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Silver nanoparticle synthesis by Acalypha wilkesiana extract: phytochemical screening, characterization, influence of operational parameters, and preliminary antibacterial testing.
Heliyon. 2019 Oct; 5(10):e02517.H

Abstract

Single pot green synthesis of silver nanoparticles (AgNPs) was successfully carried out using medicinal plant extract of Acalypha wilkesiana via bottom-up approach. Five imperative operational parameters (pH, contact time, concentration, volume ratio and temperature) pivotal to the synthesis of silver nanoparticles were investigated. The study showed pH 9, 90 min contact time, 0.001 M Ag+ concentration, volume ratio 1:9 (extract: Ag+ solution), and temperature between 90 - 100 °C were important for the synthesis of Acalypha wilkesiana silver nanoparticles (AW-AgNPs). Phytochemical screening confirmed the presence of saponins, flavonoids, phenols and triterpenes for A. wilkesiana. These phytomolecules served as both capping and stabilizing agent in the green synthesis of silver nanoparticles. AW-AgNPs was characterized by UV-Vis Spectroscopy, Fourier Transform Infrared (FTIR) Spectroscopy and Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and Energy Dispersive X-ray (EDX). The surface Plasmon resonance (SPR) was observed at 450 nm which is a characteristic absorbance region of AW-AgNPs formation as a result of the collective oscillation of free electron of silver nanoparticles. FTIR Spectroscopy confirmed the presence of functional groups responsible for bioreduction of Ag+. SEM and TEM results confirmed a well dispersed AW-AgNPs of spherical shape. EDX shows the elemental distribution and confirmed AgNPs with a characteristic intense peak at 3.0 keV. AW-AgNPs showed significant inhibition against selected Gram negative and Gram positive prevailing bacteria. AW-AgNPs can therefore be recommended as potential antimicrobial and therapeutic agent against multidrug resistant pathogens.

Authors+Show Affiliations

Industrial Chemistry Programme, Nanotechnology Laboratory, Department of Physical Sciences, (Science and Technology Research Cluster), College of Pure and Applied Sciences, Landmark University, P.M.B.1001, Omu-Aran, Kwara State, Nigeria.Department of Industrial Chemistry, University of Ilorin, P.M.B 1515, Unilorin, Nigeria.School of Postgraduate Studies, Landmark University, P.M.B.1001, Omu-Aran, Kwara State, Nigeria.Department of Biological Sciences, Microbiology Programme, Landmark University, Omu-Aran, Nigeria.National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, Oxford, MS, USA. Department of Applied Chemistry, Federal University Dutsin-Ma, Katsina State, Nigeria.Industrial Chemistry Programme, Nanotechnology Laboratory, Department of Physical Sciences, (Science and Technology Research Cluster), College of Pure and Applied Sciences, Landmark University, P.M.B.1001, Omu-Aran, Kwara State, Nigeria.Industrial Chemistry Programme, Nanotechnology Laboratory, Department of Physical Sciences, (Science and Technology Research Cluster), College of Pure and Applied Sciences, Landmark University, P.M.B.1001, Omu-Aran, Kwara State, Nigeria.Industrial Chemistry Programme, Nanotechnology Laboratory, Department of Physical Sciences, (Science and Technology Research Cluster), College of Pure and Applied Sciences, Landmark University, P.M.B.1001, Omu-Aran, Kwara State, Nigeria.Department of Agricultural and Biosystems Engineering, College of Engineering, Landmark University, P.M.B.1001, Omu-Aran, Kwara State, Nigeria.Department of Chemistry, Covenant University, P.M.B. 1023, Ota, Ogun State, Nigeria.Jawaharlal Nehru University, School of Life Sciences, Laboratory of Genetic Manipulation for Stress Alleviation and Value Addition in Plants, New Delhi, 110067, India.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31667378

