Gold and silver nanoparticles from Trianthema decandra: synthesis, characterization, and antimicrobial properties

R Geethalakshmi, DVL SaradaDepartment of Biotechnology, School of Bioengineering, Sri Ramaswamy Memorial University, Kattankulathur, Tamil Nadu, IndiaBackground: There is an increasing commercial demand for nanoparticles due to their wide applicability in various markets, including medicine, catalys...

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Autores principales:	Geethalakshmi R, Sarada DV
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2012
Materias:	Medicine (General) R5-920
Acceso en línea:	https://doaj.org/article/861c750a35ac4547ba4f87c6b6a15929
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spelling	oai:doaj.org-article:861c750a35ac4547ba4f87c6b6a159292021-12-02T02:44:07ZGold and silver nanoparticles from Trianthema decandra: synthesis, characterization, and antimicrobial properties1176-91141178-2013https://doaj.org/article/861c750a35ac4547ba4f87c6b6a159292012-10-01T00:00:00Zhttp://www.dovepress.com/gold-and-silver-nanoparticles-from-trianthema-decandra-synthesis-chara-a11221https://doaj.org/toc/1176-9114https://doaj.org/toc/1178-2013R Geethalakshmi, DVL SaradaDepartment of Biotechnology, School of Bioengineering, Sri Ramaswamy Memorial University, Kattankulathur, Tamil Nadu, IndiaBackground: There is an increasing commercial demand for nanoparticles due to their wide applicability in various markets, including medicine, catalysis, electronics, chemistry, and energy. In this report, a simple and ecofriendly chemical reaction for the synthesis of gold and silver nanoparticles from Trianthema decandra (Aizoaceae) has been developed.Methods and results: On treatment of aqueous solutions containing chloroauric acid or silver nitrate with root extract of T. decandra, stable gold or silver nanoparticles were rapidly formed. The kinetics of reduction of gold and silver ions during the reaction was analyzed by ultraviolet-visible spectroscopy. Field emission-scanning electron microscopy showed formation of gold nanoparticles in various shapes, including spherical, cubical, triangular, and hexagonal, while silver nanoparticles were spherical. The size of the gold nanoparticles was 33&ndash;65 nm and that of the silver nanoparticles was 36&ndash;74 nm. Energy dispersive x-ray and Fourier transform infrared spectroscopy confirmed the presence of metallic gold and metallic silver in the respective nanoparticles. The antimicrobial properties of the synthesized nanoparticles were analyzed using the Kirby-Bauer method. The results show varied susceptibility of microorganisms to the gold and silver nanoparticles.Conclusion: It is believed that phytochemicals present in T. decandra extract reduce the silver and gold ions into metallic nanoparticles. This strategy reduces the cost of production and the environmental impact. The silver and gold nanoparticles formed showed strong activity against all microorganisms tested.Keywords: Trianthema decandra, gold, silver, nanoparticles, antimicrobial activityGeethalakshmi RSarada DVDove Medical PressarticleMedicine (General)R5-920ENInternational Journal of Nanomedicine, Vol 2012, Iss default, Pp 5375-5384 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine (General) R5-920
spellingShingle	Medicine (General) R5-920 Geethalakshmi R Sarada DV Gold and silver nanoparticles from Trianthema decandra: synthesis, characterization, and antimicrobial properties
description	R Geethalakshmi, DVL SaradaDepartment of Biotechnology, School of Bioengineering, Sri Ramaswamy Memorial University, Kattankulathur, Tamil Nadu, IndiaBackground: There is an increasing commercial demand for nanoparticles due to their wide applicability in various markets, including medicine, catalysis, electronics, chemistry, and energy. In this report, a simple and ecofriendly chemical reaction for the synthesis of gold and silver nanoparticles from Trianthema decandra (Aizoaceae) has been developed.Methods and results: On treatment of aqueous solutions containing chloroauric acid or silver nitrate with root extract of T. decandra, stable gold or silver nanoparticles were rapidly formed. The kinetics of reduction of gold and silver ions during the reaction was analyzed by ultraviolet-visible spectroscopy. Field emission-scanning electron microscopy showed formation of gold nanoparticles in various shapes, including spherical, cubical, triangular, and hexagonal, while silver nanoparticles were spherical. The size of the gold nanoparticles was 33&ndash;65 nm and that of the silver nanoparticles was 36&ndash;74 nm. Energy dispersive x-ray and Fourier transform infrared spectroscopy confirmed the presence of metallic gold and metallic silver in the respective nanoparticles. The antimicrobial properties of the synthesized nanoparticles were analyzed using the Kirby-Bauer method. The results show varied susceptibility of microorganisms to the gold and silver nanoparticles.Conclusion: It is believed that phytochemicals present in T. decandra extract reduce the silver and gold ions into metallic nanoparticles. This strategy reduces the cost of production and the environmental impact. The silver and gold nanoparticles formed showed strong activity against all microorganisms tested.Keywords: Trianthema decandra, gold, silver, nanoparticles, antimicrobial activity
format	article
author	Geethalakshmi R Sarada DV
author_facet	Geethalakshmi R Sarada DV
author_sort	Geethalakshmi R
title	Gold and silver nanoparticles from Trianthema decandra: synthesis, characterization, and antimicrobial properties
title_short	Gold and silver nanoparticles from Trianthema decandra: synthesis, characterization, and antimicrobial properties
title_full	Gold and silver nanoparticles from Trianthema decandra: synthesis, characterization, and antimicrobial properties
title_fullStr	Gold and silver nanoparticles from Trianthema decandra: synthesis, characterization, and antimicrobial properties
title_full_unstemmed	Gold and silver nanoparticles from Trianthema decandra: synthesis, characterization, and antimicrobial properties
title_sort	gold and silver nanoparticles from trianthema decandra: synthesis, characterization, and antimicrobial properties
publisher	Dove Medical Press
publishDate	2012
url	https://doaj.org/article/861c750a35ac4547ba4f87c6b6a15929
work_keys_str_mv	AT geethalakshmir goldandsilvernanoparticlesfromtrianthemadecandrasynthesischaracterizationandantimicrobialproperties AT saradadv goldandsilvernanoparticlesfromtrianthemadecandrasynthesischaracterizationandantimicrobialproperties
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Gold and silver nanoparticles from Trianthema decandra: synthesis, characterization, and antimicrobial properties

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