scholarly journals Plant-Mediated Green Synthesis of Iron Nanoparticles

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Mihir Herlekar ◽  
Siddhivinayak Barve ◽  
Rakesh Kumar
Keyword(s):  
Magnetic Nanoparticles ◽  
Inorganic Nanoparticles ◽  
Noble Metal Nanoparticles ◽  
Biological Synthesis ◽  
The Novel ◽  
Research Focus ◽  
Plant Resources ◽  
Chemical Methods ◽  
Synthesis Of Nanoparticles ◽  
Physical And Chemical

In the recent years, nanotechnology has emerged as a state-of-the-art and cutting edge technology with multifarious applications in a wide array of fields. It is a very broad area comprising of nanomaterials, nanotools, and nanodevices. Amongst nanomaterials, majority of the research has mainly focused on nanoparticles as they can be easily prepared and manipulated. Physical and chemical methods are conventionally used for the synthesis of nanoparticles; however, due to several limitations of these methods, research focus has recently shifted towards the development of clean and eco-friendly synthesis protocols. Magnetic nanoparticles constitute an important class of inorganic nanoparticles, which find applications in different areas by virtue of their several unique properties. Nevertheless, in comparison with biological synthesis protocols for noble metal nanoparticles, limited study has been carried out with respect to biological synthesis of magnetic nanoparticles. This review focuses on various studies outlining the novel routes for biosynthesis of these nanoparticles by plant resources along with outlining the future scope of work in this area.

Plant mediated green synthesized Magnetite Nanoparticles (Fe3O4 NPs) for Antioxidant, antibacterial, Anticancer activities-A review

2021 ◽  
pp. 146-151
Keyword(s):  
Plant Extracts ◽  
Magnetite Nanoparticles ◽  
Biomedical Applications ◽  
Low Cost ◽  
Anticancer Activities ◽  
Chemical Methods ◽  
Synthesis Of Nanoparticles ◽  
Fe3o4 Nps ◽  
Methods Of Synthesis ◽  
Physical And Chemical

The usage of various plant extracts for green synthesis of magnetite nanoparticles, these plant extracts gaining importance day today when compared to the physical and chemical methods of synthesis due to its various advantages such as low cost, biocompatible, biodegradable, non-toxic. They also act as both reducing and capping agents during the synthesis of nanoparticles and this association achieved various pharmaceutical, and other biomedical applications. this study investigates the Plant mediated green synthesized Magnetite Nanoparticles (Fe3O4 NPs) for Antioxidant, antibacterial, Anticancer activities

Indole alkaloids from Ervatamia orientalis. I. Isolation of alkaloids and structural identification of two dimers

1975 ◽  
Vol 28 (8) ◽  
pp. 1813 ◽  
Author(s):  
JR Knox ◽  
J Slobbe
Keyword(s):  
Indole Alkaloids ◽  
Structural Identification ◽  
The Novel ◽  
Chemical Methods ◽  
Ethanol Extracts ◽  
Physical And Chemical

Ethanol extracts of Ervatamia orientalis have yielded the following known alkaloids: ibogaine, iboxygaine, voacristine, vobasine, dregamine, tabernaemontanine, apparicine, voacamine and 16- demethoxycarbonylvoacamine. In addition, two new dimeric alkaloids of the voacamine group and the novel 2-acylindoles ervatamine, 20- epiervatamine and 19-dehydroervatamine have been isolated from the extracts. The two new dimeric compounds have been identified by physical and chemical methods as 16-demethoxycarbonyldihydrovoacamine and 16-demethoxycarbonyl-20?-epi-dihydrovoacamine.

