Green synthesis of selenium nanospheres and nanoneedles by halophilic archaea

Nagar, Devika; Ghosh, Narendra Nath; Bragança, Judith M.

doi:10.1007/s13204-022-02665-6

Cited by 5 publications

(5 citation statements)

References 35 publications

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“…FTIR of cell lysate‐nanomaterial suggested the hypothesized role of haloarchaeal proteins, like redox enzymes or reductases that may be involved in the synthesis of nanoparticles as previously reported [32–36, 48]. We thus concluded that these functional groups associated with nanomaterial were from the biomolecules present in the cell lysate and which also play the role of capping agents and help in preventing steric aggregation.…”

Section: Discussionsupporting

confidence: 77%

Characterization of Mn₃O₄‐MnO₂ nanocomposites biosynthesized by cell lysate of Haloferax alexandrinus GUSF‐1

Alvares

Gaonkar

Naik³

et al. 2023

J Basic Microbiol

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Manganese oxide nanocomposites attract huge attention in various biotechnological fields due to their extensive catalytic properties. This study reports an easy, rapid, and cost‐effective method of using the cell lysate of haloarchaeon, Haloferax alexandrinus GUSF‐1 for the synthesis of manganese oxide nanoparticles. The reaction between the cell lysate and manganese sulfate resulted in the formation of a dark brown precipitate within 48 h at room temperature. The X‐ray diffraction pattern showed the existence of Mn3O4 and MnO2 phases consistent with the JCPDS card no. (01‐075‐1560 and 00‐050‐0866). The dark brown colloidal suspension of MnO3‐MnO2 in methanol showed maximum absorption between 220 and 260 nm. The EDX spectrum confirmed the presence of manganese and oxygen. The Transmission electron microscopy revealed the spherical morphology with an average particle size between 30 and 60 nm. The magnetic moment versus magnetic field (MH) curve, at room temperature (300 K) did not saturate even at a high magnetic field (±3T) indicating the paramagnetic nature of the prepared nanocomposite. The Atomic Emission Spectroscopic analysis showed a negligible amount of soluble manganese (0.03 ppm in 50 ppm) in the Mn3O4‐MnO2 suspension suggesting the maximum stability of the material in the solvent over time. Interstingly, Mn3O4‐MnO2 nanocomposites evidenced antimicrobial activity in the order of Pseudomonas aeruginosa > Salmonella typhi > Escherichia coli > Proteus vulgaris > Candida albicans > Staphylococcus aureus. Conclusively, this is the first report on the formation of Mn3O4‐MnO2 nanocomposites using cell lysate of salt pan haloarcheon Haloferax alexandrinus GUSF‐1 with antimicrobial potential.

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Section: Discussionsupporting

confidence: 77%

Characterization of Mn₃O₄‐MnO₂ nanocomposites biosynthesized by cell lysate of Haloferax alexandrinus GUSF‐1

Alvares

Gaonkar

Naik³

et al. 2023

J Basic Microbiol

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“…with few modifications. Briefly, 10 mg of selenium nanoparticles previously biosynthesized, as described in Nagar et al [34] . were dispersed in deionized water and sonicated.…”

Section: Methodsmentioning

confidence: 99%

“…Silver selenium nanoparticles (AgSeNPs) were synthesized as per Ahmad et al [33] with few modifications. Briefly, 10 mg of selenium nanoparticles previously biosynthesized, as described in Nagar et al [34] were dispersed in deionized water and sonicated. To the selenium nanoparticle suspension 50 mg of silver nitrate solution in deionized water was added and the colloidal solution was allowed to mix under magnetic stirring at 35 °C for 45 min at pH 8.…”

Section: Synthesis Of Agse and Cur-agse Nanocompositesmentioning

confidence: 99%

Synthesis and Characterization of Bacterial Cellulose‐Curcumin‐Ag‐Se Nanocomposites having Antioxidant and Antibacterial properties for Skin Healing Applications

Dias,

Nagar,

Bhende

et al. 2024

ChemistrySelect

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Bacterial Cellulose is a polymer synthesised by some strains of bacteria thus perceived as environmentally friendly. Bacterial Cellulose (BC) was subjected to three different drying procedures; Freeze Drying, Blot drying and Oven drying. Studies on its water holding capacity, thermogravimetric analysis and mechanical strength revealed that Freeze drying was the best method for retaining its pore size and water holding capacity. Silver selenium nanoparticles complexed with Curcumin (Cur‐AgSeNPs) were loaded on BC and characterised by FESEM, EDX, FTIR and XRD. The ultrastructure of the BC nanocomposite revealed a three‐dimensional network of interwoven cellulose microfibrils with the nanoparticle complex adsorbed onto the surface as well as embedded within the porous structure of the membrane. Antimicrobial analysis of the BCnanocomposite showed bactericidal activity against P. aeruginosa (MTCC 741), E. coli (MTCC 2574) and S. aureus (MTCC 737) cultures. 0.5 mM Cur‐AgSeNPs loaded BC film showed a Radical Scavenging Activity of 63.92±0.76 % by ABTS assay and a cell viability of 75 % after 4 days for L929 fibroblast cells. Haemocompatibility test of the films showed <10 % haemolysis of RBCs indicating their haemocompatible nature. These results suggest that the BCnanocomposite film would open up the possibility for use as an ideal skin healing material.

