Eco-friendly synthesis of ZnO nanomaterial from green tea extract: photocatalytic, antibacterial and antioxidant potential

Vieira, Italo Rennan Sousa; Silva, Arianne A. da; Silva, Bruno Dutra da; Neto, Luiz Torres; Tessaro, Letícia; Furtado, Cristina R. G.; Sousa, Atos Alves de; Carvalho, Nakédia M. F.; Conté-Júnior, Carlos Adam

doi:10.1007/s13399-023-04456-7

Cited by 10 publications

(7 citation statements)

References 73 publications

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“…These plant materials offer several advantages, such as productivity, eco-friendliness, a wide range of sources, and cost-effectiveness. Recent studies have reported the economic benefits of using green processes involving plant extracts for the synthesis of nanoparticles, such as ZnO, Ag, Cu/CuO, Fe 0 , MgO, and Co3O4 nanoparticles (Pugazhendhi et al 2019;Rama et al 2020;Hao et al 2021;Chakraborty et al 2022;Parvathalu et al 2023;Safdar et al 2023;Vieira et al 2023). These studies elucidate that the green synthesis process remains a popular subject in recent years.…”

Section: Introductionmentioning

confidence: 84%

Green synthesis of copper nanoparticles using white tea leaf extract: Characterization, adsorption behavior, and antibacterial applications

Huang,

Zhao,

Liu

et al. 2024

BioRes

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Biosynthesis of metal nanoparticles is a cost-effective and environmentally friendly technology. In the present study, copper nanoparticles (CuNPs) were synthesized using white tea leaf extracts. They were then characterized for their chemical structure and evaluated ability for the methylene blue (MB) degradation in the adsorption system with H2O2. XRD and FTIR analyses revealed that the CuNPs were present as an amorphous phase, with the O-H polyphenol compound bound to the Cu ion. The XPS deconvolution indicated the presence of Cu2+ and Cu+ in the CuNPs. TEM images revealed that the average particle size was less than 10 nm. The CuNPs synthesized using different precursors exhibited effective ability for the MB degradation in the adsorption system. Based on the adsorption theory, the pseudo-second-order model fitted well with the experimental data, and the thermodynamic calculation suggested that the reaction was endothermic, and spontaneous. The CuNPs synthesized using the CuSO4 precursor exhibited higher antibacterial activity compared to those synthesized using Cu(NO3)2. In conclusion, white tea leaf extract is an inexpensive and easily available precursor for the biosynthesis of copper nanoparticles. Further analysis based on an assumed degradation work will be considered in future work.

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Section: Introductionmentioning

confidence: 84%

Green synthesis of copper nanoparticles using white tea leaf extract: Characterization, adsorption behavior, and antibacterial applications

Huang,

Zhao,

Liu

et al. 2024

BioRes

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“…•− ) and hydroperoxyl (•OOH), which can degrade DNA, proteins, and lipids, decreasing metabolism and leading to cell death [20,24].…”

Section: Antimicrobial Effect Of Nanocomposite Films On Cooked Turkey...mentioning

confidence: 99%

“…Lately, zinc oxide nanoparticles (ZnO NPs) have gained prominence due to their multifunctional properties, including good optical, semiconductor, antioxidant, and antimicrobial properties, being a potential alternative for developing food packaging films [ 6 ]. Additionally, ZnO is biocompatible, non-toxic, and can be used in various biomedical and food applications [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, conventional nanomaterial synthesis methods, such as chemical reduction, microemulsion, and thermal decomposition, are often harmful to the environment due to the use of severe conditions, toxic chemicals, and high production costs [ 21 ]. In contrast, green synthesis emerges as a sustainable and eco-efficient alternative, minimizing the use of toxic substances and harmful environmental residues [ 20 ]. Moreover, green synthesis methods using natural extracts and biomass residues have attracted interest recently due to the wide variety of plant species and available natural resources [ 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