The emerging roles of arthropods and their metabolites in the green synthesis of metallic nanoparticles

2016 ◽  
Vol 5 (6) ◽  
Author(s):  
Agbaje Lateef ◽  
Sunday A. Ojo ◽  
Joseph A. Elegbede
Keyword(s):  
Cost Effectiveness ◽  
Green Synthesis ◽  
Metal Nanoparticles ◽  
Metallic Nanoparticles ◽  
Animal Species ◽  
Chemical Methods ◽  
Synthesis Of Nanoparticles ◽  
Safe Handling ◽  
Nanoscience And Nanotechnology ◽  
Physical And Chemical

AbstractNanotechnology has remained relevant as a multifacet discipline, which cuts across different areas of science and technology. Several successful attempts had been documented regarding the involvement of biological materials in the green synthesis of various metal nanoparticles (MeNPs) because of their eco-friendliness, cost-effectiveness, safe handling, and ultimately less toxicity as opposed to the physical and chemical methods with their concomitant problems. Biological agents, including bacteria, fungi, algae, enzymes, plants, and their extracts, have been implicated in most cases by several authors. Moreover, nanotechnology in recent times has also made an inroad for animal species, specifically arthropods and metabolites thereof to be used as excellent candidates for the green synthesis of MeNPs. The increasing literature on the use of metabolites of arthropods for the green synthesis of nanoparticles has necessitated the need to document a review on their relevance in nanobiotechnology. The review, which represents the first of its kind, seeks to underscore the importance of arthropods in the multidisciplinary subject of nanoscience and nanotechnology.

scholarly journals Synthesis of Silver Nanoparticles in Photosynthetic Plants

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Ram Prasad
Keyword(s):  
Silver Nanoparticles ◽  
Environmentally Friendly ◽  
Cost Effective ◽  
Biological Science ◽  
Present Review ◽  
Synthesis Process ◽  
Chemical Methods ◽  
Synthesis Of Nanoparticles ◽  
Biological Methods ◽  
Physical And Chemical

Nanobiotechnology is emerging as a field of applied biological science and nanotechnology. Synthesis of nanoparticles is done by various physical and chemical methods but the biological methods are relatively simple, cost-effective, nontoxic, and environmentally friendly methods. The present review focuses on the synthesis of nanoparticles with special emphasis on the use of plants parts for the synthesis process, its applications, and future prospectus.

scholarly journals Antibacterial Activity, Characterizations, and Biological Synthesis of Manganese Oxide Nanoparticles using the Extract of Aloe vera

2020 ◽  
Vol 7 (3) ◽  
pp. 27-29
Author(s):  
Naveen Chandra Joshi ◽  
Faisal Siddiqui ◽  
Mohd Salman ◽  
Ajay Singh
Keyword(s):  
Green Synthesis ◽  
Manganese Oxide ◽  
Bacterial Species ◽  
Aloe Vera ◽  
Good Alternative ◽  
Antibacterial Activities ◽  
Inorganic Nanoparticles ◽  
Biological Synthesis ◽  
Diffusion Method ◽  
Physical And Chemical

Green nanotechnology is relatively new branch of science and technology with many interesting applications. This technology involves in the synthesis of inorganic nanoparticles (NPs) through green synthesis using extracts of plant-derived materials. Green synthesis of metal and metal oxide NPs is a good alternative over the other conventional physical and chemical methods. This study deals with the green synthesis of manganese oxide (MnO2) NPs using the extract of Aloe vera. The green synthesized MnO2 NPs have been synthesized using various analytical methods such as Fourier transform infrared, X-ray diffraction, and field emission scanning electron microscope. MnO2 NPs were tested for antibacterial activities against Escherichia coli, Streptococcus mutans, and Staphylococcus aureus using well diffusion method. The experimental results were indicating that the MnO2 NPs are good antibacterial agents against different bacterial species.

scholarly journals Biogenic selenium nanoparticles (SeNPs) from citrus fruit have anti-bacterial activities

