Biosynthesis, optimization and characterization of ZnO nanoparticles using Bacillus cereus MN181367 and their antimicrobial activity against multidrug resistant bacteria

Iqtedar, Mehwish; Riaz, Humayun; Kaleem, Afshan; Abdullah, R.; Aihetasham, Ayesha; Naz, Shagufta; Sharif, Saima

doi:10.24275/rmiq/bio1605

Cited by 11 publications

(7 citation statements)

References 51 publications

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“…The two peaks disappeared in the synthesised NPs and new peaks were observed that suggest the synthesis of ZnO and nickel doped ZnO NPs. The absorption peaks were observed in the wavelength range of 350–380 nm [ 33 ], and indicated the synthesis of ZnO and nickel doped ZnO nanoparticles. It is also strongly believed that the phytochemicals like phenols, phenolic, steroids and tannins are working as reducing agents and are responsible for conversion of metal salts into ZnO nanoparticles [ 17 , 34 ].…”

Section: Resultsmentioning

confidence: 99%

Biosynthesis, characterisation and antimicrobial activity of zinc oxide and nickel doped zinc oxide nanoparticles using Euphorbia abyssinica bark extract

Faye

Jebessa

Wubalem

2021

IET Nanobiotechnology

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Biosynthesis of metallic oxide nanoparticles is being used and preferred over physical and chemical methods of synthesis since it is simple, inexpensive, environmentally friendly, and green. The aim of this study was to synthesise ZnO and nickel doped ZnO nanoparticles using Euphorbia abyssinica bark extract for antimicrobial activity studies via agar disk diffusion method against some selected microbes. The synthesised nanoparticles were characterised using X-ray diffraction (XRD), ultraviolet-visible spectroscopy, and Fourier transform infrared spectroscopy. The study results revealed that the biosynthesised nanoparticles had good crystalline nature, with crystal sizes in the range of nanoparticles and structures of hexagonal wurtzite. Both undoped ZnO and nickel doped ZnO nanoparticles demonstrated antibacterial and antifungal activity against four bacterial strains and two fungal genus. Generally, nickel doped ZnO NPs were found to possess more antimicrobial activities than undoped ZnO NPs. Specially, 4% and 5% nickel doped ZnO NPs showed significantly enhanced activity against Enterococcus faecalis, Staphylococcus aureus, Aspergillus and Fusarium.

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Section: Resultsmentioning

confidence: 99%

Biosynthesis, characterisation and antimicrobial activity of zinc oxide and nickel doped zinc oxide nanoparticles using Euphorbia abyssinica bark extract

Faye

Jebessa

Wubalem

2021

IET Nanobiotechnology

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“…Several microbes have been used for ZnO-NP synthesis, but bacteria are most preferred due to their genetic manipulation capability and ease of handling over other eukaryotic microbes (Jayabalan et al, 2019;Iqtedar et al, 2020;Ahmed et al, 2021). The reproducible bacteria (like lactic acid producing bacteria) have gained more interest in bacterial-mediated NP synthesis because of their high production of diverse enzymes and non-pathogenic nature.…”

Section: Bacterial-mediated Zno-np Synthesismentioning

confidence: 99%

“…The release of Zn 2+ ions on the biomolecules (DNA/ proteins/ enzymes) found in bacterial cells is one of the major antibacterial mechanisms. It is well known that the formed ZnO-NPs disrupt numerous bacterial cell functions such as metabolism, active transport, and enzyme activity and subsequently induce bacterial cell death (Rauf et al, 2017;Taran et al, 2018;Iqtedar et al, 2020).…”

Section: Antibacterial Activitymentioning

confidence: 99%

Zinc oxide nanoparticles prepared through microbial mediated synthesis for therapeutic applications: a possible alternative for plants

Murali,

Gowtham,

Shilpa

et al. 2023

Front. Microbiol.

