Recent trends in green synthesis of silver, gold, and zinc oxide nanoparticles and their application in nanosciences and toxicity: a review

Shah, Muhammad Musaddiq; Ahmad, Khurshid; Ahmad, Bashir; Shah, Shahid Masood; Masood, Hamid; Siddique, Muhammad Aamir Ramzan; Rostami, A.

doi:10.1007/s41204-022-00287-5

Cited by 12 publications

(4 citation statements)

References 123 publications

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“…Another study by Shah et al [ 58 ] and Eisazadeh et al [ 59 ] examined the effect of Ag NPs on hydrolytic enzymes such as lipase and cellulase to be potentially used in the detergent industry. They revealed that Ag NPs affect the secondary structure of lipase and cause the reduction in its catalytic activity whereas loss of anti-microbial activity and stability of Ag NPs was reported upon interaction with the lipase.…”

Section: Discussionmentioning

confidence: 99%

Enhancement effect of AgO nanoparticles on fermentative cellulase activity from thermophilic Bacillus subtilis Ag-PQ

Hussain,

Yasin,

Ahmad

et al. 2023

Journal of Genetic Engineering and Biotechnology

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Background Cellulase is an important bioprocessing enzyme used in various industries. This study was conducted with the aim of improving the biodegradation activity of cellulase obtained from the Bacillus subtilis AG-PQ strain. For this purpose, AgO and FeO NPs were fabricated using AgNO3 and FeSO4·7H2O salt respectively through a hydro-thermal method based on five major steps; selection of research-grade materials, optimization of temperature, pH, centrifuge, sample washed with distilled water, dry completely in the oven at the optimized temperature and finally ground for characterization. The synthesized NPs were characterized by scanning electron microscope (SEM), energy dispersive X-ray (EDX), and X-ray diffraction (XRD) to confirm the morphology, elemental composition, and structure of the sample respectively. The diameter of the NPs was recorded through SEM which lay in the range of 70–95 nm. Results Cultural parameters were optimized to achieve better cellulase production, where incubation time of 56 h, inoculum size of 5%, 1% coconut cake, 0.43% ammonium nitrate, pH 8, and 37 °C temperature were found optimal. The enhancing effect of AgO NPs was observed on cellulase activity (57.804 U/ml/min) at 50 ppm concentration while FeO NPs exhibited an inhibitory effect on cellulase activity at all concentrations. Molecular docking analysis was also performed to understand the underlying mechanism of improved enzymatic activity by nanocatalysts. Conclusion This study authenticates AgO NPs as better nanocatalysts for improved thermostable cellulase biodegradation activity with the extraordinary capability to be potentially utilized in bioethanol production. Graphical Abstract

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Section: Discussionmentioning

confidence: 99%

Enhancement effect of AgO nanoparticles on fermentative cellulase activity from thermophilic Bacillus subtilis Ag-PQ

Hussain,

Yasin,

Ahmad

et al. 2023

Journal of Genetic Engineering and Biotechnology

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“…Among these MNPs, silver oxide nanoparticles (AgONPs) have emerged as prominent candidates due to their distinctive properties, which encompass significant antibacterial and antifungal activities, along with noteworthy anticancer potential. As a result, AgONPs find extensive utility in various commercial sectors, including biomedicine, food industries, and household products 8 , 17 , 18 .…”

Section: Introductionmentioning

confidence: 99%

Biogenic synthesis, characterization, and in vitro biological investigation of silver oxide nanoparticles (AgONPs) using Rhynchosia capitata

