Green Synthesis of Silver and Copper Nanoparticles Using Ascorbic Acid and Chitosan for Antimicrobial Application

Silver and copper nanoparticles were produced by chemical reduction of their respective nitrates by ascorbic acid in the presence of chitosan using microwave heating. Particle size was shown to increase by increasing the concentration of nitrate and reducing the chitosan concentration. Surface zet...

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Main Authors:	Norashikin, Mat Zain, Stapley, A. G. F., Shama, G.
Format:	Article
Published:	Elsevier Ltd 2014
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/8138/ http://umpir.ump.edu.my/id/eprint/8138/ http://umpir.ump.edu.my/id/eprint/8138/

id	ump-8138
recordtype	eprints
spelling	ump-81382018-03-26T08:30:10Z http://umpir.ump.edu.my/id/eprint/8138/ Green Synthesis of Silver and Copper Nanoparticles Using Ascorbic Acid and Chitosan for Antimicrobial Application Norashikin, Mat Zain Stapley, A. G. F. Shama, G. TP Chemical technology Silver and copper nanoparticles were produced by chemical reduction of their respective nitrates by ascorbic acid in the presence of chitosan using microwave heating. Particle size was shown to increase by increasing the concentration of nitrate and reducing the chitosan concentration. Surface zeta potentials were positive for all nanoparticles produced and these varied from 27.8 to 33.8 mV.Antibacterial activities of Ag, Cu, mixtures of Ag and Cu, and Ag/Cu bimetallic nanoparticles were tested using Bacillus subtilis and Escherichia coli. Of the two, B. subtilis proved more susceptible under all conditions investigated. Silver nanoparticles displayed higher activity than copper nanoparticles and mixtures of nanoparticles of the same mean particle size. However when compared on an equal concentration basis Cu nanoparticles proved more lethal to the bacteria due to a higher surface area. The highest antibacterial activity was obtained with bimetallic Ag/Cu nanoparticles with minimum inhibitory concentrations (MIC) of 0.054 and 0.076 mg/L against B. subtilis and E. coli, respectively. Elsevier Ltd 2014 Article PeerReviewed Norashikin, Mat Zain and Stapley, A. G. F. and Shama, G. (2014) Green Synthesis of Silver and Copper Nanoparticles Using Ascorbic Acid and Chitosan for Antimicrobial Application. Carbohydrate Polymers, 112. pp. 195-202. ISSN 0144-8617 http://dx.doi.org/10.1016/j.carbpol.2014.05.081 DOI: 10.1016/j.carbpol.2014.05.081
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
topic	TP Chemical technology
spellingShingle	TP Chemical technology Norashikin, Mat Zain Stapley, A. G. F. Shama, G. Green Synthesis of Silver and Copper Nanoparticles Using Ascorbic Acid and Chitosan for Antimicrobial Application
description	Silver and copper nanoparticles were produced by chemical reduction of their respective nitrates by ascorbic acid in the presence of chitosan using microwave heating. Particle size was shown to increase by increasing the concentration of nitrate and reducing the chitosan concentration. Surface zeta potentials were positive for all nanoparticles produced and these varied from 27.8 to 33.8 mV.Antibacterial activities of Ag, Cu, mixtures of Ag and Cu, and Ag/Cu bimetallic nanoparticles were tested using Bacillus subtilis and Escherichia coli. Of the two, B. subtilis proved more susceptible under all conditions investigated. Silver nanoparticles displayed higher activity than copper nanoparticles and mixtures of nanoparticles of the same mean particle size. However when compared on an equal concentration basis Cu nanoparticles proved more lethal to the bacteria due to a higher surface area. The highest antibacterial activity was obtained with bimetallic Ag/Cu nanoparticles with minimum inhibitory concentrations (MIC) of 0.054 and 0.076 mg/L against B. subtilis and E. coli, respectively.
format	Article
author	Norashikin, Mat Zain Stapley, A. G. F. Shama, G.
author_facet	Norashikin, Mat Zain Stapley, A. G. F. Shama, G.
author_sort	Norashikin, Mat Zain
title	Green Synthesis of Silver and Copper Nanoparticles Using Ascorbic Acid and Chitosan for Antimicrobial Application
title_short	Green Synthesis of Silver and Copper Nanoparticles Using Ascorbic Acid and Chitosan for Antimicrobial Application
title_full	Green Synthesis of Silver and Copper Nanoparticles Using Ascorbic Acid and Chitosan for Antimicrobial Application
title_fullStr	Green Synthesis of Silver and Copper Nanoparticles Using Ascorbic Acid and Chitosan for Antimicrobial Application
title_full_unstemmed	Green Synthesis of Silver and Copper Nanoparticles Using Ascorbic Acid and Chitosan for Antimicrobial Application
title_sort	green synthesis of silver and copper nanoparticles using ascorbic acid and chitosan for antimicrobial application
publisher	Elsevier Ltd
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/8138/ http://umpir.ump.edu.my/id/eprint/8138/ http://umpir.ump.edu.my/id/eprint/8138/
first_indexed	2023-09-18T22:05:26Z
last_indexed	2023-09-18T22:05:26Z
_version_	1777414676733231104

Green Synthesis of Silver and Copper Nanoparticles Using Ascorbic Acid and Chitosan for Antimicrobial Application

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