Cashew-gum-based silver nanoparticles and palygorskite as green nanocomposites for antibacterial applications
Nanocomposite materials have been proposed to enhance the properties of different materials. In this study, palygorskite (Pal) clay is proposed as a support matrix for silver nanoparticles stabilised with cashew gum (Anacardium occidentale L.) (AgNPs-CG), producing the Pal/AgNPs-CG nanocomposite, wh...
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| Veröffentlicht in: | Materials Science & Engineering C 2020-10, Vol.115, p.110927, Article 110927 |
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| creator | Araújo, Cristiany Marinho das Virgens Santana, Moisés do Nascimento Cavalcante, Antonio Nunes, Lívio César Cunha Bertolino, Luiz Carlos de Sousa Brito, Carla Adriana Rodrigues Barreto, Humberto Medeiros Eiras, Carla |
| description | Nanocomposite materials have been proposed to enhance the properties of different materials. In this study, palygorskite (Pal) clay is proposed as a support matrix for silver nanoparticles stabilised with cashew gum (Anacardium occidentale L.) (AgNPs-CG), producing the Pal/AgNPs-CG nanocomposite, whose bactericidal activity was studied. AgNPs-CG was synthesised using a green method in which CG acted as a reducing and stabilising agent for these nanostructures. AgNPs-CGs were subsequently characterised then adsorbed to the Pal surface, which was previously treated to remove impurities such as quartz. Pal and Pal/AgNPs-CG were characterised by X-ray diffraction, specific surface area, thermal analysis, Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive spectroscopy, and transmission electron microscopy. The antibacterial activity assay by the direct contact method showed that the synergistic effect of the combination of AgNPs-CG and Pal increased the bactericidal effect of the nanomaterial compared with the AgNPs-CG activity, reaching a percentage inhibition of up to 70.2% against E. coli and 85.3% against S. aureus. Nanocomposite atoxicity was demonstrated by the Artemia Salina model. Thus, the Pal/AgNPs-CG nanocomposite emerges as a nanomaterial with potential antibacterial applications.
[Display omitted]
•Palirgoskite (Pal) was used as support for immobilization of AgNPs.•AgNPs were synthesised via green synthesis method using cashew gum (CG) (from Anacardium occidentale L.).•Pal-AgNPs-CG nanocomposite showed excellent antibacterial effect against E. coli and S. aureus bacteria.•Preliminary toxicity tests have shown that nanocomposite is nontoxic. |
| doi_str_mv | 10.1016/j.msec.2020.110927 |
| format | Article |
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[Display omitted]
•Palirgoskite (Pal) was used as support for immobilization of AgNPs.•AgNPs were synthesised via green synthesis method using cashew gum (CG) (from Anacardium occidentale L.).•Pal-AgNPs-CG nanocomposite showed excellent antibacterial effect against E. coli and S. aureus bacteria.•Preliminary toxicity tests have shown that nanocomposite is nontoxic.