinas y Rosales S/N, Col. Centro, 83000, Hermosillo, Sonora, México
| | - Armando Burgos-Hernández
- Departamento de Investigación y Posgrado en Alimentos, Microbiology and Mycotoxins Laboratory, Blvd. Luis Encinas y Rosales S/N, Col. Centro, 83000, Hermosillo, Sonora, México
| | - María Guadalupe Burboa-Zazueta
- Departamento de Investigaciones Científicas y Tecnológicas, Cell Biology Laboratory, Blvd. Luis Encinas y Rosales S/N, Col. Centro, 83000, Hermosillo, Sonora, México
| | - Ana Guadalupe Luque-Alcaraz
- Departamento de Ingeniería Biomédica, Universidad Estatal de Sonora, Ley Federal del Trabajo S/N, Col. Apolo, 83100, Hermosillo, Sonora, México
| | - Montserrat Calderón-Santoyo
- Integral Laboratory of Food Research, Instituto Tecnológico de Tepic, Avenida Tecnológico 2595, Col. Lagos del Country, 63175, Tepic, Nayarit, México
| | - Waldo Manuel Argüelles-Monal
- Biopolymer Laboratory, Centro de Investigación y Desarrollo en Alimentación, A.C., Carretera Gustavo Enrique Astiazarán Rosas, N0. 46, 83304, Hermosillo, Sonora, Mexico
| | - Maribel Plascencia-Jatomea
- Departamento de Investigación y Posgrado en Alimentos, Microbiology and Mycotoxins Laboratory, Blvd. Luis Encinas y Rosales S/N, Col. Centro, 83000, Hermosillo, Sonora, México.
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Athir N, Shah SAA, Shehzad FK, Cheng J, Zhang J, Shi L. Rutile TiO2 integrated zwitterion polyurethane composite films as an efficient photostable food packaging material. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104733] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Mallakpour S, Ramezanzade V. Green fabrication of chitosan/tragacanth gum bionanocomposite films having TiO2@Ag hybrid for bioactivity and antibacterial applications. Int J Biol Macromol 2020; 162:512-522. [DOI: 10.1016/j.ijbiomac.2020.06.163] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/13/2020] [Accepted: 06/17/2020] [Indexed: 11/24/2022]
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11
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Pircalabioru GG, Chifiriuc MC. Nanoparticulate drug-delivery systems for fighting microbial biofilms: from bench to bedside. Future Microbiol 2020; 15:679-698. [PMID: 32495694 DOI: 10.2217/fmb-2019-0251] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Biofilms are highly tolerant to antimicrobial agents and adverse environmental conditions being important reservoirs for chronic and hard-to-treat infections. Nanomaterials exhibit microbiostatic/microbicidal/antipathogenic properties and can be also used for the delivery of antibiofilm agents. However, few of the many promising leads offered by nanotechnology reach clinical studies and eventually, become available to clinicians. The aim of this paper was to review the progress and challenges in the development of nanotechnology-based antibiofilm drug-delivery systems. The main identified challenges are: most papers report only in vitro studies of the activity of different nanoformulations; lack of standardization in the methodological approaches; insufficient collaboration between material science specialists and clinicians; paucity of in vivo studies to test efficiency and safety.
