Biosynthesis of silver nanoparticles by a Bacillus sp. of marine origin

• Autorzy: Janardhanan A. , Roshmi T. , Varghese R. T. , Soniya E. V. , Mathew J. , Radhakrishnan E. K.
• Języki publikacji: EN

Abstrakty

EN

This study was aimed to explore the nanoparticle synthesizing properties of a silver resistant Bacillus sp. isolated from a marine water sample. The 16SrDNA sequence analysis of the isolate proved it as a Bacillus strain. Very interestingly, the isolate was found to have the ability to form intracellular silver nanoparticles at room temperature within 24 hours. This was confirmed by the UV-Vis absorption analysis which showed a peak at 430 nm corresponding to the plasmon absorbance of silver nanoparticles. Further characterization of the nanoparticles was carried out by transmission electron microscopy (TEM) and scanning electron microscopy (SEM) analysis. The presence of silver nanoparticles with the size less than 100 nm was confirmed. These particles were found to be extremely stable as confirmed by the TEM analysis after three months of purification. So, the current study is the demonstration of an efficient synthesis of stable silver nanoparticles by a marine Bacillus strain.

Słowa kluczowe

EN

silver nanoparticle; biosynthesis; purification; marine Bacillus sp

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2013
• Tom: Vol. 31, No. 2
• Strony: 173--179
• Opis fizyczny: Bibliogr. 23 poz., rys., wykr.

Twórcy

autor

Janardhanan A.

autor

Roshmi T.

autor

Varghese R. T.

• Plant Molecular Biology, Rajiv Gandhi Centre for Biotechnology, Thycaud (PO), Poojappura, Thiruvananthapuram, Kerala, India – 695 014

autor

Soniya E. V.

• Plant Molecular Biology, Rajiv Gandhi Centre for Biotechnology, Thycaud (PO), Poojappura, Thiruvananthapuram, Kerala, India – 695 014

autor

Mathew J.

• School of Biosciences, Mahatma Gandhi University, PD Hills (PO), Kottayam, Kerala, India – 686 560

autor

Radhakrishnan E. K.

• School of Biosciences, Mahatma Gandhi University, PD Hills (PO), Kottayam, Kerala, India – 686 560

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