Ullah,

Iqbal,

Gul

et al. 2024

Sci Rep

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The current research aimed to study the green synthesis of silver oxide nanoparticles (AgONPs) using Rhynchosia capitata (RC) aqueous extract as a potent reducing and stabilizing agent. The obtained RC-AgONPs were characterized using UV, FT-IR, XRD, DLS, SEM, and EDX to investigate the morphology, size, and elemental composition. The size of the RC-AgONPs was found to be ~ 21.66 nm and an almost uniform distribution was executed by XRD analysis. In vitro studies were performed to reveal biological potential. The AgONPs exhibited efficient DPPH free radical scavenging potential (71.3%), reducing power (63.8 ± 1.77%), and total antioxidant capacity (88.5 ± 4.8%) to estimate their antioxidative power. Antibacterial and antifungal potentials were evaluated using the disc diffusion method against various bacterial and fungal strains, and the zones of inhibition (ZOI) were determined. A brine shrimp cytotoxicity assay was conducted to measure the cytotoxicity potential (LC50: 2.26 μg/mL). In addition, biocompatibility tests were performed to evaluate the biocompatible nature of RC-AgONPs using red blood cells, HEK, and VERO cell lines (< 200 μg/mL). An alpha-amylase inhibition assay was carried out with 67.6% inhibition. Moreover, In vitro, anticancer activity was performed against Hep-2 liver cancer cell lines, and an LC50 value of 45.94 μg/mL was achieved. Overall, the present study has demonstrated that the utilization of R. capitata extract for the biosynthesis of AgONPs offers a cost-effective, eco-friendly, and forthright alternative to traditional approaches for silver nanoparticle synthesis. The RC-AgONPs obtained exhibited significant bioactive properties, positioning them as promising candidates for diverse applications in the spheres of medicine and beyond.

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“…EDCs enter the environment via wastewater discharge, hospital waste disposal, leaching of chemicals from industrial plants and households, and pesticide residues. They often enter landfills and reach aquatic bodies, such as surface water, groundwater ( Gao et al, 2020 ), the marine environment ( Muller et al, 2020 ), freshwater reservoirs ( Rocha et al, 2019 ), and ultimately enter the food chain through sea food contamination ( Muller et al, 2020 ; Chen et al, 2022 ; Shah et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Sensor technologies for the detection and monitoring of endocrine-disrupting chemicals

Shah¹,

Ahmad

Boota³

et al. 2023

Front. Bioeng. Biotechnol.

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Endocrine-disrupting chemicals (EDCs) are a class of man-made substances with potential to disrupt the standard function of the endocrine system. These EDCs include phthalates, perchlorates, phenols, some heavy metals, furans, dimethoate, aromatic hydrocarbons, some pesticides, and per- and polyfluoroalkyl substances (PFAS). EDCs are widespread in the environment given their frequent use in daily life. Their production, usage, and consumption have increased many-fold in recent years. Their ability to interact and mimic normal endocrine functions makes them a potential threat to human health, aquatics, and wild life. Detection of these toxins has predominantly been done by mass spectroscopy and/or chromatography-based methods and to a lesser extent by advanced sensing approaches such as electrochemical and/or colorimetric methods. Instrument-based analytical techniques are often not amenable for onsite detection due to the lab-based nature of these detecting systems. Alternatively, analytical approaches based on sensor/biosensor techniques are more attractive because they are rapid, portable, equally sensitive, and eco-friendly. Advanced sensing systems have been adopted to detect a range of EDCs in the environment and food production systems. This review will focus on advances and developments in portable sensing techniques for EDCs, encompassing electrochemical, colorimetric, optical, aptamer-based, and microbial sensing approaches. We have also delineated the advantages and limitations of some of these sensing techniques and discussed future developments in sensor technology for the environmental sensing of EDCs.

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Recent trends in green synthesis of silver, gold, and zinc oxide nanoparticles and their application in nanosciences and toxicity: a review

Cited by 12 publications

References 123 publications

Enhancement effect of AgO nanoparticles on fermentative cellulase activity from thermophilic Bacillus subtilis Ag-PQ

Enhancement effect of AgO nanoparticles on fermentative cellulase activity from thermophilic Bacillus subtilis Ag-PQ

Biogenic synthesis, characterization, and in vitro biological investigation of silver oxide nanoparticles (AgONPs) using Rhynchosia capitata

Sensor technologies for the detection and monitoring of endocrine-disrupting chemicals

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