Green synthesis of ZnO nanoparticles using polyphenol extracts from pepper waste (Capsicum annuum)

Jiménez‐Rosado, Mercedes; Gómez-Zavaglia, Andrea; Guerrero, Antonio; Romero, Alberto

doi:10.1016/j.jclepro.2022.131541

Cited by 50 publications

(11 citation statements)

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“…It is well reported that nanoparticles have distinct optical absorption spectra due to the surface plasmon resonance (SPR) property. The UV-Vis spectra of the obtained NPs revealed a band at 390 nm, which is typical of Zn NPs (Jiménez-Rosado et al, 2022). FTIR spectra studies confirmed the presence of various biofunctional groups such as -C-O-, -OH, -C=O involved in the green synthesis of Zn NP nanoparticles.…”

Section: Discussionmentioning

confidence: 69%

Antidiabetic and antiglycation potential of zinc nanoparticles encompassed Gymnema sylvestre R. Br. extract

Verma¹,

Zala²,

Macwan³

et al. 2022

J. Phytonanotech. Pharmaceut. Sci.

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The green approach for the synthesis of nanoparticles has a wide range of applications in modern science due reduced toxicity with increased drug efficiency. In the current study, zinc nanoparticles (Zn NPs) were synthesised from the antidiabetic plant, G. sylvestre as a capping and reducing agent. The obtained Zn NPs were examined using techniques including UV-Vis, FTIR, and HR-TEM. Zn NPs were investigated for their potential as antidiabetics and capability to prevent protein glycation in vitro. The UV-vis absorption spectrum displays an absorption band at 374 nm, which gives confirmation of synthesised zinc nanoparticles. According to the results from FTIR spectral studies, the presence of various bioactive compounds capped on the surface of Zn nanoparticles was confirmed. HR-TEM micrographs show that the particles were highly mono-dispersed in needle shape. The antioxidant potential of aqueous leaf extract and Zn NPs were measured using the free radical (2, 2-Diphenyl-1-picrylhydrazyl-DPPH) scavenging activity. Zn NPs show the most powerful antioxidant activity when compared to aqueous leaf extract of G. sylvestre and was similar to that of ascorbic acid as a standard. Accordingly, the main focus of this study was the alpha amylase inhibition of Zn NPs obtained from the leaves of G. sylvestre plant. The result showed that Zn nanoparticles exhibited higher -amylase inhibition activity when compared with G. sylvestre extracts. The percentage of inhibition indicated a concentration-dependent reduction. In addition, bovine serum albumin-fructose assay revealed that Zn NPs significantly inhibited the formation of advanced glycation end (AGEs) products when compared to aqueous plant extract. These results provide evidence that Zn NPs mediated by G. sylvestre inhibit the -amylase enzyme as well as the formation of AGEs. Biogenic Zn NPs synthesised from G. sylvestre leaves is an exemplary therapeutic mediator to deliver zinc, have significant implications in the treatment of several diseases, including diabetes mellitus.

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Section: Discussionmentioning

confidence: 69%

Antidiabetic and antiglycation potential of zinc nanoparticles encompassed Gymnema sylvestre R. Br. extract

Verma¹,

Zala²,

Macwan³

et al. 2022

J. Phytonanotech. Pharmaceut. Sci.

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“…The crystal structure of BN and fBN/MO nanoparticles was evaluated by using XRD (Figure b). BN has characteristic signals at 26.88° (002), 41.96° (100), 55.46° (004), 76.08° (110), and 82.43° (110). , fBN/CuO has specific signals for Cu nanoparticles with a face-centered cubic structure observed at 75.16° (220), and for a monoclinic structure of CuO nanoparticles the signals were seen at 35.48° (002), 38.82° (111), 49° (200), 53.62° (020), 61.64° (113), 66.24° (311), and 68.14° (220). , For fBN/ZnO nanoparticles, the signals at 31.98° (100), 34.42° (002), 36.44°(101), 47.57° (102), 56.60° (110), 63.10° (103), 66.76° (200), 68.02° (112), 69.30° (201), and 72.76° (004) indicate the hexagonal-phased ZnO nanoparticles . fBN/CuO and fBN/ZnO nanoparticles have a crystallinity index and a crystallite size of 62.51%, 107 nm and 73.76%, 208 nm, respectively.…”

Section: Resultsmentioning

confidence: 99%

Beyond Conventional: Antibacterial, Antioxidant, and Photocatalytic Properties of Nanofibers Featuring Metal-Oxide-Modified Boron Nitride Nanoparticles

Horzum,

Doğan,

Karaduman

et al. 2024

ACS Appl. Polym. Mater.