</description><identifier>ISSN: 0928-4931</identifier><identifier>EISSN: 1873-0191</identifier><identifier>DOI: 10.1016/j.msec.2020.110927</identifier><identifier>PMID: 32600678</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Anacardium - chemistry ; Anti-Bacterial Agents ; Antibacterial activity ; Antibacterial agent ; Artemia ; Bactericidal activity ; Biopolymer ; Clay minerals ; E coli ; Electron microscopy ; Escherichia coli - drug effects ; Fourier analysis ; Fourier transforms ; Green Chemistry Technology ; Green synthesis ; Gums ; Impurities ; Infrared analysis ; Infrared spectroscopy ; Magnesium Compounds - chemistry ; Materials science ; Metal Nanoparticles - chemistry ; Microbial Sensitivity Tests ; Microscopy ; Microscopy, Electron, Scanning ; Microscopy, Electron, Transmission ; Nanocomposite ; Nanocomposites ; Nanocomposites - chemistry ; Nanomaterials ; Nanoparticles ; Plant Gums - chemistry ; Scanning electron microscopy ; Silicon Compounds - chemistry ; Silver ; Silver - chemistry ; Silver - pharmacology ; Spectrometry, X-Ray Emission ; Spectroscopy, Fourier Transform Infrared ; Spectrum analysis ; Stabilizers (agents) ; Staphylococcus aureus - drug effects ; Synergistic effect ; Thermal analysis ; Transmission electron microscopy ; X-Ray Diffraction</subject><ispartof>Materials Science & Engineering C, 2020-10, Vol.115, p.110927, Article 110927</ispartof><rights>2020 Elsevier B.V.</rights><rights>Copyright © 2020 Elsevier B.V. All rights reserved.</rights><rights>Copyright Elsevier BV Oct 2020</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c384t-63604bc8d2fb9dc2caa3277ed2aabc7b664a7e775ab454379f0d423e83ecf5d43</citedby><cites>FETCH-LOGICAL-c384t-63604bc8d2fb9dc2caa3277ed2aabc7b664a7e775ab454379f0d423e83ecf5d43</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0928493120300539$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,65309</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/32600678$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Araújo, Cristiany Marinho</creatorcontrib><creatorcontrib>das Virgens Santana, Moisés</creatorcontrib><creatorcontrib>do Nascimento Cavalcante, Antonio</creatorcontrib><creatorcontrib>Nunes, Lívio César Cunha</creatorcontrib><creatorcontrib>Bertolino, Luiz Carlos</creatorcontrib><creatorcontrib>de Sousa Brito, Carla Adriana Rodrigues</creatorcontrib><creatorcontrib>Barreto, Humberto Medeiros</creatorcontrib><creatorcontrib>Eiras, Carla</creatorcontrib><title>Cashew-gum-based silver nanoparticles and palygorskite as green nanocomposites for antibacterial applications</title><title>Materials Science & Engineering C</title><addtitle>Mater Sci Eng C Mater Biol Appl</addtitle><description>Nanocomposite materials have been proposed to enhance the properties of different materials. In this study, palygorskite (Pal) clay is proposed as a support matrix for silver nanoparticles stabilised with cashew gum (Anacardium occidentale L.) (AgNPs-CG), producing the Pal/AgNPs-CG nanocomposite, whose bactericidal activity was studied. AgNPs-CG was synthesised using a green method in which CG acted as a reducing and stabilising agent for these nanostructures. AgNPs-CGs were subsequently characterised then adsorbed to the Pal surface, which was previously treated to remove impurities such as quartz. Pal and Pal/AgNPs-CG were characterised by X-ray diffraction, specific surface area, thermal analysis, Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive spectroscopy, and transmission electron microscopy. The antibacterial activity assay by the direct contact method showed that the synergistic effect of the combination of AgNPs-CG and Pal increased the bactericidal effect of the nanomaterial compared with the AgNPs-CG activity, reaching a percentage inhibition of up to 70.2% against E. coli and 85.3% against S. aureus. Nanocomposite atoxicity was demonstrated by the Artemia Salina model. Thus, the Pal/AgNPs-CG nanocomposite emerges as a nanomaterial with potential antibacterial applications.
