Green synthesis of silver nanoparticles using plant extracts and their antimicrobial activities: a review of recent literature (original) (raw)
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Metallic nanoparticles are being utilized in every phase of science along with engineering including medical fields and is still charming scientists to explore new dimensions for their respective worth which is generally attributed to their corresponding small sizes. The up-andcoming researches have proven their antimicrobial significance. Among several noble metal nanoparticles, silver nanoparticles have attained a special focus. Conventionally silver nanoparticles are synthesized by chemical method using chemicals as reducing agents which later on become accountable for various biological risks due to their general toxicity; engendering the serious concern to develop environment friendly processes. Thus, to solve the objective; biological approaches are coming up to fill the void; for instance green syntheses using biological molecules derived from plant sources in the form of extracts exhibiting superiority over chemical and/ or biological methods. These plant based biological molecules undergo highly controlled assembly for making them suitable for the metal nanoparticle syntheses. The present review explores the huge plant diversity to be utilized towards rapid and single step protocol preparatory method with green principles over the conventional ones and describe the antimicrobial activities of silver nanoparticles.
Metallic nanoparticles are being utilized in every phase of science along with engineering including medical fields and are still charming the scientists to explore new dimensions for their respective worth which is generally attributed to their corresponding small sizes. The up-andcoming researches have proven their antimicrobial significance. Among several noble metal Antimicrobial nanoparticles, silver nanoparticles have attained a special focus. Conventionally silver nanoparticles are synthesized by chemical method using chemicals as reducing agents which later on become accountable for various biological risks due to their general toxicity; engendering the serious concern to develop environment friendly processes. Thus, to solve the objective; biological approaches are coming up to fill the void; for instance green syntheses using biological molecules derived from plant sources in the form of extracts exhibiting superiority over chemical and/or biological methods. These plant based biological molecules undergo highly controlled assembly for making them suitable for the metal nanoparticle syntheses. The present review explores the huge plant diversity to be utilized towards rapid and single step protocol preparatory method with green principles over the conventional ones and describes the antimicrobial activities of silver nanoparticles.
Interest in the biosynthesis of nanoparticles has increased in the last era by researchers. Nanoparticles have several applications in different fields like optoelectronics, magnetic devices, drug delivery, and sensors. Nanoparticle synthesis by green methods is safe for the environment and should be explored and encouraged popularly since various plants' have the high extent to form these nanoparticles. Worldwide, UV spectroscopy, Xray diffraction, Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), Dynamic Light Scattering (DLS), Atomic Force Microscopy (AFM) besides Fourier Transform Infrared Spectroscopy (FTIR) are used in many ways for characterize nanoparticles. The most advantageous use of AgNPs is their great attribution to be used as antimicrobial agents. Finally, concept of AgNPs synthesis is deserved to be the modern technical and medical concern. The current review shows a complete comprehensive and analytical survey of the biosynthesis of AgNPs with a particular focus on their activities as antimicrobials and the possible theories of their effect on the microbial cell and all influenced secondary metabolites.
Processes, 2019
Nano-sized metals have been introduced as a promising solution for microbial resistance to antimicrobial agents. Silver nanoparticles (AgNPs) have been proven to possess good antimicrobial activity. Green synthesis of AgNPs has been reported as safe, low cost and ecofriendly. This methodology uses extracts originating from different plants to reduce silver ions from AgNO 3 into nano-sized particles. In this study, extracts of several plants including ginger, garlic, capsicum and their mixtures were successfully used to produce AgNPs. Numerous spectroscopic, light scattering and microscopic techniques were employed to characterize the synthesized AgNPs. Agar well diffusion assay was performed to investigate the antimicrobial activity of AgNPs. The biosynthesized AgNPs have spherical shape with a size range of 20-70 nm. Garlic extract, pure or in mixture with ginger extract, generated AgNPs of the smallest size. The presence of the plant-origin capping agents surrounding AgNPs was proven by Fourier-transform infrared spectroscopy. The AgNPs, at a concentration of 50 µg/mL, demonstrated potent antimicrobial activity against Staphyloccocus aureus, Escherichia coli and Candida albicans as indicated by the zones of. Our results revealed that AgNPs having potent antimicrobial activity could be prepared using different pure plant extracts and their mixtures.