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“…Abdollahnia et al (2020) studied the synthesis of silver and selenium nanoparticles by haloarchaea isolated from solar salterns. Intracellular production of silver and selenium NPs were reported by Haloferax sp., and Halogeometricum sp., respectively (Abdollahnia et al, 2020;Nagar et al, 2022). The biosynthesized nanoparticles exhibited antibacterial activity against S. aureus, E. coli, B. subtilis, and P. aeruginosa (Abdollahnia et al, 2020).…”

Section: Synthesis and Application Of Bioactive Nanoparticles From Ha...mentioning

confidence: 99%

“…Interestingly, all of the isolates produced carotenoids (Verma et al, 2020). Haloarchaea has an inherent molecule known as bacterioruberin, which is found in most haloarchaea (Nagar et al, 2022). Similarly, novel species under the genus Halorubrum, isolated from South Korea, produced C 50 carotenoid (bacterioruberin), having a strong antioxidant activity (Hwang et al, 2022).…”

Section: Biotechnological Significance Of Haloarchaeamentioning

confidence: 99%

Bioactive molecules from haloarchaea: Scope and prospects for industrial and therapeutic applications

et al. 2023

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Marine environments and salty inland ecosystems encompass various environmental conditions, such as extremes of temperature, salinity, pH, pressure, altitude, dry conditions, and nutrient scarcity. The extremely halophilic archaea (also called haloarchaea) are a group of microorganisms requiring high salt concentrations (2–6 M NaCl) for optimal growth. Haloarchaea have different metabolic adaptations to withstand these extreme conditions. Among the adaptations, several vesicles, granules, primary and secondary metabolites are produced that are highly significant in biotechnology, such as carotenoids, halocins, enzymes, and granules of polyhydroxyalkanoates (PHAs). Among halophilic enzymes, reductases play a significant role in the textile industry and the degradation of hydrocarbon compounds. Enzymes like dehydrogenases, glycosyl hydrolases, lipases, esterases, and proteases can also be used in several industrial procedures. More recently, several studies stated that carotenoids, gas vacuoles, and liposomes produced by haloarchaea have specific applications in medicine and pharmacy. Additionally, the production of biodegradable and biocompatible polymers by haloarchaea to store carbon makes them potent candidates to be used as cell factories in the industrial production of bioplastics. Furthermore, some haloarchaeal species can synthesize nanoparticles during heavy metal detoxification, thus shedding light on a new approach to producing nanoparticles on a large scale. Recent studies also highlight that exopolysaccharides from haloarchaea can bind the SARS-CoV-2 spike protein. This review explores the potential of haloarchaea in the industry and biotechnology as cellular factories to upscale the production of diverse bioactive compounds.

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Green synthesis of selenium nanospheres and nanoneedles by halophilic archaea

Cited by 5 publications

References 35 publications

Characterization of Mn₃O₄‐MnO₂ nanocomposites biosynthesized by cell lysate of Haloferax alexandrinus GUSF‐1

Characterization of Mn₃O₄‐MnO₂ nanocomposites biosynthesized by cell lysate of Haloferax alexandrinus GUSF‐1

Synthesis and Characterization of Bacterial Cellulose‐Curcumin‐Ag‐Se Nanocomposites having Antioxidant and Antibacterial properties for Skin Healing Applications

Bioactive molecules from haloarchaea: Scope and prospects for industrial and therapeutic applications

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Green synthesis of selenium nanospheres and nanoneedles by halophilic archaea

Cited by 5 publications

References 35 publications

Characterization of Mn3O4‐MnO2 nanocomposites biosynthesized by cell lysate of Haloferax alexandrinus GUSF‐1

Characterization of Mn3O4‐MnO2 nanocomposites biosynthesized by cell lysate of Haloferax alexandrinus GUSF‐1

Synthesis and Characterization of Bacterial Cellulose‐Curcumin‐Ag‐Se Nanocomposites having Antioxidant and Antibacterial properties for Skin Healing Applications

Bioactive molecules from haloarchaea: Scope and prospects for industrial and therapeutic applications

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Characterization of Mn₃O₄‐MnO₂ nanocomposites biosynthesized by cell lysate of Haloferax alexandrinus GUSF‐1

Characterization of Mn₃O₄‐MnO₂ nanocomposites biosynthesized by cell lysate of Haloferax alexandrinus GUSF‐1