Algal production of nano-silver and gold: Their antimicrobial and cytotoxic activities: A review

El‐Sheekh, Mostafa M.; El-Kassas, Hala Y.

doi:10.1016/j.jgeb.2016.09.008

Cited by 88 publications

(31 citation statements)

References 116 publications

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“…ere are four ways to synthesize microalgae nanoparticles: Several microalgal species have been exploited for the biosynthesis of nanomaterials by using their extracted biomolecules [29,30]. To obtain gold nanoplates, the microalgal biomass is first lyophilized and then it is subjected to RP-HPLC, i.e., reverse-phase high performance liquid chromatography, until the gold shape-directing protein (GSP), which is responsible for directing the shape of nanoparticles, is isolated.…”

Section: Microalgal Nanoparticlesmentioning

confidence: 99%

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Advances in Synthesis and Applications of Microalgal Nanoparticles for Wastewater Treatment

Agarwal¹,

Gupta²,

Agarwal³

2019

Journal of Nanotechnology

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Rapid industrialization, economic development, and population overgrowth are the major reasons responsible for the release of organic and inorganic substances into the environment, further leading to environmental pollution and contamination of water. Nowadays, it is truism that wastewater treatment has raised concern worldwide and is the need of the hour. Therefore, it is necessary to conserve sustainable energy and adopt advanced wastewater treatment technologies. Microalgae culture is gaining tremendous attention as it provides a combined benefit of treating wastewater as a growth medium and algae biomass production which can be used for several livestock purposes. Microalgae are ubiquitous and extremely diverse microorganisms which can accumulate toxic contaminants and heavy metals from wastewater, making them superior contender to become a powerful nanofactory. Furthermore, they are versatile, relatively convenient, and easy to handle, along with various other advantages such as synthesis can be performed at low temperature with greater energy efficiency, less toxicity, and low risk to the environment. Comparing with other organisms such as fungi, yeast, and bacteria, microalgae are equally important organisms in the synthesis of nanoparticles; therefore, the study of algae-mediated biosynthesis of nanometals can be taken towards a newer branch and it has been termed as phytonanotechnology. Here, an overview of recent advances in wastewater treatment processes through an amalgamation of nanoparticles and microalgae is provided.

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Section: Microalgal Nanoparticlesmentioning

confidence: 99%

“…Metallic nanoparticles can be synthesized by both live and died dried biomasses. Algae such as Chlorella vulgaris, Spirulina platensis, and Lyngbya majuscule have been reported for the efficient biosynthesis of silver nanoparticles [29].…”

Section: Microalgal Nanoparticlesmentioning

confidence: 99%

Advances in Synthesis and Applications of Microalgal Nanoparticles for Wastewater Treatment

Agarwal¹,

Gupta²,

Agarwal³

2019

Journal of Nanotechnology

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“…Recently, synthesis of silver nanoparticles using microorganisms, algae and plant extracts is already performed. The development of bionanotechnology in microalgae has shown that nano silver biosynthesis (nano silver) has increased the ability of microalgae as antimicrobial, antifungal and anticancer (Devi and Bimba, 2012;Rajesh et al, 2012;Sudha et al, 2013;Anuradha et al, 2014;Patel et al, 2015;Duong et al, 2016;El-Sheekh and El-Kassas, 2016;Rajeshkumar et al, 2012). Integration of microalgae with nano silver has wider the spectrum of antimicrobials capability in microalgae.…”

Section: Introductionmentioning

confidence: 99%

“…Eco-friendly nanoparticles have advantages especially in compatibility with pharmaceuticals over physical, chemical and microbial synthesis. High cost, inefficient treatment, contamination of toxic chemicals were leading to several effects when silver nanoparticles are being applied in the medical and pharmaceutical applications (Balashanmugam and Kalaichelvan, 2015;El-Sheekh and El-Kassas, 2016).…”

