Novel mycosynthesis of cobalt oxide nanoparticles using
            <i>Aspergillus brasiliensis</i>
            ATCC 16404—optimization, characterization and antimicrobial activity

Omran, Basma A.; Nassar, Hussein N.; Younis, Sherif A.; El‐Salamony, Radwa A.; Fatthallah, Nesreen A.; Hamdy, A.; El-Shatoury, Einas H.

doi:10.1111/jam.14498

Cited by 54 publications

(26 citation statements)

References 48 publications

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“…Furthermore, a greater tendency of the Co NPs to agglomerate might reduce its antibacterial action against the gram-positive Staphylococcus aureus [ 33 ]. However, for the cases of Co oxide and other oxide NPs, evidence of the opposite trend was also noticed [ 24 – 27 ]. The higher effectiveness of the Co oxide NPs against gram-positive bacteria could be related to an enhanced cell wall permeability resulting from the interactions with the nanoparticles [ 12 ].…”

Section: Discussionmentioning

confidence: 99%

“…An agar well diffusion method was used to assess the antibacterial activities of Co NPs against the isolates of Escherichia coli , Staphylococcus aureus , and Proteus spp . [ 19 – 24 ]. All bacteria were suspended in sterile water and diluted to 1×10 8 CFU/ml.…”

Section: Methodsmentioning

confidence: 99%

“…All measurements were executed three times to obtain an average result. Activity Index (AI) and Fold Increase were calculated based on the inhibition zone diameters using Equation 2 and Equation 3 to compare the performance of Co nanoparticles compared to standard antibiotics [ 19 – 24 ].…”

Section: Methodsmentioning

confidence: 99%

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Evaluating the antibacterial effect of cobalt nanoparticles against multi-drug resistant pathogens

et al. 2021

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This study aimed to estimate the effect of cobalt nanoparticles (Co NPs) with different concentrations against multidrug-resistant (MDR) pathogenic bacteria. Three isolates of (gram-positive), . (gram-negative), and (gram-negative) bacteria were extracted from various clinical examples utilizing routine methods on bacteriological culture media. The antibacterial sensitivity of commercial antibiotics such as Ciprofloxacin, Cefotaxime, Gentamycin, and Amoxicillin was broken down on a Muller Hinton agar plate and evaluated using the disk diffusion method. The study results demonstrated the antibacterial effect of the Co NPs against the bacterial isolates with three different concentrations utilized in the study. The results indicated that the Co NPs showed the highest antibacterial activity when utilizing 100 μg/ml against followed by and with zones of inhibition measured as 22.2±0.1 mm, 20.3±0.15 mm, and 15.8±0.1 mm; respectively. Co NPs at a 100 μg/mL concentration showed higher inhibition zones than several common antibiotics except for Ciprofloxacin, which demonstrated better antibacterial activity against the bacterial isolates employed in this study. Scanning Electron Microscope (SEM)and X-Ray diffraction (XRD)studies confirmed that Cobalt nanoparticles (Co NPs) were synthesized from cobalt sulphate solution with a size ranging from 40 nm to 60 nm. The nanoparticles showed a crystalline structure with a round shape and smooth surface. The antibacterial resistance of Co NPs against three common bacteria such as , , and was assessed in this study. The optimum concentration of the Co NPs was identified as 100 μg/ml, which could provide a similar or higher antibacterial effect.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Evaluating the antibacterial effect of cobalt nanoparticles against multi-drug resistant pathogens

et al. 2021

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“…Furthermore, Co 3 O 4 NPs among the five types of mycosynthesized NPs exhibited the strongest antimicrobial potential against the tested pathogens. There Industrial Applications of Nanomaterials Produced from Aspergillus Species DOI: http://dx.doi.org/10.5772/intechopen.98780 are very few reports on the antimicrobial activity of Co 3 O 4 NPs and only very less reported their antibacterial potential only [121]. Meanwhile, previous reports have observed the antimicrobial activity of CuO, Fe 3 O 4 , NiO, and ZnO NPs [122][123][124][125].…”

