scholarly journals Comparative Antimicrobial Activity of Silver Nanoparticles Synthesized by Corynebacterium glutamicum and Plant Extracts

2019 ◽  
Vol 16 (3(Suppl.)) ◽  
pp. 0689
Author(s):  
Mohammad Et al.
Keyword(s):  
Antimicrobial Activity ◽  
Green Synthesis ◽  
Corynebacterium Glutamicum ◽  
Plant Extracts ◽  
Spinacia Oleracea ◽  
Synthesis Method ◽  
Nanoparticle Synthesis ◽  
Physical Method ◽  
Environmentally Benign ◽  
Ag Nps

           Biosynthesis of nanoparticles has received considerable attention due to the growing need to develop environmentally benign nanoparticle synthesis processes that do not use toxic chemicals. Therefore, biosynthetic methods employing both biological agents such as bacteria and fungus or plant extracts have emerged as a simple and a viable alternative to chemical synthetic and physical method .It is well known that many microbes produce an organic material either intracellular or extracellular which is playing important role in the remediation of toxic metals through reduction of metal ions and acting as interesting Nano factories. As a result, in the present study Ag NPs were synthesized by two methods biosynthetic technique using supernatant of Corynebacterium glutamicum that isolated from soil and green synthesis method by using plant extracts of fresh green plants.Ag NPs which synthesized by two methods were investigated visually by monitoring the color shift of reaction mixture from pale yellow to brown color, UV-Visible spectrophotometer was used to measure maximum absorbance of synthesized Ag NPs. The nanoparticles synthesized from Corynebacterium glutamicum exhibited maximum antimicrobial activity against selected pathogenic and environmental strains more than Ag NPs synthesized by green synthesis method from Spinacia oleracea, Malva parviflora and Eruca sativa. plant extracts

scholarly journals Anticancer Activity of Silver Nanoparticle by Using Cassia auriculata Extract

2020 ◽  
pp. 1-9
Author(s):  
M. Prem Nawaz ◽  
A. Afroos Banu ◽  
S. Raja Mohamed ◽  
M. Palanivelu ◽  
A. Ayeshamariam
Keyword(s):  
Green Synthesis ◽  
Synthesis Method ◽  
Precursor Solution ◽  
Cotton Fabrics ◽  
X Ray Diffraction ◽  
Ag Nps ◽  
X Ray ◽  
Cassia Auriculata ◽  
Transmission Electron ◽  
Mcf 7

In this study, green synthesis of silver nanoparticles (Ag NPs) has done using traditional herbal namely Cassia auriculata extract by the simple Green synthesis method. The synthesized Ag nanoparticles were studied by the characterization techniques includes X-ray diffraction (XRD) crystallography for nature of crystalline with relevant parameters, Transmission electron microscopy (TEM) for particle size as well as the SAED patterns for amorphous, crystalline or polynanocrystalline and Photoluminescence analysis were carried out for the prepared NPs. Ag NPs were fabricated utilizing Phyto-aquatic extract of Cassia auriculata which act as a reducing agent, and it was converted into a precursor solution to coat on cotton fabrics for antibacterial applications. To further, its performance on anticancer application was studied for Michigan Cancer Foundation-7 (MCF-7) line breast cancer.

scholarly journals Medicinal herbs as a panacea for biogenic silver nanoparticles

2022 ◽  
Vol 46 (1) ◽  
Author(s):  
Habeeb Hiba ◽  
John E. Thoppil
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Plant Extracts ◽  
Scientific Community ◽  
Nanoparticle Synthesis ◽  
Green Innovation ◽  
Gas Emissions ◽  
Online Library

Abstract Background Scientists created a new area known as "green nanotechnology" by combining the concept of sustainability with nanotechnology. Its goal is to eliminate the use of chemicals in nanoparticle manufacturing by replacing them with plant-based materials. Green synthesis is promoted as the best alternative to the traditional method of nanoparticle synthesis in this new domain. Plants that constitute a major portion of our biodiversity are embraced with inherent potentiality to be transformed as miracle medicine due to its phytochemicals. These phytochemicals efficiently replace the classical wet chemical ingredients involved in nanoparticle synthesis by upgrading to greener method for its synthesis. By incorporating plant-based sources as the chief ingredient of nanoparticle synthesis, we are able to reduce the hazards of greenhouse gas emissions and enlighten the insights of our scientific community with nanotechnology for green innovation. Hence, this review simultaneously aims at promoting plant extracts as the most efficient as well as renewable recipe for green synthesis of silver nanoparticles and preparing earth for a greener tomorrow. Methodology Scientific articles and publications were selected from reputed journals and sorted out with pertinent keywords of this review. Electronic sources like Google Scholar, PubMed, Research Gate, Science Direct, Wiley Online Library, Web of Science and Scopus were searched for potential articles and recent breakthroughs published in the area of silver nanoparticle synthesis via green chemistry and biological methods using plant extracts. Scientific names of medicinal plants were checked using botanical databases like Plant List and International Plant Names Index. Conclusion This review pinpoints on empowering better life on earth by protecting it from hazardous effects of conventional nanotechnological production through replacing the former with sustainable green synthesis approach. Ergo, it outlines that by incorporating plant-based sources as the chief ingredient of nanoparticle synthesis, we are able to reduce the hazards of greenhouse gas emissions in turn by slowing down increasing climate change disasters globally and enlighten the insights of our scientific community with nanotechnology for green innovation.