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Affiliation(s)
- Gratiela G Pircalabioru
- University of Bucharest, Faculty of Biology, Research Institute of The University of Bucharest (ICUB), Bucharest, Romania
| | - Mariana-Carmen Chifiriuc
- University of Bucharest, Faculty of Biology, Research Institute of The University of Bucharest (ICUB), Bucharest, Romania
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Peña-Juárez MG, Robles-Martínez M, Méndez-Rodríguez KB, López-Esparza R, Pérez E, Gonzalez-Calderon JA. Role of the chemical modification of titanium dioxide surface on the interaction with silver nanoparticles and the capability to enhance antimicrobial properties of poly(lactic acid) composites. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03235-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ravikumar KVG, Debayan G, Mrudula P, Chandrasekaran N, Amitava M. In situ formation of bimetallic FeNi nanoparticles on sand through green technology: Application for tetracycline removal. FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 2020; 14:16. [DOI: 10.1007/s11783-019-1195-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 10/14/2019] [Accepted: 10/21/2019] [Indexed: 10/26/2023]
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14
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Chen YC, Liao CH, Shen WT, Su C, Wu YC, Tsai MH, Hsiao SS, Yu KP, Tseng CH. Effective disinfection of airborne microbial contamination in hospital wards using a zero-valent nano-silver/TiO 2 -chitosan composite. INDOOR AIR 2019; 29:439-449. [PMID: 30738001 DOI: 10.1111/ina.12543] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 02/04/2019] [Accepted: 02/05/2019] [Indexed: 06/09/2023]
Abstract
A novel antimicrobial composite of zero-valent silver nanoparticles (AgNPs), titania (TiO2 ), and chitosan (CS) was prepared via photochemical deposition of AgNPs on a CS-TiO2 matrix (AgNPs@CS-TiO2 ). Electron microscopy showed that the AgNPs were well dispersed on the CS-TiO2 , with diameters of 6.69-8.84 nm. X-ray photoelectron spectra indicated that most of the AgNPs were reduced to metallic Ag. Fourier-transform infrared spectroscopy indicated that some AgNPs formed a chelate with CS through coordination of Ag+ with the CS amide II groups. The zones of inhibition of AgNPs@CS-TiO2 for bacteria (Escherichia coli and Staphylococcus epidermidis) and fungi (Aspergillus niger and Penicillium spinulosum) were 6.72-11.08 and 5.45-5.77 mm, respectively, and the minimum (critical) concentrations of AgNPs required to inhibit the growth of bacteria and fungi were 7.57 and 16.51 µg-Ag/mm2 , respectively. The removal efficiency of a AgNPs@TiO2 -CS bed filter for bioaerosols (η) increased with the packing depth, and the optimal filter quality (qF) occurred for packing depths of 2-4 cm (qF = 0.0285-0.103 Pa-1 ; η = 57.6%-98.2%). When AgNPs@TiO2 -CS bed filters were installed in the ventilation systems of hospital wards, up to 88% of bacteria and 97% of fungi were removed within 30 minutes. Consequently, AgNPs@TiO2 -CS has promising potentials in bioaerosol purification.
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Affiliation(s)
- Yen-Chi Chen
- Institute of Environmental and Occupational Health Sciences, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Chun-Hsing Liao
- Department of Internal Medicine, Far-Eastern Memosrial Hospital, New Taipei City, Taiwan, ROC
- Department of Medicine, National Yang-Ming University, Taiwan, ROC
| | - Wan-Tien Shen
- Institute of Environmental and Occupational Health Sciences, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Chien Su
- Institute of Environmental and Occupational Health Sciences, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Yu-Chiao Wu
- Institute of Environmental and Occupational Health Sciences, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Ming-Hsuan Tsai
- Institute of Environmental and Occupational Health Sciences, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Shui-Shu Hsiao
- Office of Medical Engineering, Far-Eastern Memorial Hospital, New Taipei City, Taiwan, ROC
| | - Kuo-Pin Yu
- Institute of Environmental and Occupational Health Sciences, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Chao-Heng Tseng
- Institute of Environmental Engineering and Management, National Taipei University of Technology, Taipei, Taiwan, ROC
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Ravikumar K, Sudakaran SV, Ravichandran K, Pulimi M, Natarajan C, Mukherjee A. Green synthesis of NiFe nano particles using Punica granatum peel extract for tetracycline removal. JOURNAL OF CLEANER PRODUCTION 2019; 210:767-776. [DOI: 10.1016/j.jclepro.2018.11.108] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
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16
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Jbeli A, Hamden Z, Bouattour S, Ferraria A, Conceição D, Ferreira LV, Chehimi M, do Rego AB, Rei Vilar M, Boufi S. Chitosan-Ag-TiO2 films: An effective photocatalyst under visible light. Carbohydr Polym 2018; 199:31-40. [DOI: 10.1016/j.carbpol.2018.06.122] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 06/12/2018] [Accepted: 06/28/2018] [Indexed: 12/12/2022]
