Biosynthesis and structural characterization of selenium nanoparticles mediated by Zooglea ramigera

Srivastava, Nishant; Mukhopadhyay, Mausumi

doi:10.1016/j.powtec.2013.03.050

Cited by 178 publications

(109 citation statements)

References 20 publications

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“…Other reported aerobic strains are Pseudomonas agglomerans, (Torres et al 2012), P. aeruginosa JS-11 (Dwivedi et al 2013), P. stutzeri (Lortie et al 1992), P. alcaliphila (Zhang et al 2011), Duganella sp., Agrobacterium sp. (Bajaj et al 2012), Zooglea ramigera (Srivastava and Mukhopadhyay 2013), Streptomyces minutiscleroticus M10A62 (Ramya et al 2015), Acinetobacter sp. E6.2 (Durán et al 2015), Comamonas testosteroni S44 (Zheng et al 2014), Klebsiella pneumonia (Fesharaki et al 2010), Lactobacillus sp, Bifidobacter sp., and Streptococcus thermophilus (Eszenyi et al 2011).…”

Section: Selenite Reduction and Biogenesis Of Selenium Nanoparticlesmentioning

confidence: 99%

“…Selenite-reducing bacteria have been isolated from a variety of environments including Mono Lake of California (Oremland et al 2004), Dead sea, a salt lake (Oremland et al 2004), Caspian sea of Iran (Shakibaie et al 2015), sediments of Cama-rones river from Atacama desert, Northern Chile (Torres et al 2012), activated sludge (Srivastava and Mukhopadhyay 2013), sludge of Taiyuan sewage plant, China (Li et al 2014), drainage slough from Nevada (Oremland et al 2004), and anaerobic granules from paper mill wastewater treating reactor (Jain et al 2015). In addition, from the soil of a antimony mine from Lengshuijiang, southern China (Zheng et al 2014), soil of a magnesite mine from Salem, India (Ramya et al 2015), soil of a coal mine from West Bengal, India (Dhanjal and Cameotra 2010), selenium laden agricultural soil of North-East Punjab, India (Bajaj et al 2012), soil of mangrove forest from Bhitarkanika, Orissa, India (Mishra et al 2011), rhizosphere soil of a selenium hyperaccumulator legume grown in seleniferous mine from Sardina, Italy (Lampis et al 2014), rhizosphere of wheat grown in herbicide contaminated soil (Dwivedi et al 2013), and rhizosphere of cereal plants grown in ash-derived volcanic soil of southern Chile (Durán et al 2015).…”

Section: Introductionmentioning

confidence: 99%

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Bacillus cereus, selenite-reducing bacterium from contaminated lake of an industrial area: a renewable nanofactory for the synthesis of selenium nanoparticles

Kora

2018

Bioresour. Bioprocess.

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Background: An attempt was made to isolate selenite-reducing bacteria from a contaminated lake that receives industrial effluents and domestic sewage. The isolated dominant bacterial strain AJK3 was identified as Bacillus cereus, based on biochemical characterization and 16S rDNA sequencing. The time dependent selenium removal at different selenite concentrations monitored with ICP-AES indicates the substantial selenite reduction capability of the isolated strain. The selenium nanoparticles produced during the bacterial reduction of selenite were analyzed with UV-visible spectroscopy, X-ray diffraction, transmission electron microscopy, zeta potential measurement, Fourier transform infrared spectroscopy and Raman spectroscopy. Results:The nanoparticle synthesis was confirmed from the red colour emergence in culture broth and wide UV-vis peaks. The produced nanoparticles were polydisperse, spherical, size varied from 50 to 150 nm and the mean particle size was about 93 nm. The amorphous nature of the generated nanoparticles was confirmed from the Raman spectroscopy, XRD and SAED patterns. The IR data and zeta potential values substantiated the protein capping of the produced nanoparticles. Conclusions:Thus, the present study suggests that the isolated bacterial strain can be exploited as a prospective, renewable, natural, nanofactory for the bacteriogenic synthesis of nanoparticles. Also, the study has application in bioremediation of selenite from the contaminated environment.

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Section: Selenite Reduction and Biogenesis Of Selenium Nanoparticlesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bacillus cereus, selenite-reducing bacterium from contaminated lake of an industrial area: a renewable nanofactory for the synthesis of selenium nanoparticles

Kora

2018

Bioresour. Bioprocess.

