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Effect of annealing temperature on antimicrobial and structural properties of bio-synthesized zinc oxide nanoparticles using flower extract of Anchusa italica

The use of nontoxic biological compounds in the synthesis of nanomaterials is an economic and eco-friendly approach. The present work was undertaken to develop zinc oxide nanoparticles (ZnO-NPs) by a green method using simple precursor from the solution consisting of zinc acetate and the flower extr...

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Main Authors: Azizi, S., Mohamad, R., Bahadoran, A., Bayat, S., Rahim, R.A., Ariff, A., Saad, W.Z.
Format: Article
Published: Elsevier 2016
Subjects:
Q Science (General)
R Medicine
Online Access:http://eprints.um.edu.my/18411/
https://doi.org/10.1016/j.jphotobiol.2016.06.007
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spelling my.um.eprints.184112017-12-04T03:43:03Z http://eprints.um.edu.my/18411/ Effect of annealing temperature on antimicrobial and structural properties of bio-synthesized zinc oxide nanoparticles using flower extract of Anchusa italica Azizi, S. Mohamad, R. Bahadoran, A. Bayat, S. Rahim, R.A. Ariff, A. Saad, W.Z. Q Science (General) R Medicine The use of nontoxic biological compounds in the synthesis of nanomaterials is an economic and eco-friendly approach. The present work was undertaken to develop zinc oxide nanoparticles (ZnO-NPs) by a green method using simple precursor from the solution consisting of zinc acetate and the flower extract of Anchusa italica (A. italica). Effect of annealing temperature on structural and antimicrobial properties was investigated. The crystalline structure of ZnO-NPs was shown using X-ray diffraction (XRD) analysis. Transmission electron microscopy (TEM) results showed that ZnO-NPs are hexagonal in shapes with mean particle size of ∼ 8 and ∼ 14 nm at 100 °C and 200 °C annealing temperatures respectively. The optical band gap was increased from 3.27 eV to 3.30 eV with the decreasing of the particle size. The antimicrobial activity of ZnO-NPs towards Gram positive (Bacillus megaterium and Stapphylococcus aureus) and Gram negative (Escherichia coli and Salmonella typhimurium) pathogens decreased with the increasing of the heat treating temperature. In vitro cytotoxicity studies on Vero cells, a dose dependent toxicity with non-toxic effect of concentration below 142 μg/mL was shown. The results indicated that A. italica is an appropriate reaction media to prepare ZnO-NPs for cosmetic and bio-medical productions. Elsevier 2016 Article PeerReviewed Azizi, S. and Mohamad, R. and Bahadoran, A. and Bayat, S. and Rahim, R.A. and Ariff, A. and Saad, W.Z. (2016) Effect of annealing temperature on antimicrobial and structural properties of bio-synthesized zinc oxide nanoparticles using flower extract of Anchusa italica. Journal of Photochemistry and Photobiology B Biology, 161. pp. 441-449. ISSN 1011-1344 https://doi.org/10.1016/j.jphotobiol.2016.06.007 doi:10.1016/j.jphotobiol.2016.06.007
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
R Medicine
spellingShingle Q Science (General)
R Medicine
Azizi, S.
Mohamad, R.
Bahadoran, A.
Bayat, S.
Rahim, R.A.
Ariff, A.
Saad, W.Z.
Effect of annealing temperature on antimicrobial and structural properties of bio-synthesized zinc oxide nanoparticles using flower extract of Anchusa italica
description The use of nontoxic biological compounds in the synthesis of nanomaterials is an economic and eco-friendly approach. The present work was undertaken to develop zinc oxide nanoparticles (ZnO-NPs) by a green method using simple precursor from the solution consisting of zinc acetate and the flower extract of Anchusa italica (A. italica). Effect of annealing temperature on structural and antimicrobial properties was investigated. The crystalline structure of ZnO-NPs was shown using X-ray diffraction (XRD) analysis. Transmission electron microscopy (TEM) results showed that ZnO-NPs are hexagonal in shapes with mean particle size of ∼ 8 and ∼ 14 nm at 100 °C and 200 °C annealing temperatures respectively. The optical band gap was increased from 3.27 eV to 3.30 eV with the decreasing of the particle size. The antimicrobial activity of ZnO-NPs towards Gram positive (Bacillus megaterium and Stapphylococcus aureus) and Gram negative (Escherichia coli and Salmonella typhimurium) pathogens decreased with the increasing of the heat treating temperature. In vitro cytotoxicity studies on Vero cells, a dose dependent toxicity with non-toxic effect of concentration below 142 μg/mL was shown. The results indicated that A. italica is an appropriate reaction media to prepare ZnO-NPs for cosmetic and bio-medical productions.
format Article
author Azizi, S.
Mohamad, R.
Bahadoran, A.
Bayat, S.
Rahim, R.A.
Ariff, A.
Saad, W.Z.
author_facet Azizi, S.
Mohamad, R.
Bahadoran, A.
Bayat, S.
Rahim, R.A.
Ariff, A.
Saad, W.Z.
author_sort Azizi, S.
title Effect of annealing temperature on antimicrobial and structural properties of bio-synthesized zinc oxide nanoparticles using flower extract of Anchusa italica
title_short Effect of annealing temperature on antimicrobial and structural properties of bio-synthesized zinc oxide nanoparticles using flower extract of Anchusa italica
title_full Effect of annealing temperature on antimicrobial and structural properties of bio-synthesized zinc oxide nanoparticles using flower extract of Anchusa italica
title_fullStr Effect of annealing temperature on antimicrobial and structural properties of bio-synthesized zinc oxide nanoparticles using flower extract of Anchusa italica
title_full_unstemmed Effect of annealing temperature on antimicrobial and structural properties of bio-synthesized zinc oxide nanoparticles using flower extract of Anchusa italica
title_sort effect of annealing temperature on antimicrobial and structural properties of bio-synthesized zinc oxide nanoparticles using flower extract of anchusa italica
publisher Elsevier
publishDate 2016
url http://eprints.um.edu.my/18411/
https://doi.org/10.1016/j.jphotobiol.2016.06.007
_version_ 1643690697777217536
score 13.211869

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