Section: Applications In Healthcare Medicine and Pharmacymentioning

confidence: 99%

Industrial Applications of Nanomaterials Produced from Aspergillus Species

Rai¹,

Gupta²,

Bonde³

et al. 2022

The Genus Aspergillus - Pathogenicity, Mycotoxin Production and Industrial Applications

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There is a great demand for green methods of synthesis of nanoparticles. Fungi play an important role in the synthesis of nanoparticles, of which Aspergillus spp. are known to secrete different enzymes responsible for the synthesis of nanoparticles. The process of biosynthesis of nanoparticles is simple, rapid, cost-effective, eco-friendly, and easy to synthesize at ambient temperature and pressure. Mostly, the metal nanoparticles such as silver, gold, lead and the oxides of titanium, zinc, and copper are synthesized from Aspergillus spp. These include mainly Aspergillus fumigatus, A. flavus, A. niger, A. terreus, and A. clavatus. The fabrication of different nanoparticles is extracellular. In the present chapter, we have discussed the role of different species of Aspergillus, mechanism of biogenic synthesis particularly enzymes involved in the reduction of metal ions into nanoparticles. The biogenically synthesized nanoparticles have demonstrated several biomedicals, agricultural, and engineering applications. The biogenic nanoparticles are mostly used as antimicrobial and cytotoxic agents. Their use as fungicidal agents is important for sustainable agriculture.

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“…VijayaNandan et al mixed the fungal biomass with the cobalt acetylacetonate solution and stirred it under certain conditions to extract the nanoparticles in the supernatant [41]. The sterile silk filtrate of Aspergillus brasiliensis ATCC 16404 can also be used to synthesize cobalt oxide nanoparticles with a nanometer size range of 20 to 27 nm [42]. Because raw materials are easy to obtain and separate, this method has unique advantages for preparing cobalt oxide nanoparticles.…”

Section: Green Biosynthesismentioning

confidence: 99%

Inspirations of Cobalt Oxide Nanoparticle Based Anticancer Therapeutics

et al. 2021

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Cobalt is essential to the metabolism of all animals due to its key role in cobalamin, also known as vitamin B12, the primary biological reservoir of cobalt as an ultra-trace element. Current cancer treatment strategies, including chemotherapy and radiotherapy, have been seriously restricted by their side effects and low efficiency for a long time, which urges us to develop new technologies for more effective and much safer anticancer therapies. Novel nanotechnologies, based on different kinds of functional nanomaterials, have been proved to act as effective and promising strategies for anticancer treatment. Based on the important biological roles of cobalt, cobalt oxide nanoparticles (NPs) have been widely developed for their attractive biomedical applications, especially their potential for anticancer treatments due to their selective inhibition of cancer cells. Thus, more and more attention has been attracted to the preparation, characterization and anticancer investigation of cobalt oxide nanoparticles in recent years, which is expected to introduce novel anticancer treatment strategies. In this review, we summarize the synthesis methods of cobalt oxide nanoparticles to discuss the advantages and restrictions for their preparation. Moreover, we emphatically discuss the anticancer functions of cobalt oxide nanoparticles as well as their underlying mechanisms to promote the development of cobalt oxide nanoparticles for anticancer treatments, which might finally benefit the current anticancer therapeutics based on functional cobalt oxide nanoparticles.

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Novel mycosynthesis of cobalt oxide nanoparticles using Aspergillus brasiliensis ATCC 16404—optimization, characterization and antimicrobial activity

Cited by 54 publications

References 48 publications

Evaluating the antibacterial effect of cobalt nanoparticles against multi-drug resistant pathogens

Evaluating the antibacterial effect of cobalt nanoparticles against multi-drug resistant pathogens

Industrial Applications of Nanomaterials Produced from Aspergillus Species

Inspirations of Cobalt Oxide Nanoparticle Based Anticancer Therapeutics

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