Biosynthesis of selenium nanoparticles by Aspergillus niger

Noorbatcha, Ibrahim Ali and Rosena, Norol and Mohd. Salleh, Hamzah (2016) Biosynthesis of selenium nanoparticles by Aspergillus niger. In: 4th International Conference on Biotechnology Engineering 2016 (ICBioE 2016), 25th-27th July 2016, Kuala Lumpur.

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Abstract

Nanoparticles can be synthesized by biological, chemical and physical methods. There are several disadvantages of physical and chemical synthesis methods which include release of hazardous and toxic effluents and higher cost of production. The use of microbial factories for the production of nanoparticles is an emerging field with immense potential. The synthesis of nanoparticles using microbes has not been explored for the production of selenium nanoparticles. In this work Aspergillus niger (A. niger) was challenged with sodium selenite solution at different concentrations. After several screenings, the production of selenium nanoparticles was obtained by treating the biomass of A. niger with 1 mM concentration of sodium selenite at 37°C. An intense red color and the UV-vis spectrophotometer absorbance maximum at 226 nm wavelength were observed within 24 hours, indicating the formation of selenium nanoparticles. Further analysis by FESEM characterization showed spherical selenium nanoparticles with 60-100 nm size range. These results indicate that A. niger can be used as a versatile microbial factory for the synthesis of selenium nanoparticles.

Item Type:	Conference or Workshop Item (Plenary Papers)
Additional Information:	3704/51782 (ISBN: 978-983-42978-8-6)
Uncontrolled Keywords:	Aspergillus niger; selenium nanoparticles; microbial factories; FESEM; UV-vis spectra.
Subjects:	T Technology > TP Chemical technology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User:	Prof. Dr. Ibrahim Ali Noorbatcha
Date Deposited:	24 Aug 2016 11:29
Last Modified:	13 Jan 2017 16:14
URI:	http://irep.iium.edu.my/id/eprint/51782

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