Biosynthesis, characterization and antibacterial activity of copper oxide nanoparticles (CuO NPs) from actinomycetes

Nabila, Mohammed Ishaque; Каннабиран, Кришнан

doi:10.1016/j.bcab.2018.05.011

Cited by 205 publications

(86 citation statements)

References 30 publications

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“…Both CuNPs and copper oxide nanoparticles possess antibacterial and biocidal properties. [ 249,250 ] They have great potential for biomedical applications because of their cost‐effectiveness and relatively low toxicity to human cells. [ 251,252 ] Biosynthesized CuNPs possess more potent antimicrobial activities than nanoparticles synthesized using chemical routes.…”

Section: Microbes As Tiny Cell Factories For Biosynthesis Of Inorganimentioning

confidence: 99%

Microbe‐Mediated Extracellular and Intracellular Mineralization: Environmental, Industrial, and Biotechnological Applications

et al. 2020

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Bacteria play an important role in the calcification process of natural minerals and within organisms ( Table 1). It is Microbe-mediated mineralization is ubiquitous in nature, involving bacteria, fungi, viruses, and algae. These mineralization processes comprise calcification, silicification, and iron mineralization. The mechanisms for mineral formation include extracellular and intracellular biomineralization. The mineral precipitating capability of microbes is often harnessed for green synthesis of metal nanoparticles, which are relatively less toxic compared with those synthesized through physical or chemical methods. Microbe-mediated mineralization has important applications ranging from pollutant removal and nonreactive carriers, to other industrial and biomedical applications. Herein, the different types of microbe-mediated biomineralization that occur in nature, their mechanisms, as well as their applications are elucidated to create a backdrop for future research.

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Section: Microbes As Tiny Cell Factories For Biosynthesis Of Inorganimentioning

confidence: 99%

Microbe‐Mediated Extracellular and Intracellular Mineralization: Environmental, Industrial, and Biotechnological Applications

et al. 2020

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“…The O. sanctum leaves-extracted eugenol mediated synthesized flower-shaped CuO-NSs that played like a potential inhibitor at 100 µL concentration for all examined bacterial organisms, which is exposed from Moreover, plant extract also shows noteworthy results (zone of inhibition) in contrast to the tested pathogenic organisms due to the existence of antibacterial efficiency in O. sanctum leaves extract [70,71]. Also, due to the size of the as-synthesized flower-shaped CuO-NSs, strong electrostatic interaction between bacterial organisms could have been developed which oxidized the bacterial cell wall to destruct leading to immediate death [72][73][74]. The as-synthesized CuO-NFs show strong barrier against E. coli (29 ± 2 mm) at the concentration of 100 µg mL −1 , while at concentration of 25 µg mL −1 weak barrier was found in all examined bacterial organisms.…”

Section: Photocatalytic and Antibacterial Activitiesmentioning

confidence: 93%

Biosynthesis of Flower-Shaped CuO Nanostructures and Their Photocatalytic and Antibacterial Activities

Siddiqui¹,

2020

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HIGHLIGHTS• Eugenol (4-allyl-2-methoxyphenol) extracted from O. sanctum leaves is used as a natural reducing agent for the synthesis of CuO nanoflowers (NFs).• CuO-NFs can degrade methylene blue with an efficiency of 90%. • CuO-NFs offer a new vision to deactivate multi-drug microorganisms. A B S T R AC T C o pper oxide nanoflowers (CuO-NFs) have been synthesized through a novel green route using Tulsi leaves-extracted eugenol (4-allyl-2-methoxyphenol) as reducing agent. Characterizations results reveal the growth of crystalline singlephase CuO-NFs with monoclinic structure. The prepared CuO-NFs can effectively degrade methylene blue with 90% efficiency. They also show strong barrier against E. coli (27 ± 2 mm) at the concentration of 100 µg mL −1 , while at the concentration of 25 µg mL −1 weak barrier has been found against all examined bacterial organisms. The results provide important evidence that CuO-NFs have sustainable performance in methylene blue degradation as well as bacterial organisms.

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“…Moniri et al synthesized ultra-small CuONPs obtaining a minimum inhibitory concentration (MIC) (derived from both precursors) against E. coli and S. aureus of 3.75 and 2.50 mg/mL, respectively [132]. Ishaque and Kannabiran biosynthesized CuONPs which showed inhibited the bacterial pathogens B. cereus, P. mirabilis and A. caviae even at 5 µg/mL concentration [133].…”

Section: Pharmaceutical Propertiesmentioning

confidence: 99%

Metal-Based Nanoparticles as Antimicrobial Agents: An Overview

et al. 2020

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Metal-based nanoparticles have been extensively investigated for a set of biomedical applications. According to the World Health Organization, in addition to their reduced size and selectivity for bacteria, metal-based nanoparticles have also proved to be effective against pathogens listed as a priority. Metal-based nanoparticles are known to have non-specific bacterial toxicity mechanisms (they do not bind to a specific receptor in the bacterial cell) which not only makes the development of resistance by bacteria difficult, but also broadens the spectrum of antibacterial activity. As a result, a large majority of metal-based nanoparticles efficacy studies performed so far have shown promising results in both Gram-positive and Gram-negative bacteria. The aim of this review has been a comprehensive discussion of the state of the art on the use of the most relevant types of metal nanoparticles employed as antimicrobial agents. A special emphasis to silver nanoparticles is given, while others (e.g., gold, zinc oxide, copper, and copper oxide nanoparticles) commonly used in antibiotherapy are also reviewed. The novelty of this review relies on the comparative discussion of the different types of metal nanoparticles, their production methods, physicochemical characterization, and pharmacokinetics together with the toxicological risk encountered with the use of different types of nanoparticles as antimicrobial agents. Their added-value in the development of alternative, more effective antibiotics against multi-resistant Gram-negative bacteria has been highlighted.

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Biosynthesis, characterization and antibacterial activity of copper oxide nanoparticles (CuO NPs) from actinomycetes

Cited by 205 publications

References 30 publications

Microbe‐Mediated Extracellular and Intracellular Mineralization: Environmental, Industrial, and Biotechnological Applications

Microbe‐Mediated Extracellular and Intracellular Mineralization: Environmental, Industrial, and Biotechnological Applications

Biosynthesis of Flower-Shaped CuO Nanostructures and Their Photocatalytic and Antibacterial Activities

Metal-Based Nanoparticles as Antimicrobial Agents: An Overview

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