Section: Introductionmentioning

confidence: 99%

Formation of Eco-friendly Silver Nanoparticle Microalgae using Chlorella vulgaris

et al. 2019

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Biosynthesized silver nanoparticles (AgNPs) using organism have spurred great interest as a antimicrobial and biomedical agents. Green microalgae have advantages as they are easily available, grow rapidly and producing varieties metabolites. Synthesized of AgNPs from microalgae C. vulgaris offer environmentally antimicrobial agent. The objectives of the study is producing AgNPs microalgae using C. vulgaris as eco-friendly antimicrobial agent. The research methods was conducted by synthesizing silver nanoparticle microalgae using C. vulgaris following by characterization under UV–visible spectroscopy, transmission electron microscopy (TEM), and scanning electron microscope (SEM) and Energy-dispersive X-ray spectroscopy (EDX). The research result showed AgNPs C. vulgaris microalgae were produced with and without agitation treatment under different condition. The synthesized AgNPs C. vulgaris exhibited a maximum absorption at 312 nm and 398 nm, and EDX analysis had determined that abundance chemical elements presented in a sample were carbon and silver. The TEM analysis revealed that they are spherical form. The spot of EDX analysis showed the presence of silver atoms. The SEM analysis shows the spherical shaped with some silver particle inside of the cell. These resut indicated that formation of silver nanoparticle microalgae using C. vulgaris has been succesfully obtained under the treatment.

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“…Microbicidal efficacy of phytosynthesized AgNPs using G. sylvestrae were represented in table 3. Among various metal nanoparticles, silver nanoparticles (AgNPs) in particular have been the focus of increasing interest due to their peculiar properties which can be tailored for a specific application by controlling the shape, size and morphology of the nanoparticles[48,49,50,51,52,53]. 400 µl of AgNPs remained resistant against Bacillus sp.…”

mentioning

confidence: 99%

Biogenic Potential of Stabilized Silver Nanoparticles Using G. Sylvestrae and Their Biological Assays

Anburaj¹,

Jothiprakasam²

2019

Int J App Pharm

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Objective: The idea of green chemistry has gained immense fame due to replace chemical products and improves technologies to eradicate substances that are harmful to the environment. In this paper, a rapid cost-efficient method was employed using herbal extract Gymnema sylvestrae because of their biological constituents present in the sample. Methods: Phytosynthesis of AgNPs were optimized under different reaction conditions using pH, temperature, incubated at various concentrations. Analyses of particles were revealed using UV-Vis, FTIR spectrum, morphology was observed in scanning electron microscope, particle analysis was done using Diffraction Light Scattering and bioactive constituents present in plant sample was analysed by High-performance liquid chromatography. Bioefficacy of synthesised AgNPs was assessed by means of microbicidal assay against various bacteria and fungi. Results: UV and FTIR analysis reveals the presence of plant extract responsible for stabilization and efficient reduction. Peptides to proteins, polyphenols, and many other secondary metabolites involved in the bioreduction were identified. SEM micrograph reveals the nature, size and distribution of the sample. HPLC chromatogram indicated the presence of gymnemagenin responsible for their biological assays. Broad spectrum of microbicidal activity have been reported in 400 µl of biosynthesized AgNPs against Bacillus sp. (24.5 mm), and S. epidermis (22.3 mm). Conclusion: Therefore G. sylvestrae synthesized silver nanoparticles were stable and acts as a reducing and capping agent detecting the presence of biomolecules. Biosynthesised AgNPs showing excellent antimicrobial activity and future prospects of this study indicates that these nanoparticles can be applied in drug delivery.

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Algal production of nano-silver and gold: Their antimicrobial and cytotoxic activities: A review

Cited by 88 publications

References 116 publications

Advances in Synthesis and Applications of Microalgal Nanoparticles for Wastewater Treatment

Advances in Synthesis and Applications of Microalgal Nanoparticles for Wastewater Treatment

Formation of Eco-friendly Silver Nanoparticle Microalgae using Chlorella vulgaris

Biogenic Potential of Stabilized Silver Nanoparticles Using G. Sylvestrae and Their Biological Assays

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