Microbial processing of tellurium as a tool in biotechnology

Turner, Raymond J.; Borghese, Roberto; Zannoni, Davide

doi:10.1016/j.biotechadv.2011.08.018

Cited by 117 publications

(117 citation statements)

References 130 publications

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“…Due to the extensive uses of selenium and tellurium in electronics, semi-conductors and solar cells, their scarcity and uneven distribution, it necessitates the recovery methods of these metals from waste materials/solutions [94,95]. The microorganism Pseudomonas mendocina can reduce tellurium from its higher oxidation states (+2, +4 and +6) to Te 0 [96,97].…”

Section: Bio-reclamation Of Other Critical Metalsmentioning

confidence: 99%

Bio-Reclamation of Strategic and Energy Critical Metals from Secondary Resources

Ilyas

Kim

Lee

et al. 2017

Metals

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Abstract:Metals with an average crustal abundance of <0.01 ppm, which are high in supply shortage due to soaring demand, can, under the excessive environmental risk and <1% recycling rate of their production, be termed as 'critical' in a limited geo-boundary. A global trend to the green energy and low carbon technologies with geopolitical scenario is challenging for the sustainable reclamation of these metals from secondary resources. Among the available processes, bio-reclamation can be a sustainable technique for extracting and concentrating these metals. Therefore, in the present paper, the potential reclamation of critical metals (including rare earth elements, precious metals, and a common nuclear fuel element, uranium) via their interaction with microbe/s has been reviewed.

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Section: Bio-reclamation Of Other Critical Metalsmentioning

confidence: 99%

Bio-Reclamation of Strategic and Energy Critical Metals from Secondary Resources

Ilyas

Kim

Lee

et al. 2017

Metals

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“…Unlike selenium; its relative, the biological and the medical properties of the tellurium and its compounds have rarely been evaluated (2). Among the diff erent oxidation states of the Te, only elemental tellurium (i.e.,Te ) (3,4). Although the potential toxicity of Te 0 has not been fully understood, the bactericidal activity of the Te oxyanions has been recognized since the discovery of antibiotics.…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial and Antioxidant Activity of the Biologically Synthesized Tellurium Nanorods; A Preliminary In vitro Study

Shakibaie

Adeli-Sardou

Mohammadi-Khorsand

et al. 2017

Iran. J. Biotechnol.

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Background: Recent theranostic (therapeutic or diagnostic) applications of tellurium nanoparticles have attracted a great interest for development of diff erent methods for synthesis of this valuable nanostructure, especially via biological resources. Objectives: In the present study, the antimicrobial and antioxidant eff ects of the tellurium nanorods (Te NRs) biosynthesized by a bacterial strain Pseudomonas pseudoalcaligenes strain Te were evaluated. Materials and Methods:The antimicrobial eff ect of Te NRs and potassium tellurite against diff erent bacterial and fungal pathogens was assessed by microdilution method. Furthermore, the disk diff usion method was used to evaluate the antibacterial eff ect of the biogenic Te NRs and potassium tellurite against methicillin-resistant Staphylococcus aureus, alone or in combination with various antibiotics. Also, the biogenic Te NRs were investigated for antioxidant activity using 2, 2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity and reducing power assay. Results: Transmission electron micrograph (TEM) of the purifi ed Te NRs showed individual and rod-shaped nanostructure (~22 nm diameter by 185 nm in length). Based on the data obtained from both microdilution and disk diff usion method the K 2 TeO 3 exhibited a higher antibacterial and antifungal activity compared to the Te NRs. The measured IC 50 for the biogenic Te NRs (i.e. DPPH radical scavenging activity) was found to be 24.9 μg.mL -1 , while, K 2 TeO 3 has represented only 17.6 ± 0.8 % DPPH radical scavenging eff ect at the concentration of 160 μg.mL -1 . The reducing power assay revealed a higher electron-donating activity for Te NRs compared to K 2 TeO 3 . Conclusions: Based on the data obtained from both microdilution and disk diff usion method the K 2 TeO 3 exhibited a higher antimicrobial and antifungal activity than Te NRs. Te NRs didn't show the antibacterial eff ect against the tested bacterial strain: MRSA and showed an inhibitory eff ect and antibacterial activity of the eff ective antibiotics. However, more studies should be performed to explore the action mechanism of the produced biogenic Te NRs.

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“…Tellurium can exist in a number of redox states, namely telluride [Te(-II)], elemental tellurium [Te(0)], tellurite [Te(IV)], and tellurate [Te(VI)]. Metallic tellurium has found everincreasing applications in electronics, optics, sensors, and solar panels [1], and its widespread use poses concerns about its potential negative effects on the environment and human health. Prokaryotes and eukaryotes interact with tellurium, mainly when it is present in the forms of organometalloids and oxyanions; in this respect, tellurite TeO 3 2-, is one of the compounds most toxic to living cells [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

On the role of a specific insert in acetate permeases (ActP) for tellurite uptake in bacteria: Functional and structural studies

Borghese

Canducci

Musiani

et al. 2016

Journal of Inorganic Biochemistry

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Microbial processing of tellurium as a tool in biotechnology

Cited by 117 publications

References 130 publications

Bio-Reclamation of Strategic and Energy Critical Metals from Secondary Resources

Bio-Reclamation of Strategic and Energy Critical Metals from Secondary Resources

Antimicrobial and Antioxidant Activity of the Biologically Synthesized Tellurium Nanorods; A Preliminary In vitro Study

On the role of a specific insert in acetate permeases (ActP) for tellurite uptake in bacteria: Functional and structural studies

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