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17
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Lee D, Seo Y, Khan MS, Hwang J, Jo Y, Son J, Lee K, Park C, Chavan S, Gilad AA, Choi J. Use of Nanoscale Materials for the Effective Prevention and Extermination of Bacterial Biofilms. BIOTECHNOL BIOPROC E 2018. [DOI: 10.1007/s12257-017-0348-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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18
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Ocak B. Film-forming ability of collagen hydrolysate extracted from leather solid wastes with chitosan. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:4643-4655. [PMID: 29197053 DOI: 10.1007/s11356-017-0843-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 11/24/2017] [Indexed: 06/07/2023]
Abstract
Discharges of huge quantities of leather solid wastes by leather industries and the increased use of synthetic packaging films have raised serious concerns on account of their environmental impacts. The paper focuses on the development and characterization of potential environmentally friendly composite films using collagen hydrolysate (CH) extracted from leather solid wastes and chitosan (C) to assess the feasibility of producing polymeric materials suitable for applications in packaging and wrapping purposes. Solid collagen-based protein hydrolysate was extracted from chromium-tanned leather wastes and analyzed to determine its chemical properties. With the goal of improving the physico-chemical performance of CH, three types of composite films (CH75/C25, CH50/C50, CH25/C75) were prepared with increasing concentrations of C, and some of their physical and functional properties were characterized. The results indicated that the addition of C caused increase (p < 0.05) in the thickness, tensile strength (TS), elasticity modulus (EM), and water vapor permeability (WVP), leading to stronger films as compared with CH film, but significantly (p < 0.05) decreased the elongation at break (EAB) and solubility of films (p < 0.05). The light barrier measurements present low values of transparency at 600 nm of the CH/C films, indicating that the films are very transparent and they have excellent barrier properties against UV light. The structural properties investigated by FTIR and DSC showed total miscibility between both polymers. Scanning electron micrographs revealed that CH/C composite films showed a compact homogeneous structure. These results demonstrate the potential application of CH/C composite films in packaging industry.
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Affiliation(s)
- Buğra Ocak
- Department of Leather Engineering, Faculty of Engineering, Ege University, 35100, Bornova-Izmir, Turkey.
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Abstract
Despite an array of cogent antibiotics, bacterial infections, notably those produced by nosocomial pathogens, still remain a leading factor of morbidity and mortality around the globe. They target the severely ill, hospitalized and immunocompromised patients with incapacitated immune system, who are prone to infections. The choice of antimicrobial therapy is largely empirical and not devoid of toxicity, hypersensitivity, teratogenicity and/or mutagenicity. The emergence of multidrug-resistant bacteria further intensifies the clinical predicament as it directly impacts public health due to diminished potency of current antibiotics. In addition, there is an escalating concern with respect to biofilm-associated infections that are refractory to the presently available antimicrobial armory, leaving almost no therapeutic option. Hence, there is a dire need to develop alternate antibacterial agents. The past decade has witnessed a substantial upsurge in the global use of nanomedicines as innovative tools for combating the high rates of antimicrobial resistance. Antibacterial activity of metal and metal oxide nanoparticles (NPs) has been extensively reported. The microbes are eliminated either by microbicidal effects of the NPs, such as release of free metal ions culminating in cell membrane damage, DNA interactions or free radical generation, or by microbiostatic effects coupled with killing potentiated by the host's immune system. This review encompasses the magnitude of multidrug resistance in nosocomial infections, bacterial evasion of the host immune system, mechanisms used by bacteria to develop drug resistance and the use of nanomaterials based on metals to overcome these challenges. The diverse annihilative effects of conventional and biogenic metal NPs for antibacterial activity are also discussed. The use of polymer-based nanomaterials and nanocomposites, alone or functionalized with ligands, antibodies or antibiotics, as alternative antimicrobial agents for treating severe bacterial infections is also discussed. Combinatorial therapy with metallic NPs, as adjunct to the existing antibiotics, may aid to restrain the mounting menace of bacterial resistance and nosocomial threat.