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ghalia Batool Alvi ◽  
Muhammad Shahid Iqbal ◽  
Mazen Mohammed Saeed Ghaith ◽  
Abdul Haseeb ◽  
Bilal Ahmed ◽  
...  
Keyword(s):  
Metallic Nanoparticles ◽  
Metal Salt ◽  
Citrus Fruit ◽  
Antimicrobial Activities ◽  
Selenium Nanoparticles ◽  
Biological Synthesis ◽  
Synthesis Of Nanoparticles ◽  
E Coli ◽  
Fruit Extracts ◽  
Physical And Chemical

AbstractNanotechnology deals with the synthesis of materials and particles at nanoscale with dimensions of 1–100 nm. Biological synthesis of nanoparticles, using microbes and plants, is the most proficient method in terms of ease of handling and reliability. Core objectives of this study were to synthesize metallic nanoparticles using selenium metal salt from citrus fruit extracts, their characterization and evaluation for antimicrobial activities against pathogenic microbes. In methodology, simple green method was implicated using sodium selenite salt solution and citrus fruit extracts of Grapefruit and Lemon as precursors for synthesizing nanoparticles. Brick red color of the solution indicated towards the synthesis of selenium nanoparticles (SeNPs). Nanoparticle’s initial characterization was done by UV–Vis Spectrophotometry and later FTIR analysis and DLS graphs via Zetasizer were obtained for the confirmation of different physical and chemical parameters of the nanoparticles. Different concentrations of SeNPs were used for antimicrobial testing against E. coli, M. luteus, B. subtilis and K. pneumoniae comparative with the standard antibiotic Ciprofloxacin. SeNPs possessed significant antimicrobial activities against all the bacterial pathogens used. Conclusively, SeNPs made from citrus fruits can act as potent antibacterial candidates.

Plant derived silver nanoparticles and its therapeutic applications

2020 ◽  
Vol 21 ◽  
Author(s):  
Arpita Roy
Keyword(s):  
Physicochemical Properties ◽  
Nanoparticle Synthesis ◽  
Biological Synthesis ◽  
Chemical Methods ◽  
Factors Affecting ◽  
Biological Methods ◽  
Physical And Chemical ◽  
Silver Nanoparticle Synthesis ◽  
Shape And Size ◽  
Synthesis Of Materials

Background: Nanotechnology involves the synthesis of materials that are in nanometre sizes (1 to 100 nm). Nanotechnology has appeared as a new area of fundamental science and is getting worldwide consideration due to its extensive applications. They have exceptional physicochemical properties due to their unique size, shape and size distribution. Methods: Conventionally nanoparticles were synthesized using physical and chemical methods. These methods have various disadvantages therefore biological methods possess great interest. Biological synthesis uses bacteria, fungi, algae and plants. Results: Biosynthesis of nanoparticles using plants emerges as nanofactories as they offer nontoxic, clean and eco-friendly method with various physicochemical properties. Out of all the nanoparticles, silver attends special attention due to their various therapeutical and environmental applications. Conclusion: Therefore, in this review, a summary of various reports within the last ten years where plants were utilized for silver nanoparticle synthesis has been discussed. Further mechanism involves synthesis, factors affecting the process of synthesis and therapeutical applications has been discussed.

scholarly journals Biological Synthesis of Nanoparticles Using Endophytic Microorganisms: Current Development

2020 ◽  
Author(s):  
Omar Messaoudi ◽  
Mourad Bendahou
Keyword(s):  
Interdisciplinary Approach ◽  
Chemical Processes ◽  
Biological Synthesis ◽  
Metallic Ions ◽  
Current Development ◽  
Synthesis Of Nanoparticles ◽  
Endophytic Microorganisms ◽  
Attractive Option ◽  
Biological Entities ◽  
Physical And Chemical

Nanotechnology is a new emerging interdisciplinary approach created by pairing of engineering, chemical, and biological approaches. This technology produces nanoparticles using different methods of traditional physical and chemical processes; however, the outlook in this field of research is to use ecofriendly, nontoxic, and clean methods for the synthesis of nanoparticles. Biological entities, such as plants, bacteria, fungi, algae, yeast, and actinomycetes, are the best candidate to achieve this goal. Among the biological route, those involve endophtic microorganisms to reduce metallic ions into nanoparticles. This method is considered as an attractive option and can open a new horizon on the interface of biology and nanotechnology. The present chapter highlights the latest research about endophytic microorganisms and their application in the synthesis of nanoparticles, as well as the mechanisms involved in the formation of nanoparticles.