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Nanocomposite Films of Babassu Coconut Mesocarp and Green ZnO Nanoparticles for Application in Antimicrobial Food Packaging

Mirres,

Vieira,

Tessaro

et al. 2024

Foods

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In this work, novel nanocomposite films based on babassu coconut mesocarp and zinc oxide nanoparticles (ZnO NPs), synthesized by a green route, were produced for application as food packaging films. The films were prepared using the casting method containing different contents of ZnO NPs (0 wt%, 0.1 wt%, 0.5 wt%, and 1.0 wt%). The films were characterized by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), instrumental color analysis, and optical properties. The water vapor permeability (WVP) and tensile strength of films were also determined. The antimicrobial activity of the films against cooked turkey ham samples contaminated with Staphylococcus aureus was investigated. The results showed that incorporating ZnO NPs into babassu mesocarp matrices influenced the structure of the biopolymer chains and the color of the films. The BM/ZnO-0.5 film (0.5 wt% ZnO NPs) showed better thermal, mechanical, and WVP properties. Furthermore, the synergistic effect of babassu mesocarp and ZnO NPs in the BM/ZnO-0.5 film improved the antimicrobial properties of the material, reducing the microbial count of S. aureus in cooked turkey ham samples stored under refrigeration for 7 days. Thus, the films produced in this study showed promising antimicrobial packaging materials for processed foods.

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“…EGCG is a polyphenol with medicinal potential mainly found in green tea ( Camellia sinensis ) [ 44 ]. Among its properties include antioxidant, antimicrobial, anti-inflammatory, antifungal, anti-viral, anti-cardiovascular, and antihypertensive activity [ 14 ].…”

Section: Overview Of Polyphenols and Their Anticancer Propertiesmentioning

confidence: 99%

Recent Progress in Nanotechnology Improving the Therapeutic Potential of Polyphenols for Cancer

Vieira,

Tessaro,

Lima

et al. 2023

Nutrients

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Polyphenols derived from fruits, vegetables, and plants are bioactive compounds potentially beneficial to human health. Notably, compounds such as quercetin, curcumin, epigallocatechin-3-gallate (EGCG), and resveratrol have been highlighted as antiproliferative agents for cancer. Due to their low solubility and limited bioavailability, some alternative nanotechnologies have been applied to encapsulate these compounds, aiming to improve their efficacy against cancer. In this comprehensive review, we evaluate the main nanotechnology approaches to improve the therapeutic potential of polyphenols against cancer using in vitro studies and in vivo preclinical models, highlighting recent advancements in the field. It was found that polymeric nanomaterials, lipid-based nanomaterials, inorganic nanomaterials, and carbon-based nanomaterials are the most used classes of nanocarriers for encapsulating polyphenols. These delivery systems exhibit enhanced antitumor activity and pro-apoptotic effects, particularly against breast, lung, prostate, cervical, and colorectal cancer cells, surpassing the performance of free bioactive compounds. Preclinical trials in xenograft animal models have revealed decreased tumor growth after treatment with polyphenol-loaded delivery systems. Moreover, the interaction of polyphenol co-delivery systems and polyphenol–drug delivery systems is a promising approach to increase anticancer activity and decrease chemotherapy side effects. These innovative approaches hold significant implications for the advancement of clinical cancer research.

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Eco-friendly synthesis of ZnO nanomaterial from green tea extract: photocatalytic, antibacterial and antioxidant potential

Cited by 10 publications

References 73 publications

Green synthesis of copper nanoparticles using white tea leaf extract: Characterization, adsorption behavior, and antibacterial applications

Green synthesis of copper nanoparticles using white tea leaf extract: Characterization, adsorption behavior, and antibacterial applications

Nanocomposite Films of Babassu Coconut Mesocarp and Green ZnO Nanoparticles for Application in Antimicrobial Food Packaging

Recent Progress in Nanotechnology Improving the Therapeutic Potential of Polyphenols for Cancer

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