Tellurite biotransformation and detoxification by Shewanella baltica with simultaneous synthesis of tellurium nanorods exhibiting photo-catalytic and anti-biofilm activity

Vaigankar, Diviya Chandrakant; Dubey, Santosh Kumar; Mujawar, Sajiya Yusuf; D’Costa, Avelyno H.; Shyama, S.K.

doi:10.1016/j.ecoenv.2018.08.111

Cited by 45 publications

(24 citation statements)

References 49 publications

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“…For instance, Shakibaie et al described the antioxidant and antimicrobial properties of biologically synthesized tellurium nanorods (TeNRs) [272]. Moreover, another study reveals the antimicrobial and anticancer properties of citrus juice-mediated synthesized TeNPs [62] while the S. baltica-synthesized TeNRs exhibit an excellent photocatalytic and anti-biofilm activity to counter potential human pathogens [59]. The next graphic summarizes the main applications of SeNPs and TeNPs (Figure 7).…”

Section: Bioapplications Of Senps and Tenpsmentioning

confidence: 99%

“…Tellurium is a metalloid present in nature as a soluble oxyanion under four oxidation states: −2 (H 2 Te), +2 (TeO 2 2− ), +4 (TeO 3 2− ), and +6 (TeO 4 2− ). It can be toxic in very low concentrations (1 µg mL −1 ) [59]. Recently, the conversion of tellurite to black elemental tellurium including extra/intracellular accumulation, volatilization, and methylation, has piqued the interest of researchers [60].…”

Section: Introductionmentioning

confidence: 99%

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Green Synthesis of Selenium and Tellurium Nanoparticles: Current Trends, Biological Properties and Biomedical Applications

Zambonino

Quizhpe

Jaramillo

et al. 2021

IJMS

108

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The synthesis and assembly of nanoparticles using green technology has been an excellent option in nanotechnology because they are easy to implement, cost-efficient, eco-friendly, risk-free, and amenable to scaling up. They also do not require sophisticated equipment nor well-trained professionals. Bionanotechnology involves various biological systems as suitable nanofactories, including biomolecules, bacteria, fungi, yeasts, and plants. Biologically inspired nanomaterial fabrication approaches have shown great potential to interconnect microbial or plant extract biotechnology and nanotechnology. The present article extensively reviews the eco-friendly production of metalloid nanoparticles, namely made of selenium (SeNPs) and tellurium (TeNPs), using various microorganisms, such as bacteria and fungi, and plants’ extracts. It also discusses the methodologies followed by materials scientists and highlights the impact of the experimental sets on the outcomes and shed light on the underlying mechanisms. Moreover, it features the unique properties displayed by these biogenic nanoparticles for a large range of emerging applications in medicine, agriculture, bioengineering, and bioremediation.

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Section: Bioapplications Of Senps and Tenpsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Selenium and Tellurium Nanoparticles: Current Trends, Biological Properties and Biomedical Applications

Zambonino

Quizhpe

Jaramillo

et al. 2021

IJMS

108

View full text Add to dashboard Cite

show abstract

“…The extracellular formation of tellurite complex precipitates triggered by the biological production of Fe 2+ from Fe 3+ under the anaerobic condition was suggested to be responsible for the exclusive formation of the extracellular products, through which these generated precipitates were reduced into Te nanorods by S. oneidensis MR-1 extracellular respiration [ 94 , 98 ]. Except for S. oneidensis MR-1, the strains of S. baltica GUSDZ9[ 96 ] and Shewanella sp. Taa[ 91 ] were also documented to produce Te nanorods and globular particles, respectively.…”

Section: Biosynthesis Of Metal Nanoparticlesmentioning

confidence: 99%

Bacterial extracellular electron transfer: a powerful route to the green biosynthesis of inorganic nanomaterials for multifunctional applications