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Affiliation(s)
- Hassan A Hemeg
- Department of Medical Laboratories Technology, Faculty of Applied Medical Sciences, Taibah University, Medina, Kingdom of Saudi Arabia
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20
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Hosseini Nasab N, Jalili MM, Farrokhpay S. Application of paraffin and silver coated titania nanoparticles in polyethylene nanocomposite food packaging films. J Appl Polym Sci 2017. [DOI: 10.1002/app.45913] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Nafiseh Hosseini Nasab
- Department of Polymer Engineering, Science & Research Branch; Islamic Azad University; Tehran Iran
| | - Mohammad Mehdi Jalili
- Department of Polymer Engineering, Science & Research Branch; Islamic Azad University; Tehran Iran
| | - Saeed Farrokhpay
- School of Chemical Engineering; University of Queensland; St. Lucia, Brisbane Queensland 4072 Australia
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21
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Natarajan S, Lakshmi DS, Bhuvaneshwari M, Iswarya V, Mrudula P, Chandrasekaran N, Mukherjee A. Antifouling activities of pristine and nanocomposite chitosan/TiO 2/Ag films against freshwater algae. RSC Adv 2017; 7:27645-27655. [DOI: 10.1039/c7ra03876c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023] Open
Abstract
Adhesion of microalgae or biofouling on submerged artificial surfaces is a universal problem in freshwater environments.
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Affiliation(s)
| | - D. Shanthana Lakshmi
- Reverse Osmosis Membrane Division
- CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI)
- Council of Scientific and Industrial Research (CSIR)
- Bhavnagar-364 002
- India
| | | | - V. Iswarya
- Centre for Nanobiotechnology
- VIT University
- Vellore-632 014
- India
| | - P. Mrudula
- Centre for Nanobiotechnology
- VIT University
- Vellore-632 014
- India
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22
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Wang C, Ma C, Mu C, Lin W. Tailor-made zwitterionic polyurethane coatings: microstructure, mechanical property and their antimicrobial performance. RSC Adv 2017. [DOI: 10.1039/c7ra04379a] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Introduction of zwitterions into polyurethane markedly increases micro-phase separation and tensile property, and endow the surfaces with anti-mold adhesion performance.
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Affiliation(s)
- Chunhua Wang
- Department of Biomass and Leather Engineering
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education
- Sichuan University
- Chengdu
- PR China
| | - Chunfeng Ma
- Faculty of Material and Science and Engineering
- South China University of Technology
- Guangzhou
- PR China
| | - Changdao Mu
- Department of Pharmaceutical and Bioengineering
- School of Chemical Engineering
- Sichuan University
- Chengdu
- PR China
| | - Wei Lin
- Department of Biomass and Leather Engineering
- Key Laboratory of Leather Chemistry and Engineering of Ministry of Education
- Sichuan University
- Chengdu
- PR China
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23
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Lakshmi DS, Trivedi N, Reddy CRK. Synthesis and characterization of seaweed cellulose derived carboxymethyl cellulose. Carbohydr Polym 2016; 157:1604-1610. [PMID: 27987874 DOI: 10.1016/j.carbpol.2016.11.042] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 11/11/2016] [Accepted: 11/12/2016] [Indexed: 11/20/2022]
Abstract
In the present study, cellulose (SWC) extracted from green seaweed Ulva fasciata was processed to synthesize carboxymethyl cellulose (SWCMC). The seaweed cellulose (∼15% DW) was first processed for α cellulose extraction (10.1% on DW) followed by the synthesis and characterization of SWCMC. Thin films were prepared using commercial CMC (CCMC), SWCMC and SWCMC-metal nanoparticle (2% wt/v) by solvent evaporation technique. Films were studied for molecular weight, degree of carboxylation, viscosity and characterized by FT-IR and TGA. AFM surface morphology of SWCMC-metal nanoparticle film confirms the uniform distribution of sphere shaped metal nanoparticle on the film surface with the size in the range of 50-75nm. Further, SWCMC film showed antimicrobial activity when prepared with Ag and leaf extract of Azadirachta indica. The biodegradable nature of SWCMC film was confirmed by growing marine fungus Cladosporium spherospermum on CMC agar plates. Thus, SWCMC films exhibit potential applications in cosmetic, food, textiles, medical, agricultural and pharmaceutical industries.
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Affiliation(s)
| | - Nitin Trivedi
- Division of Marine Biotechnology and Ecology, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India; Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - C R K Reddy
- Division of Marine Biotechnology and Ecology, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India; Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
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