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CuO-, ZrO 2 -, and ZnO-immobilized functional boron nitride (fBN) nanoparticles were synthesized by an environmentally friendly approach using a Stevia rebaudiana extract. Metal-oxide-immobilized fBN nanoparticles (fBN/MO)-incorporated (1 wt %) polyvinyl alcohol/poly(acrylic acid) composite nanofibers were fabricated by electrospinning, and their antibacterial, antioxidant, and photocatalytic properties were investigated. fBN/CuO and fBN/ ZnO nanoparticles were distributed randomly, showcasing nonuniform geometries besides polygonal-shaped fBN/ZrO 2 nanoparticles. fBN/MO nanoparticles exhibited a uniform dispersion along the composite nanofibers, with diameters between 115 and 160 nm. The incorporation of fBN/MO nanoparticles into the composite nanofibers (0.074−0.753 W/mK) resulted in an improvement in both thermal stability and conductivity when compared with PVA/PAA nanofibers (0.063 W/mK). fBN/MO-modified composite nanofibers exhibited an antibacterial efficacy exceeding 99% against Streptococcus mutans, Acinetobacter baumannii, Escherichia coli, and Staphylococcus aureus, augmenting their antioxidant properties. The modified composite nanofibers, particularly those incorporating fBN/ZrO 2 nanoparticles, exhibited effective photocatalytic remediation against methylene blue (MB) with the highest activity, attributed to their favorable morphological and optoelectronic properties, resulting in a remarkably more than 20-fold improvement. Enhanced stability for repeated treatment of MB for a minimum of three cycles was achieved. The multifunctional nature of nanofibers unveils synergistic antibacterial, antioxidant, and photodegradation effects, positioning them as promising for biomaterials and water disinfection.

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“…The importance of these green methods is not only based on environmental factors but also on other interesting features that they may provide. Thus, it has been shown that green methods are typically inexpensive, effective, rapid and non-toxic, generally producing nanoparticles with high crystallinity and various shapes and sizes [ 17 , 18 , 19 ]. These characteristics were reported to depend on two groups of parameters, including the composition of raw materials and additives used, as well as the processing conditions applied during the synthesis of NPs.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of FexOy Nanoparticles with Potential Antioxidant Properties

et al. 2022

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Iron oxide nanoparticles (FexOy-NPs) are currently being applied in numerous high-tech sectors, such as in chemical sectors for catalysis and in the medical sector for drug delivery systems and antimicrobial purposes, due to their specific, unique and magnetic properties. Nevertheless, their synthesis is under continuous investigation, as physicochemical methods are considered expensive and require toxic solvents. Thus, green nanotechnology has shown considerable promise in the eco-biogenesis of nanoparticles. In the current study, FexOy-NPs were synthesized by two different methods: via green synthesis through the use of polyphenols, which were extracted from Phoenix dactylifera L.; and via chemical synthesis, in which the reducing agent was a chemical (NaOH), and iron chloride was used as a precursor. Thus, polyphenol extraction and its ability to produce nanoparticles were evaluated based on the drying temperature used during the Phoenix dactylifera L. recollection, as well as the extraction solvent used. The results highlight the potential of polyphenols present in Phoenix dactylifera L. for the sustainable manufacture of FexOy-NPs. Finally, green and chemical syntheses were compared on the basis of physicochemical characteristics and functional properties.

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Green synthesis of ZnO nanoparticles using polyphenol extracts from pepper waste (Capsicum annuum)

Cited by 50 publications

References 50 publications

Antidiabetic and antiglycation potential of zinc nanoparticles encompassed Gymnema sylvestre R. Br. extract

Antidiabetic and antiglycation potential of zinc nanoparticles encompassed Gymnema sylvestre R. Br. extract

Beyond Conventional: Antibacterial, Antioxidant, and Photocatalytic Properties of Nanofibers Featuring Metal-Oxide-Modified Boron Nitride Nanoparticles

Green Synthesis of FexOy Nanoparticles with Potential Antioxidant Properties

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