[Display omitted]
•Palirgoskite (Pal) was used as support for immobilization of AgNPs.•AgNPs were synthesised via green synthesis method using cashew gum (CG) (from Anacardium occidentale L.).•Pal-AgNPs-CG nanocomposite showed excellent antibacterial effect against E. coli and S. aureus bacteria.•Preliminary toxicity tests have shown that nanocomposite is nontoxic.</description><subject>Anacardium - chemistry</subject><subject>Anti-Bacterial Agents</subject><subject>Antibacterial activity</subject><subject>Antibacterial agent</subject><subject>Artemia</subject><subject>Bactericidal activity</subject><subject>Biopolymer</subject><subject>Clay minerals</subject><subject>E coli</subject><subject>Electron microscopy</subject><subject>Escherichia coli - drug effects</subject><subject>Fourier analysis</subject><subject>Fourier transforms</subject><subject>Green Chemistry Technology</subject><subject>Green synthesis</subject><subject>Gums</subject><subject>Impurities</subject><subject>Infrared analysis</subject><subject>Infrared spectroscopy</subject><subject>Magnesium Compounds - 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chemistry</topic><topic>Anti-Bacterial Agents</topic><topic>Antibacterial activity</topic><topic>Antibacterial agent</topic><topic>Artemia</topic><topic>Bactericidal activity</topic><topic>Biopolymer</topic><topic>Clay minerals</topic><topic>E coli</topic><topic>Electron microscopy</topic><topic>Escherichia coli - drug effects</topic><topic>Fourier analysis</topic><topic>Fourier transforms</topic><topic>Green Chemistry Technology</topic><topic>Green synthesis</topic><topic>Gums</topic><topic>Impurities</topic><topic>Infrared analysis</topic><topic>Infrared spectroscopy</topic><topic>Magnesium Compounds - chemistry</topic><topic>Materials science</topic><topic>Metal Nanoparticles - chemistry</topic><topic>Microbial Sensitivity Tests</topic><topic>Microscopy</topic><topic>Microscopy, Electron, Scanning</topic><topic>Microscopy, Electron, Transmission</topic><topic>Nanocomposite</topic><topic>Nanocomposites</topic><topic>Nanocomposites - chemistry</topic><topic>Nanomaterials</topic><topic>Nanoparticles</topic><topic>Plant Gums - 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In this study, palygorskite (Pal) clay is proposed as a support matrix for silver nanoparticles stabilised with cashew gum (Anacardium occidentale L.) (AgNPs-CG), producing the Pal/AgNPs-CG nanocomposite, whose bactericidal activity was studied. AgNPs-CG was synthesised using a green method in which CG acted as a reducing and stabilising agent for these nanostructures. AgNPs-CGs were subsequently characterised then adsorbed to the Pal surface, which was previously treated to remove impurities such as quartz. Pal and Pal/AgNPs-CG were characterised by X-ray diffraction, specific surface area, thermal analysis, Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive spectroscopy, and transmission electron microscopy. The antibacterial activity assay by the direct contact method showed that the synergistic effect of the combination of AgNPs-CG and Pal increased the bactericidal effect of the nanomaterial compared with the AgNPs-CG activity, reaching a percentage inhibition of up to 70.2% against E. coli and 85.3% against S. aureus. Nanocomposite atoxicity was demonstrated by the Artemia Salina model. Thus, the Pal/AgNPs-CG nanocomposite emerges as a nanomaterial with potential antibacterial applications.
[Display omitted]
•Palirgoskite (Pal) was used as support for immobilization of AgNPs.•AgNPs were synthesised via green synthesis method using cashew gum (CG) (from Anacardium occidentale L.).•Pal-AgNPs-CG nanocomposite showed excellent antibacterial effect against E. coli and S. aureus bacteria.•Preliminary toxicity tests have shown that nanocomposite is nontoxic.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>32600678</pmid><doi>10.1016/j.msec.2020.110927</doi></addata></record> |
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| subjects | Anacardium - chemistry Anti-Bacterial Agents Antibacterial activity Antibacterial agent Artemia Bactericidal activity Biopolymer Clay minerals E coli Electron microscopy Escherichia coli - drug effects Fourier analysis Fourier transforms Green Chemistry Technology Green synthesis Gums Impurities Infrared analysis Infrared spectroscopy Magnesium Compounds - chemistry Materials science Metal Nanoparticles - chemistry Microbial Sensitivity Tests Microscopy Microscopy, Electron, Scanning Microscopy, Electron, Transmission Nanocomposite Nanocomposites Nanocomposites - chemistry Nanomaterials Nanoparticles Plant Gums - chemistry Scanning electron microscopy Silicon Compounds - chemistry Silver Silver - chemistry Silver - pharmacology Spectrometry, X-Ray Emission Spectroscopy, Fourier Transform Infrared Spectrum analysis Stabilizers (agents) Staphylococcus aureus - drug effects Synergistic effect Thermal analysis Transmission electron microscopy X-Ray Diffraction |
| title | Cashew-gum-based silver nanoparticles and palygorskite as green nanocomposites for antibacterial applications |
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