Citation

Dada, Adewumi Oluwasogo, et al. "Silver Nanoparticle Synthesis By Acalypha Wilkesiana Extract: Phytochemical Screening, Characterization, Influence of Operational Parameters, and Preliminary Antibacterial Testing." Heliyon, vol. 5, no. 10, 2019, pp. e02517.
Dada AO, Adekola FA, Dada FE, et al. Silver nanoparticle synthesis by Acalypha wilkesiana extract: phytochemical screening, characterization, influence of operational parameters, and preliminary antibacterial testing. Heliyon. 2019;5(10):e02517.
Dada, A. O., Adekola, F. A., Dada, F. E., Adelani-Akande, A. T., Bello, M. O., Okonkwo, C. R., Inyinbor, A. A., Oluyori, A. P., Olayanju, A., Ajanaku, K. O., & Adetunji, C. O. (2019). Silver nanoparticle synthesis by Acalypha wilkesiana extract: phytochemical screening, characterization, influence of operational parameters, and preliminary antibacterial testing. Heliyon, 5(10), e02517. https://doi.org/10.1016/j.heliyon.2019.e02517
Dada AO, et al. Silver Nanoparticle Synthesis By Acalypha Wilkesiana Extract: Phytochemical Screening, Characterization, Influence of Operational Parameters, and Preliminary Antibacterial Testing. Heliyon. 2019;5(10):e02517. PubMed PMID: 31667378.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Silver nanoparticle synthesis by Acalypha wilkesiana extract: phytochemical screening, characterization, influence of operational parameters, and preliminary antibacterial testing. AU - Dada,Adewumi Oluwasogo, AU - Adekola,Folahan Amoo, AU - Dada,Fehintoluwa Elizabeth, AU - Adelani-Akande,Adunola Tabitha, AU - Bello,Micheal Oluwasesan, AU - Okonkwo,Chidiogo Rita, AU - Inyinbor,Adejumoke Abosede, AU - Oluyori,Abimbola Peter, AU - Olayanju,Adeniyi, AU - Ajanaku,Kolawole Oluseyi, AU - Adetunji,Charles Oluwaseun, Y1 - 2019/10/02/ PY - 2018/08/30/received PY - 2019/06/28/revised PY - 2019/09/20/accepted PY - 2019/11/1/entrez PY - 2019/11/2/pubmed PY - 2019/11/2/medline KW - Acalypha wilkesia KW - Analytical chemistry KW - Antimicrobial studies KW - Biotechnology KW - Environmental health KW - Materials chemistry KW - Nanomaterials KW - Operational parameters KW - Organic chemistry KW - Pharmaceutical chemistry KW - Pharmaceutical science KW - Pharmacology KW - Physical chemistry KW - Silver nanoparticles SP - e02517 EP - e02517 JF - Heliyon JO - Heliyon VL - 5 IS - 10 N2 - Single pot green synthesis of silver nanoparticles (AgNPs) was successfully carried out using medicinal plant extract of Acalypha wilkesiana via bottom-up approach. Five imperative operational parameters (pH, contact time, concentration, volume ratio and temperature) pivotal to the synthesis of silver nanoparticles were investigated. The study showed pH 9, 90 min contact time, 0.001 M Ag+ concentration, volume ratio 1:9 (extract: Ag+ solution), and temperature between 90 - 100 °C were important for the synthesis of Acalypha wilkesiana silver nanoparticles (AW-AgNPs). Phytochemical screening confirmed the presence of saponins, flavonoids, phenols and triterpenes for A. wilkesiana. These phytomolecules served as both capping and stabilizing agent in the green synthesis of silver nanoparticles. AW-AgNPs was characterized by UV-Vis Spectroscopy, Fourier Transform Infrared (FTIR) Spectroscopy and Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and Energy Dispersive X-ray (EDX). The surface Plasmon resonance (SPR) was observed at 450 nm which is a characteristic absorbance region of AW-AgNPs formation as a result of the collective oscillation of free electron of silver nanoparticles. FTIR Spectroscopy confirmed the presence of functional groups responsible for bioreduction of Ag+. SEM and TEM results confirmed a well dispersed AW-AgNPs of spherical shape. EDX shows the elemental distribution and confirmed AgNPs with a characteristic intense peak at 3.0 keV. AW-AgNPs showed significant inhibition against selected Gram negative and Gram positive prevailing bacteria. AW-AgNPs can therefore be recommended as potential antimicrobial and therapeutic agent against multidrug resistant pathogens. SN - 2405-8440 UR - https://www.unboundmedicine.com/medline/citation/31667378/Silver_nanoparticle_synthesis_by_Acalypha_wilkesiana_extract:_phytochemical_screening_characterization_influence_of_operational_parameters_and_preliminary_antibacterial_testing_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S2405-8440(19)36177-8 DB - PRIME DP - Unbound Medicine ER -
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