scholarly journals Solution Plasma-Assisted Green Synthesis of MnO2 Adsorbent and Removal of Cationic Pollutant

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Hye-min Kim ◽  
Nagahiro Saito ◽  
Dae-wook Kim
Keyword(s):  
Methylene Blue ◽  
Green Synthesis ◽  
Dye Removal ◽  
Synthesis Method ◽  
Structural Features ◽  
Environmentally Benign ◽  
Cationic Dye ◽  
Removal Mechanism ◽  
Initial Concentration ◽  
Benign Synthesis

In this study, we proposed the solution plasma- (SP-) assisted green synthesis method using plants extracts, i.e., glucose, with the expectation of acting as a reducing agent and promotor for the formation of powder state of nanostructured MnO2. MnO2 was simply and rapidly synthesized within 10 min by the SP-assisted method. The structural features and morphology of as-synthesized MnO2 were characterized by XRD, Raman, FE-SEM, and TEM analyses. For potential application of as-synthesized MnO2, cationic dye, i.e., methylene blue (MB), removal performance was investigated by batch experiment at an initial concentration of C0 = 100 mg L−1. The obtained MnO2 exhibited effective dye removal ability given high C0, and simultaneously applied plasma discharging further enhanced removal efficiency. These contributions therefore open a new window not only on a powerful and environmentally benign synthesis route for efficient adsorbents but also on supporting multiple removal mechanism.

scholarly journals NEEM (AZADIRACHTA INDICA A. JUSS) AS A SOURCE FOR GREEN SYNTHESIS OF NANOPARTICLES

2018 ◽  
Vol 11 (3) ◽  
pp. 15 ◽  
Author(s):  
Girish K
Keyword(s):  
Green Synthesis ◽  
Plant Extracts ◽  
Azadirachta Indica ◽  
Low Cost ◽  
Synthesis Method ◽  
Neem Extract ◽  
Synthesis Of Nanoparticles ◽  
Potential Applications ◽  
Vast Area ◽  
Biomedical Fields

 Nanoscience has found various applications in different biomedical fields. The synthesis of nanoparticles (NPs) has become a vast area of research due to its potential applications. These particles can be prepared by different chemical, physical, and biological approaches. In recent years, green synthesis of NPs using plant extracts has gained much interest due to non-toxicity and very low cost of synthesis. The plant extracts act both as reducing agent as well as capping agent. Neem (Azadirachta indica A. Juss) is a well-known medicinal plant and has been studied for the biosynthesis of NPs. A. indica has various phytochemicals identified that can reduce the metal ions. The bioreduction of NPs from neem extract is an eco-friendly, low cost, and green synthesis method and these NPs are reported to exhibit good antimicrobial, mainly antibacterial, activity

scholarly journals Natural synthesis of silver nanoparticles from grape fruit juice and estimation of antimicrobial activity

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Mehreen Fatima ◽  
Azra Quraishi ◽  
Maida Irfan
Keyword(s):  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Synthesis Method ◽  
Antimicrobial Effect ◽  
Tomato Juice ◽  
Zone Of Inhibition ◽  
Nanoparticle Preparation ◽  
Biochemical Research ◽  
Grape Fruit Juice

Silver has been known for its antimicrobial activity for a very long time. Formulation of silver particles that range from 1-100nm in size makes it even more potent to induce antimicrobial effect. Green chemistry has started to become more frequent in the field of biochemical research. Silver nanoparticles synthesized from green synthesis method provide a cheap and environmental friendly method of nanoparticle preparation. The aim of the current study is green synthesis of silver nanoparticles using tomato juice as reducing and capping agent and evaluation of its antimicrobial activity. The stability and conformation of SNPs was determined by UV-visible spectroscopy. The antimicrobial activity of synthesized SNPs was determined against E.coli DH5α. Ultraviolet spectroscopic analysis offered peak at 400 nm that indicate the production of SNPs of adequate size.  E.coli DH5α showed considerable decrease upon introduction of SNPs to the bacterial inoculum. Upon increasing the concentration of silver nanoparticles an increase in zone of inhibition was recorded.  For 70µg/ml of SNPs, the zone of inhibition was 0.5 cm, while 0.6 cm, 0.7 cm and 0.7cm was recorded for 100µg/ml, 150µg/ml and 200µg/ml of SNPs respectively. The efficacy of antimicrobial activity of SNPs derived from tomato juice proves its potential use in pharmaceutical and medicinal industries for synthesis of nanomedicine.  