et al. 2021

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Synthesis of inorganic nanomaterials such as metal nanoparticles (MNPs) using various biological entities as smart nanofactories has emerged as one of the foremost scientific endeavors in recent years. The biosynthesis process is environmentally friendly, cost-effective and easy to be scaled up, and can also bring neat features to products such as high dispersity and biocompatibility. However, the biomanufacturing of inorganic nanomaterials is still at the trial-and-error stage due to the lack of understanding for underlying mechanism. Dissimilatory metal reduction bacteria, especially Shewanella and Geobacter species, possess peculiar extracellular electron transfer (EET) features, through which the bacteria can pump electrons out of their cells to drive extracellular reduction reactions, and have thus exhibited distinct advantages in controllable and tailorable fabrication of inorganic nanomaterials including MNPs and graphene. Our aim is to present a critical review of recent state-of-the-art advances in inorganic biosynthesis methodologies based on bacterial EET using Shewanella and Geobacter species as typical strains. We begin with a brief introduction about bacterial EET mechanism, followed by reviewing key examples from literatures that exemplify the powerful activities of EET-enabled biosynthesis routes towards the production of a series of inorganic nanomaterials and place a special emphasis on rationally tailoring the structures and properties of products through the fine control of EET pathways. The application prospects of biogenic nanomaterials are then highlighted in multiple fields of (bio-) energy conversion, remediation of organic pollutants and toxic metals, and biomedicine. A summary and outlook are given with discussion on challenges of bio-manufacturing with well-defined controllability.

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“…Time course study for the biosynthesis of SeNPs was also carried out under optimized conditions. The SeNPs were obtained by the protocol described by Vaigankar et al (2018).…”

Section: Biosynthesis and Localization Of Senps By Halomonas Venusta mentioning

confidence: 99%

“…The anti-bio lm activity of biogenic SeNPs against potential human pathogens procured from Goa Medical College, Goa, India viz. Streptococcus pyogenes, Staphylococcus aureus, Klebsiella pneumoniae and Escherichia coli was studied using modi ed crystal violet assay in a 96 well sterile polystyrene microtiter plate as described previously (Vaigankar et al 2018). Percent antibio lm was calculated using the following formula:…”

Section: Applications Of Biogenic Senpsmentioning

confidence: 99%

Halomonas Venusta Mediated Detoxification and Biotransformation of Selenite Into Selenium Nanoparticles Exhibiting Various Biomedical Applications

Vaigankar¹,

Dubey²,

Mujawar³

et al. 2020

Preprint

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Marine environment is in constant threat due to anthropogenic activities which are involved in disturbing the aquatic flora and fauna due to accumulation of toxic metals and metalloids. The current study involves the use of microbial remediation strategy for reduction of toxic sodium selenite (Na2SeO3) into less toxic elemental Se (Se0) with concurrent synthesis of Se nanoparticles (SeNPs) possessing several biomedical potential. Selenite reducing bacterial strain isolated from Mandovi estuary of Goa, India was identified as Halomonas venusta based on 16S rRNA gene sequence analysis and designated as strain GUSDM4. It's maximum tolerance level for Na2SeO3 was 100 mM. The 2, 3-diaminonaphthalene based spectroscopic analysis clearly demonstrated 93% reduction of 4 mM Na2SeO3 to Se0 during late stationary growth phase of Halomonas venusta. Biosynthesis of SeNPs commenced within 4 h during log phase which was clearly evident from red colour in the growth medium and a characteristic peak at 265 nm revealed by UV-Vis spectrophotometry. The intracellular synthesis of SeNPs was confirmed by transmission electron microscopy (TEM) of these bacterial cells. Characterization of SeNPs by X-ray crystallography, TEM and energy dispersive X-ray analysis clearly demonstrated spherical SeNPs of 20-80 nm diameter with hexagonal crystal lattice. These SeNPs at 50 µg/mL exhibited 90% free radical scavenging activity and also demonstrated anti-biofilm activity at 20 µg/mL against common human pathogens which was evident by SEM analysis. These SeNPs interestingly revealed excellent dose-dependent and selective anti-proliferative activity against A549 cancer cell line and mosquito larvicidal activity against Aedes aegypti, Culex quinquefasciatus and Anopheles stephensi. Therefore, these studies have demonstrated amazing potential of marine bacterium, Halomonas venusta in bioremediation along with biosynthesis of SeNPs and their applications as free radical scavenger, anti-biofilm, chemo-therapeutic and larvicidal agents which is the first report of its kind.

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Tellurite biotransformation and detoxification by Shewanella baltica with simultaneous synthesis of tellurium nanorods exhibiting photo-catalytic and anti-biofilm activity

Cited by 45 publications

References 49 publications

Green Synthesis of Selenium and Tellurium Nanoparticles: Current Trends, Biological Properties and Biomedical Applications

Green Synthesis of Selenium and Tellurium Nanoparticles: Current Trends, Biological Properties and Biomedical Applications

Bacterial extracellular electron transfer: a powerful route to the green biosynthesis of inorganic nanomaterials for multifunctional applications

Halomonas Venusta Mediated Detoxification and Biotransformation of Selenite Into Selenium Nanoparticles Exhibiting Various Biomedical Applications

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