Corn cob silica as an antibacterial support for silver nanoparticles: efficacy on Escherichia coli and Listeria monocytogenes

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dc.contributor.author Shim, Jaehong
dc.contributor.author Mazumder, Payal
dc.contributor.author Kumar,Manish
dc.date.accessioned 2018-09-22T09:56:53Z
dc.date.available 2018-09-22T09:56:53Z
dc.date.issued 2018-09
dc.identifier.citation Shim, Jaehong; Mazumder, Payal and Kumar, Manish, "Corn cob silica as an antibacterial support for silver nanoparticles: efficacy on Escherichia coli and Listeria monocytogenes", Environmental Monitoring and Assessment, DOI: 10.1007/s10661-018-6954-2, vol. 190, no. 10, Sep. 2018. en_US
dc.identifier.issn 0167-6369
dc.identifier.issn 1573-2959
dc.identifier.uri https://doi.org/10.1007/s10661-018-6954-2
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/3905
dc.description.abstract There is great potential to combine bioresource and recycled materials with nanotechnology for industrial and environmental applications. In a novel approach, silver (Ag) nanoparticles (Ag NPs) were imbedded on amine-functionalized silica obtained from corn cob (ACCS) to produce a composite material that can be used to inactivate bacteria. Transmission electron microscope (TEM) images show near-uniform ACCS particles (34.7 ± 8.6 nm diameter), with Ag NPs (5–10 nm diameter) homogenously dispersed on the surfaces. The potential of ACCS-Ag NPs to rapidly inactivate gram-negative Escherichia coli ATCC 8739 and gram-positive Listeria monocytogenes was investigated. A four-log (> 99.99%) inactivation of the E. coli was achieved within 30 min with 4 mg of ACCS-Ag NPs in a 40-mL PBS suspension (1 × 105 CFU/mL). Extended exposure of ACCS-Ag NP may be required to inactivate L. monocytogenes, suggesting the ACCS-Ag NP composite will be less practical for gram-positive bacteria due to thick cell wall and alternative formulations may need to be developed. Result shows that the potential of corn cob silica as an alternative, eco-friendly support matrix for applications such as bacterial inactivation. The Ag-imbedded, amine-functionalized corn cob silica demonstrates how bio-waste can be combined with nanotechnology to produce useful materials.
dc.description.statementofresponsibility by Jaehong Shim Payal Mazumder and Manish Kumar
dc.format.extent vol. 190, no. 10
dc.language.iso en en_US
dc.publisher Springer en_US
dc.subject Immobilization en_US
dc.subject Silver nanoparticle en_US
dc.subject Microbial inactivation en_US
dc.subject Engineered silica en_US
dc.subject Gram negative en_US
dc.subject Gram positive en_US
dc.title Corn cob silica as an antibacterial support for silver nanoparticles: efficacy on Escherichia coli and Listeria monocytogenes en_US
dc.type Article en_US
dc.relation.journal Environmental Monitoring and Assessment


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