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“…It is a crucial cofactor of antioxidant enzymes such as glutathione peroxidases and thioredoxin reductases. 1,2 As the selenium nanoparticles (SeNPs) possess antimicrobial and anticancer properties, they can be used as nanomedicines. 3,4 Also, they exhibit less toxicity as compared to their inorganic and organic counterparts.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of selenium nanoparticles using<em> Acinetobacter</em> sp. SW30: optimization, characterization and its anticancer activity in breast cancer cells

Wadhwani

Gorain

Banerjee

et al. 2017

IJN

156

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The aim of this study was to synthesize selenium nanoparticles (SeNPs) using cell suspension and total cell protein of Acinetobacter sp. SW30 and optimize its synthesis by studying the influence of physiological and physicochemical parameters. Also, we aimed to compare its anticancer activity with that of chemically synthesized SeNPs in breast cancer cells. Cell suspension of Acinetobacter sp. SW30 was exposed to various physiological and physicochemical conditions in the presence of sodium selenite to study their effects on the synthesis and morphology of SeNPs. Breast cancer cells (4T1, MCF-7) and noncancer cells (NIH/3T3, HEK293) were exposed to different concentrations of SeNPs. The 18 h grown culture with 2.7×10 9 cfu/mL could synthesize amorphous nanospheres of size 78 nm at 1.5 mM and crystalline nanorods at above 2.0 mM Na 2 SeO 3 concentration. Polygonal-shaped SeNPs of average size 79 nm were obtained in the supernatant of 4 mg/mL of total cell protein of Acinetobacter sp. SW30. Chemical SeNPs showed more anticancer activity than SeNPs synthesized by Acinetobacter sp. SW30 (BSeNPs), but they were found to be toxic to noncancer cells also. However, BSeNPs were selective against breast cancer cells than chemical ones. Results suggest that BSeNPs are a good choice of selection as anticancer agents.

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“…1 Thus, the uses of Se compounds for anticancer therapy have been greatly explored during the last decade and results of studies have shown that Se compounds reduce the risk of various types of cancers, such as mammary, prostate, lung, colon, and liver cancers. 1,[4][5][6][7] The research findings also suggest that the concentration, chemical species, and redox potential of Se compounds are critical for…”

Section: Introductionmentioning

confidence: 88%

Anticancer activity of biostabilized selenium nanorods synthesized by Streptomyces bikiniensis strain Ess_amA-1

Ahmad¹,

Yasser²,

Sholkamy³

et al. 2015

IJN

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Selenium is an important component of human diet and a number of studies have declared its chemopreventive and therapeutic properties against cancer. However, very limited studies have been conducted about the properties of selenium nanostructured materials in comparison to other well-studied selenospecies. Here, we have shown that the anticancer property of biostabilized selenium nanorods (SeNrs) synthesized by applying a novel strain Ess_amA-1 of Streptomyces bikiniensis . The strain was grown aerobically with selenium dioxide and produced stable SeNrs with average particle size of 17 nm. The optical, structural, morphological, elemental, and functional characterizations of the SeNrs were carried out using techniques such as UV-vis spectrophotometry, transmission electron microscopy, energy dispersive X-ray spectrometry, and Fourier transform infrared spectrophotometry, respectively. The MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay revealed that the biosynthesized SeNrs induces cell death of Hep-G2 and MCF-7 human cancer cells. The lethal dose (LD 50% ) of SeNrs on Hep-G2 and MCF-7 cells was recorded at 75.96 μg/mL and 61.86 μg/mL, respectively. It can be concluded that S. bikiniensis strain Ess_amA-1 could be used as renewable bioresources of biosynthesis of anticancer SeNrs. A hypothetical mechanism for anticancer activity of SeNrs is also proposed.

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Biosynthesis and structural characterization of selenium nanoparticles mediated by Zooglea ramigera

Cited by 178 publications

References 20 publications

Bacillus cereus, selenite-reducing bacterium from contaminated lake of an industrial area: a renewable nanofactory for the synthesis of selenium nanoparticles

Bacillus cereus, selenite-reducing bacterium from contaminated lake of an industrial area: a renewable nanofactory for the synthesis of selenium nanoparticles

Green synthesis of selenium nanoparticles using<em> Acinetobacter</em> sp. SW30: optimization, characterization and its anticancer activity in breast cancer cells

Anticancer activity of biostabilized selenium nanorods synthesized by Streptomyces bikiniensis strain Ess_amA-1

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