Green Synthesis of Metallic Nanoparticles Using Plant Compounds and Their Applications

2016 ◽  
pp. 1-34
Author(s):  
Selvaraj Arokiyaraj ◽  
Muthupandian Saravanan ◽  
Rajaraman Bharanidharan ◽  
Villianur Ibrahim Hairul Islam ◽  
Mohamed Bououdina ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Plant Extracts ◽  
Metallic Nanoparticles ◽  
Biomedical Applications ◽  
Biological Activities ◽  
Synthesis Method ◽  
Synthesis Of Nanoparticles ◽  
Phytochemical Constituents ◽  
Size And Morphology ◽  
Plant Compounds

The advancement in nanoparticulate system has a great impact in many scientific areas. Metallic nanoparticles (NPs) such as silver, gold and copper were found to exhibit antibacterial and other biological activities. The phytochemical constituents (Tannins, flavonoids, terpenoids, saponins and glycosides) present in the plant extracts were used for the green synthesis of NPs of desired size and morphology. Moreover, these active molecules act as reducing and capping agents for the synthe¬sis of NPs, which makes them suitable for biomedical applications. Apart from many approach on synthesis of nanoparticles, green synthesis method becomes more preferable because of its ecofriendly and nontoxic approach. This approach might pave the path for researchers across the globe to explore the potential of different herbs in the synthesis of NPs. This chapter will discuss the synthesis of various metal NPs using plants and their phytochemical constituent's involved during the synthesis. A section devoted to the different applications will be presented.

scholarly journals Green Synthesis, Characterization and Antimicrobial activity of Silver Nanoparticles from the Extract of Lagerstroemia speciosa

2021 ◽  
Vol 37 (3) ◽  
pp. 648-655
Author(s):  
Vinit Prakash ◽  
Harpreet Kaur ◽  
Anjana Kumari ◽  
Manoj Kumar ◽  
Sumeet Gupta ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Kidney Diseases ◽  
Ethanolic Extract ◽  
Antimicrobial Activities ◽  
Diffusion Method ◽  
Bacterial Strains ◽  
Ag Nps

Lagerstroemia speciosais commonly known as Banaba or Jarul which is used to get rid of various ailments such as fever, urinary infection, decongestion, diarrhoea, mouth ulcers, astringent, diabetes mellitus, kidney diseases, abdominal pains etc. The present work, describes the green synthesis of silver nanoparticles from ethanolic extract of fruits of L.speciosa (Ls-Ag NPs) and their analysis for antimicrobial activities. The characterisation of so obtained nanoparticles have been carried out with help of Field emission scanning electron microscopy (FESEM) and High-resolution transmission electron microscopy (HRTEM). Further, antimicrobial activities of ethanolic extract of fruits of L.speciosa(Ee-Ls), silver oxide (Ag2O), and Ls-Ag NPs have been examined by using well-diffusion method against two bacterial strains: Staphylococcus aureus (gram-positive) and Escherichia coli (gram-negative) and one fungal strain: Aspergillus niger.It has been observed that the biosynthesized Ls-Ag NPs possess much effective antimicrobial activity against selected strains as compared to Ee-Ls and Ag2O.

Green synthesis of gold nanoparticles using quail egg yolk and investigation of potential application areas

2017 ◽  
Vol 6 (1) ◽  
Author(s):  
Hayrunnisa Nadaroglu ◽  
Selvi Ince ◽  
Azize Alayli Gungor
Keyword(s):  
Gold Nanoparticles ◽  
Green Synthesis ◽  
High Pressures ◽  
Synthesis Method ◽  
Nanoparticle Synthesis ◽  
Egg Yolk ◽  
Morphological Properties ◽  
Scientific Development ◽  
Physical Methods ◽  
Egg Yolks

AbstractNanotechnology is a growing area of research. For example, gold nanoparticles have a wide variety of applications, including optical, electronic, and medical; they are also used as catalysts in biosensor applications and can be used for scanning, carrier, heat source, and sensors. Therefore, nanoparticle synthesis is of great importance to the country’s economy and to scientific development. Nanoparticle synthesis involves using chemical methods, physical methods, or both chemical and physical methods. The synthesis is performed at high pressures or high temperatures and severe conditions, both of which have a high cost in terms of energy. In our investigation, we used a green synthesis method, which used quail eggs that required more moderate conditions and less energy. The yolk from quail eggs has a high protein and vitamin content. Using quail egg yolks, the reaction conditions were optimized in terms of pH, temperature, and concentration. The morphological properties of the obtained gold nanoparticles were characterized using an ultraviolet-visible spectrophotometer, a scanning electron microscope, and an X-ray diffraction analysis.

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