Biosynthesis, characterization and antimicrobial activities of zinc oxide nanoparticles from leaf extract of Glycosmis pentaphylla (Retz.) DC

Vijayakumar, S.; Krishnakumar, C.; Arulmozhi, P.; Mahadevan, S.; Parameswari, N.

doi:10.1016/j.micpath.2018.01.003

Cited by 113 publications

(32 citation statements)

References 17 publications

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“…79-0206. Similar planes were reported for ZnO-NPs by other authors [88][89][90]. Besides, these nanoparticles showed a small but noticeable peak at 46°, indicating the presence of interstitial zinc in the ZnO lattices [91].…”

Section: X-ray Diffraction Analysissupporting

confidence: 88%

Pectin-Based Films with Cocoa Bean Shell Waste Extract and ZnO/Zn-NPs with Enhanced Oxygen Barrier, Ultraviolet Screen and Photocatalytic Properties

Mellinas

Jiménez

Garrigós

2020

Foods

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In this work, pectin-based active films with a cocoa bean shell extract, obtained after waste valorisation of residues coming from the chocolate production process, and zinc oxide/zinc nanoparticles (ZnO/Zn-NPs) at different concentrations, were obtained by casting. The effect of the active additive incorporation on the thermal, barrier, structural, morphological and optical properties was investigated. Moreover, the photocatalytic properties of the obtained films based on the decomposition of methylene blue (MB) in aqueous solution at room temperature were also studied. A significant increase in thermal and oxidative stability was obtained with the incorporation of 3 wt% of ZnO/Zn-NPs compared to the control film. The addition of 5 wt% cocoa bean shell extract to pectin significantly affected the oxygen barrier properties due to a plasticizing effect. In contrast, the addition of ZnO/Zn-NPs at 1 wt% to pectin caused a decrease in oxygen transmission rate per film thickness (OTR.e) values of approximately 50% compared to the control film, resulting in an enhanced protection against oxidation for food preservation. The optical properties were highly influenced by the incorporation of the natural extract but this effect was mitigated when nanoparticles were also incorporated into pectin-based films. The addition of the extract and nanoparticles resulted in a clear improvement (by 98%) in UV barrier properties, which could be important for packaged food sensitive to UV radiation. Finally, the photocatalytic activity of the developed films containing nanoparticles was demonstrated, showing photodegradation efficiency values of nearly 90% after 60 min at 3 wt% of ZnO/Zn-NPs loading. In conclusion, the obtained pectin-based bionanocomposites with cocoa bean shell waste extract and zinc oxide/zinc nanoparticles showed great potential to be used as active packaging for food preservation.

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Section: X-ray Diffraction Analysissupporting

confidence: 88%

Pectin-Based Films with Cocoa Bean Shell Waste Extract and ZnO/Zn-NPs with Enhanced Oxygen Barrier, Ultraviolet Screen and Photocatalytic Properties

Mellinas

Jiménez

Garrigós

2020

Foods

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“…Zinc oxide (ZnO) is a multifunctional and biocompatible semiconductor material used in the preparation of many products including plastics, paints, ceramics, batteries and as an antibacterial [152]. In the pharmaceutical field it is recognized as one of the safest materials by the Food and Drug Administration (FDA) [50]. Nanosized ZnO presents great interest in the industrial sector because of its intrinsic properties as wide bandgap (3.37 eV), high-exciton binging energy (60 MeV), high electronic conductivity, nontoxicity and chemical stability [153].…”

Section: Zinc Oxide Nanoparticles (Znonps)mentioning

confidence: 99%

“…ZnONPs possess antimicrobial activity against Gram-positive (S. aureus, S. epidermis, B. subtilis, B. cereus, L. monocytogenes, E. faecium) and Gram-negative (P. aeruginosa, E. coli, K. pneumoniae, Salmonella sp.) bacteria [50].…”

Section: Antibacterial 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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“…Through investigating the antibacterial activity of ZnONPs in vitro studies, it is well known that ZnONPs have antimicrobial activity against Gram-positive (B. cereus, B. subtilis, E. faecium, L. monocytogenes, S. aureus and S. epidermis) and Gram-negative (E. coli, K. pneumoniae, P. aeruginosa and Salmonella sp.) bacteria [109]. Furthermore, Seil and colleagues have shown that intrinsic antibacterial activity against S. aureus of ZnONPs might be enhanced, up to 76%, by US exposure as this provides an additional mechanism to decrease bacterial activity via enhanced generation of hydrogen peroxide by S. aureus compared to control samples [110].…”

Section: Zinc Oxide Npsmentioning

confidence: 99%

Biomedical Applications of Reactive Oxygen Species Generation by Metal Nanoparticles

et al. 2020

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The design, synthesis and characterization of new nanomaterials represents one of the most dynamic and transversal aspects of nanotechnology applications in the biomedical field. New synthetic and engineering improvements allow the design of a wide range of biocompatible nanostructured materials (NSMs) and nanoparticles (NPs) which, with or without additional chemical and/or biomolecular surface modifications, are more frequently employed in applications for successful diagnostic, drug delivery and therapeutic procedures. Metal-based nanoparticles (MNPs) including metal NPs, metal oxide NPs, quantum dots (QDs) and magnetic NPs, thanks to their physical and chemical properties have gained much traction for their functional use in biomedicine. In this review it is highlighted how the generation of reactive oxygen species (ROS), which in many respects could be considered a negative aspect of the interaction of MNPs with biological matter, may be a surprising nanotechnology weapon. From the exchange of knowledge between branches such as materials science, nanotechnology, engineering, biochemistry and medicine, researchers and clinicians are setting and standardizing treatments by tuning ROS production to induce cancer or microbial cell death.

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Biosynthesis, characterization and antimicrobial activities of zinc oxide nanoparticles from leaf extract of Glycosmis pentaphylla (Retz.) DC

Cited by 113 publications

References 17 publications

Pectin-Based Films with Cocoa Bean Shell Waste Extract and ZnO/Zn-NPs with Enhanced Oxygen Barrier, Ultraviolet Screen and Photocatalytic Properties

Pectin-Based Films with Cocoa Bean Shell Waste Extract and ZnO/Zn-NPs with Enhanced Oxygen Barrier, Ultraviolet Screen and Photocatalytic Properties

Metal-Based Nanoparticles as Antimicrobial Agents: An Overview

Biomedical Applications of Reactive Oxygen Species Generation by Metal Nanoparticles

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