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Iron, copper and silver nanoparticles: green synthesis using green and black tea leaves extracts and evaluation of antibacterial, antifungal and aflatoxin B1 adsorption activity

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dc.contributor.author Asghar, Muhammad Asif
dc.contributor.author Zahir, Erum
dc.contributor.author Shahid, Syed Muhammad
dc.contributor.author Khan, Muhammad Naseem
dc.contributor.author Asgher, Muhammad Arif
dc.contributor.author Iqbal, Javed
dc.contributor.author Walker, Gavin M.
dc.date.accessioned 2018-02-23T12:42:35Z
dc.date.issued 2018
dc.identifier.uri http://hdl.handle.net/10344/6601
dc.description peer-reviewed en_US
dc.description.abstract The present study was aimed to account an eco-friendly synthesis of iron (Fe), copper (Cu) and silver (Ag) nanoparticles (NPs) using green tea and black tea leaves extracts. Synthesized NPs were characterized using SEM, FTIR, EDX and UV/Vis spectroscopy techniques. Antibacterial activity of NPs was assessed against methicillin- and vancomycin-resistance Staphylococcus aureus strains. Antifungal activity was investigated against Aspergillus flavus and A. parasiticus fungal species. Adsorbent capability with aflatoxin B1 (AFB1) was also assessed in solution. Ag-NPs showed superior antibacterial/antifungal activities and reduced the aflatoxins production in comparison to Fe-NPs and Cu-NPs. Adsorption capability of all NPs with AFB1 contamination was found in the order of Fe-NPs > Cu-NPs > Ag-NPs. The equilibrium data showed the favorability of Langmuir isotherm with the adsorption capacity (131–139 ng/mg), Cu-NPs (114–118 ng/mg) and Ag-NPs (110–115 ng/mg). Thermodynamic parameters and kinetic studies revealed that adsorption process is spontaneous, endothermic and followed the pseudo-second order. These results suggest that the synthesized NPs could be effectively utilize as an alternative antibacterial/antifungal agent against diseases caused by multiple drug resistant pathogens. In addition, these metal NPs may be utilize as a possible aflatoxins adsorbent in human food and animal feed such as rice, wheat, maize, red chillies and poultry feed. en_US
dc.language.iso eng en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries LWT- Food Science and Technology;90, p. 98-107
dc.relation.uri https://doi.org/10.1016/j.lwt.2017.12.009
dc.rights This is the author’s version of a work that was accepted for publication in LWT - Food, Science and Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in LWT - Food Science and Technology, 2018, 90, pp. 98-107, https://doi.org/10.1016/j.lwt.2017.12.009 en_US
dc.subject green synthesis en_US
dc.subject metal nanoparticles en_US
dc.subject antibacterial en_US
dc.subject antifungal en_US
dc.subject adsorption en_US
dc.title Iron, copper and silver nanoparticles: green synthesis using green and black tea leaves extracts and evaluation of antibacterial, antifungal and aflatoxin B1 adsorption activity en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1016/j.lwt.2017.12.009
dc.identifier.doi
dc.date.embargoEndDate 2018-12-06
dc.embargo.terms 2018-12-06 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 2740194


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