Biogenic Strain of Silver and Selenium Nanoparticles by Pseudomonas fluorescens and Cladosporium sp. JAPSK3 Isolated from Coal Mine Samples and Their Antimicrobial Activity

2015 ◽  
Vol 14 (05n06) ◽  
pp. 1550017 ◽  
Author(s):  
Nidhi Singh ◽  
Prasenjit Saha ◽  
Karthik Rajkumar ◽  
Jayanthi Abraham
Keyword(s):  
Antimicrobial Activity ◽  
Pseudomonas Fluorescens ◽  
Pathogenic Bacteria ◽  
Selenium Nanoparticles ◽  
Biological Synthesis ◽  
Microbial Culture ◽  
Synthesis Of Nanoparticles ◽  
Force Microscopy ◽  
Atomic Force ◽  
Physical And Chemical

Selenium and silver have unique properties and great potential in the field of physics, chemistry and biology. The bacterial strain Pseudomonas fluorescens was isolated by using Kings'B media and Cladosporium sp. was isolated by using potato dextrose agar for soil sample collected from Andhra Pradesh coal field of Singareni. Rapid formation of stable silver and selenium nanoparticles ( AgNPs ; SeNPs ) were observed on exposure of the microbial culture with solution of silver nitrate and sodium selenite. The nanoparticles were characterized by UV-visible spectroscopy, X-ray diffraction (XRD) and atomic force microscopy (AFM). Further, the biologically synthesized nanoparticles were found to have efficient antimicrobial activity against pathogenic bacteria, thus implying significance of the present study in production of biomedical products. AgNPs synthesized by P. fluorescens showed more antimicrobial activity than Cladosporium sp. As the AgNPs are much smaller in size, they showed effective antimicrobial activity when compared to that of SeNPs which showed less effective antimicrobial activity in both P. fluorescens and Cladosporium sp. The microbes are capable of reducing both AgNPs and SeNPs . The biological synthesis of nanoparticles is useful when compared with other physical and chemical methods as they are eco-friendly.

Feelings of Figures in Novel Notes Juang Fiersa Besari (Personality Ludwig Klages)

2020 ◽  
Vol 8 (3) ◽  
pp. 13
Author(s):  
Faridatus Soleha
Keyword(s):  
Qualitative Approach ◽  
Personality Structure ◽  
Personality Theory ◽  
The Novel ◽  
Research Focus ◽  
The Third ◽  
Analyze Data

This study aims to describe the feelings of the characters in the novel Juang Notes by Fiersa Bersari and researchers analyze using personality theory originated by Ludwig Klages by focusing his study on the personality structure of feelings. Feeling is a process of someone accepting or rejecting something in life. This study uses a qualitative approach by using library techniques to obtain data that will produce a description of the words or sentences in the observed study. In the analysis of this research using the hermeutics technique, in the hermeutics technique there are several stages, namely reading the research object in this study in the form of a fighting journal, the second gives a mark on the data that has been obtained from the reading results, the third provides code or coding on the data that has been found, and the fourth is to analyze data that has been obtained from the object of research in accordance with the specified research focus. Novel Notes Juang by Fiersa Besari is a novel that can be used as an inspiration for readers in living life. Based on the results of the study it was found that in the Fighting Notes novel there is a feeling that is divided into inner activities and the level of clarity, inner activities in the novel in the form of fear and guilt while viewed from the level of clarity in the form of happiness, sadness and longing.

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