Biosynthesis and characterization of gold nanoparticles and its application in eliminating nickel from water

Barnawi, Najwa; Allehyani, Saud; Seoudi, R.

doi:10.1016/j.jmrt.2021.12.013

Cited by 37 publications

(7 citation statements)

References 37 publications

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“…Green synthesis of AuNPs is an effective strategy due to crucial aspects such as low-cost production, use of non-toxic reducing agents without additional stabilizers, production of size-controlled nanoparticles, use of renewable resources, and low energy consumption 13 , 14 . Currently, the green synthesis of nanoparticles using biological resources that are readily available in nature, such as plant extracts or microorganisms like actinomycetes, fungi, bacteria, and algae as potential nano-factories has been reported 15 , 16 . Microbial cells secrete numerous enzymes that cause the reduction of metal ions 17 .…”

Section: Introductionmentioning

confidence: 99%

Artificial neural network approach for prediction of AuNPs biosynthesis by Streptomyces flavolimosus, characterization, antitumor potency in-vitro and in-vivo against Ehrlich ascites carcinoma

El-Naggar,

Rabei,

Elmansy

et al. 2023

Sci Rep

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Gold nanoparticles (AuNPs) have emerged as promising and versatile nanoparticles for cancer therapy and are widely used in drug and gene delivery, biomedical imaging, diagnosis, and biosensors. The current study describes a biological-based strategy for AuNPs biosynthesis using the cell-free supernatant of Streptomyces flavolimosus. The biosynthesized AuNPs have an absorption peak at 530–535 nm. The TEM images indicate that AuNPs were spherical and ranged in size from 4 to 20 nm. The surface capping molecules of AuNPs are negatively charged, having a Zeta potential of − 10.9 mV. FTIR analysis revealed that the AuNPs surface composition contains a variety of functional groups as –OH, C–H, N–, C=O, NH3+, amine hydrochloride, amide group of proteins, C–C and C–N. The bioprocess variables affecting AuNPs biosynthesis were optimized by using the central composite design (CCD) in order to maximize the AuNPs biosynthesis. The maximum yield of AuNPs (866.29 µg AuNPs/mL) was obtained using temperature (35 °C), incubation period (4 days), HAuCl4 concentration (1000 µg/mL) and initial pH level 6. Comparison was made between the fitness of CCD versus Artificial neural network (ANN) approach based on their prediction and the corresponding experimental results. AuNPs biosynthesis values predicted by ANN exhibit a more reasonable agreement with the experimental result. The anticancer activities of AuNPs were assessed under both in vitro and in vivo conditions. The results revealed a significant inhibitory effect on the proliferation of the MCF-7 and Hela carcinoma cell lines treated with AuNPs with IC50 value of 13.4 ± 0.44 μg/mL and 13.8 ± 0.45 μg/mL for MCF-7 and Hela cells; respectively. Further, AuNPs showed potential inhibitory effect against tumor growth in tumor-bearing mice models. AuNPs significantly reduced the tumor volume, tumor weight, and decreased number of viable tumor cells in EAC bearing mice.

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Section: Introductionmentioning

confidence: 99%

Artificial neural network approach for prediction of AuNPs biosynthesis by Streptomyces flavolimosus, characterization, antitumor potency in-vitro and in-vivo against Ehrlich ascites carcinoma

El-Naggar,

Rabei,

Elmansy

et al. 2023

Sci Rep

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“…2c). Bernawi et al reported this type of UV-visible absorption spectra for the biosynthesized gold nanoparticle (Barnawi et al 2022).…”

Section: Uv-visible Spectroscopy Study Of the Synthesis Of Gold Nanop...mentioning

confidence: 93%

Grewia asiatica leaves extract assisted green synthesis of gold nanoparticles and study of their antibacterial, antioxidant and photocatalytic potential

Maryam,

Akhter,

Qamar

et al. 2024

Preprint

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The environmental issues generated by industrial advancement and human activities are serious and must not be overlooked. Bio-nanotechnology has emerged as a solution for producing biosynthetic nanomaterials to address environmental issues. The current work describes for the first time an economical and environmentally benign method of producing gold nanoparticles utilizing Grewia asiatica (GAAuNPs). The optimal AuNPs were produced using a gold ion concentration of 1 mM and a metal-to-extract ratio of 1:1. The resulting nanoparticles were analyzed and characterized using X-ray crystallography, FTIR, SEM, EDX, and UV visible spectroscopy. The catalytic methylene blue (MB) dye degradation properties, antibacterial and biofilm inhibition abilities, and antioxidant properties of the synthesized particles were investigated. The Au NPs demonstrated efficient catalytic degradation against MB and completely degraded it in 8 minutes. The NPs also exhibited potent biofilm inhibition against E. coli and S. aureus that was close to the standard and was more antioxidant than the standard. The findings highlight G. asiatica as a suitable, inexpensive biosource for biofabricating GAAuNPs with extensive multifunctional uses. To conclude, GAAuNPs' ability to degrade organic pollutants and eradicate pathogens provides a cost-effective and environmentally benign remedy to tackle contemporary pollutants.

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“…Even though the main study focused on nickel removal, the results showed 100% remediation for Pb. These NPs were used on Wilkerson Filters to confirm the results [21].…”

Section: Role Of Phytonanotechnology In Removal Of Water Contaminationmentioning

confidence: 96%

Role of Phytonanotechnology in the Removal of Water Contamination

Gole

John

Krishnamoorthy

et al. 2022

Journal of Nanomaterials

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Environmental pollution is expedited by the rapid increase in population, urbanization, industrialization, and growth in the global economy. Water contamination is accelerated by the incautious disposal of wastes into water bodies. The need of the hour is to develop novel, ergonomic, subsidized, and reproducible technologies that assist in the remediation of such wastes that require minimal human intervention, preserve the quality of water, and are eco-friendly. Phytonanotechnology is emerging as a promising strategy, characterized by the biosynthesis of metallic nanomaterials and nanoparticles (NPs) using plant-based sources. Conventional remediation technologies like adsorptive, reactive, in situ, ex situ, and open fabrication of phytogenic magnetic NPs (PMNPs) have already been established in scientific literature. A keen understanding of building material platforms, fabricating and performance-optimizing are required to develop nanomaterials capable of addressing environmental issues. Furthermore, their antimicrobial activity, biodegradability and biocompatibility, optoelectronic properties, low toxicity, availability, energy efficiency, and versatility have been utilized efficiently.

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Biosynthesis and characterization of gold nanoparticles and its application in eliminating nickel from water

Cited by 37 publications

References 37 publications

Artificial neural network approach for prediction of AuNPs biosynthesis by Streptomyces flavolimosus, characterization, antitumor potency in-vitro and in-vivo against Ehrlich ascites carcinoma

Artificial neural network approach for prediction of AuNPs biosynthesis by Streptomyces flavolimosus, characterization, antitumor potency in-vitro and in-vivo against Ehrlich ascites carcinoma

Grewia asiatica leaves extract assisted green synthesis of gold nanoparticles and study of their antibacterial, antioxidant and photocatalytic potential

Role of Phytonanotechnology in the Removal of Water Contamination

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