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Zinc oxide nanoparticles (ZnO-NPs) synthesized through biogenic methods have gained significant attention due to their unique properties and potential applications in various biological fields. Unlike chemical and physical approaches that may lead to environmental pollution, biogenic synthesis offers a greener alternative, minimizing hazardous environmental impacts. During biogenic synthesis, metabolites present in the biotic sources (like plants and microbes) serve as bio-reductants and bio-stabilizers. Among the biotic sources, microbes have emerged as a promising option for ZnO-NPs synthesis due to their numerous advantages, such as being environmentally friendly, non-toxic, biodegradable, and biocompatible. Various microbes like bacteria, actinomycetes, fungi, and yeast can be employed to synthesize ZnO-NPs. The synthesis can occur either intracellularly, within the microbial cells, or extracellularly, using proteins, enzymes, and other biomolecules secreted by the microbes. The main key advantage of biogenic synthesis is manipulating the reaction conditions to optimize the preferred shape and size of the ZnO-NPs. This control over the synthesis process allows tailoring the NPs for specific applications in various fields, including medicine, agriculture, environmental remediation, and more. Some potential applications include drug delivery systems, antibacterial agents, bioimaging, biosensors, and nano-fertilizers for improved crop growth. While the green synthesis of ZnO-NPs through microbes offers numerous benefits, it is essential to assess their toxicological effects, a critical aspect that requires thorough investigation to ensure their safe use in various applications. Overall, the presented review highlights the mechanism of biogenic synthesis of ZnO-NPs using microbes and their exploration of potential applications while emphasizing the importance of studying their toxicological effects to ensure a viable and environmentally friendly green strategy.

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“…Accordingly, existing antibiotic medications can be superseded with biomaterials including herbal medicine with high antimicrobial, antiviral, and antioxidant activity. 5,6 Mangifera Indica (Mango) is a popular tropical fruit in the world 7 and contains substances such as phenol constituents, triterpenes, flavonoids, phytosterols, and polyphenols. 2 The entire plant, including the leaves, fruit, roots, and flowers, has various therapeutic characteristics used for centuries to cure various illnesses.…”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, existing antibiotic medications can be superseded with biomaterials including herbal medicine with high antimicrobial, antiviral, and antioxidant activity. 5,6…”

Section: Introductionmentioning

confidence: 99%

Effect of Mangifera Indica (Mango) on Dental Caries: A Systematic Review

Salimi,

Tavahodi,

Taheri

et al. 2023

Nutr Metab Insights

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The present study aimed to evaluate the effect of Mangifera indica (mango) on dental caries. The entire plant, including the leaves, fruit, roots, and flowers, has various therapeutic characteristics used for centuries to cure various illnesses. This systematic review aimed to identify an inexpensive, simple, and effective method of preventing and controlling dental caries. The search was performed among the studies written in English, the database of abstracts concentrating on the effects of Mangifera indica (Mango) on dental caries detected in Pubmed, Scopus, Google Scholar, and Central. In total, we find 37 articles. The relevant English language articles published up to August 2022 were collected, screened, and reviewed. Search words contained “Mangifera indica” and “dental caries” or “Streptococcus mutans” or “tooth demineralization.” For our systematic review analysis, we included 3 randomized controlled trial studies studying a total of 130 people, of whom 110 were children aged 8 to 14 and 20 were adults aged 20 to 25. These experiments all employed mouthwash containing an extract from Mangifera indica. In conclusion, it has been proven in 2 separate studies that saliva’s PH will increase significantly. In addition, a reduction of S. mutants has been observed in another research. Overall, it was concluded that mango extract mouthwash is highly effective in decreasing the bacteria that can cause dental caries. however, we firmly believe that conduction of more detailed in vivo studies regarding Mangifera indica implications in dental caries treatment is essentially needed for further confirmation.

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Biosynthesis, optimization and characterization of ZnO nanoparticles using Bacillus cereus MN181367 and their antimicrobial activity against multidrug resistant bacteria

Abstract: totales del petróleo intemperizados en suelos y sedimentos (Biodegradation modeling of sludge bioreactors of total petroleum hydrocarbons weathering in soil and sediments)

Cited by 11 publications

References 51 publications

Biosynthesis, characterisation and antimicrobial activity of zinc oxide and nickel doped zinc oxide nanoparticles using Euphorbia abyssinica bark extract

Biosynthesis, characterisation and antimicrobial activity of zinc oxide and nickel doped zinc oxide nanoparticles using Euphorbia abyssinica bark extract

Zinc oxide nanoparticles prepared through microbial mediated synthesis for therapeutic applications: a possible alternative for plants

Effect of Mangifera Indica (Mango) on Dental Caries: A Systematic Review

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