Indonesian Journal of Chemistry
Nanotechnology explores nanoscale materials that can be used in a wide range of industries such as biotechnology, cosmetics, drug delivery, nanomedicine, and biosensors. Nanoparticles in diverse shapes and sizes can be prepared through physical, chemical, and biological methods. The employment of reducing agents, which will change their form, size range, level of stability, and interaction, is a crucial part thus employing a biological approach is necessary. Chemically generated metal oxide nanoparticles raise considerable issues owing to the usage of hazardous and poisonous chemicals, as well as the potential for conservational impairment. In contrast, the production of silver nanoparticles using the principal method of green synthesis has found a special place in research that is considered more environmentally approachable requiring the use to produce non-toxic nanomaterials. Plants and polymer materials have received a lot of interest in the preparation of nanoparticles since th...
Journal of Chemistry , 2020
Developments in nanotechnology and natural product research toward the search for novel antibacterial agents have drawn the interest of many scientists to the synthesis of silver nanoparticles (AgNPs) from natural product (especially plants) due to its numerous benefits over other methods of synthesis such as been easy, economical, convenient, and environmental friendly. Aside from the aforementioned advantages, the synthesis of AgNPs from medicinal plant has been reported as the best approach of synthesizing AgNPs with great biological activities due to the numerous biomolecules found in plants. Recently, the number of researches toward the improvement of the yield, morphological properties, analytical techniques, and the development of optimal conditions and exact mechanism for synthesizing AgNPs from plants have been increasing tremendously. In this review, we present a comprehensive report on the recent development in the synthesis, optimization conditions, mechanism, and characterization techniques of AgNPs synthesized from plant extracts. Furthermore, a thorough discussion on the recent advances in the application of AgNPs synthesized from plant as therapeutic agent against bacterial infections was made.
Synthesis of Biogenic Silver Nanoparticles From Medicinal Plant And It’s Antibacterial Activity
IOSR Journal of Applied Chemistry, 2016
Biological synthesis of nanoparticles from medicinal plant is gaining importance due to its ecofriendliness. The synthesis of metal nanoparticles is a broad research area due to the potential applications for the development of different novel technologies. In our research work, we have described a cost effective and eco-friendly technique for the green synthesis of silver nanoparticles and evaluated their Antibacterial activity. Synthesis and characterization of silver nanoparticles were carried out by using Crateva religiosa plant bark extract as reducing agent as well as capping agent. The Synthesized nanoparticles were characterized with UV-Visible spectrometry(UV-Vis), Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM) and X-ray Diffraction Spectroscopy(XRD). The antibacterial activity of silver nanoparticles has been Observed.
Synthesis of silver nanoparticles from plant extracts and their antimicrobial application
International Journal of Biosciences (IJB)
Development of reliable and eco-friendly process for synthesis of nanoparticles is an important step in the field the of nanotechnology. Nanotechnology involves the tailoring of materials at the atomic level to attain unique properties, which can be suitably manipulated for the desired applications. Among them silver nanoparticles draw attention due to its unique physical, chemical and biological properties. Green principle route of synthesizing have emerged as alternative to overcome the limitation of conventional methods among which plant and microorganisms are majorly exploited. Employing plants towards synthesis of nanoparticles are emerging as advantageous compared to microbes with the presence of broad variability of bio molecules in plants can act as capping and reducing agents and thus increases the rate of reduction and stabilization of nanoparticles. This review focuses on the green synthesis of silver nanoparticles using various plant sources and its applications in cancer treatment. Generally surgery, chemotherapy and radiation treatment are the most prevalent therapeutic option for cancer. Unfortunately these treatments have various side effects due to lack of targeted delivery and cancer specificity. To overcome these limitations, nanoparticle could ensure targeted drug therapy having very little side effects. In this review focus is given to silver nanoparticle, synthesized from natural plant extracts, as it is cost effective, eco-friendly, stable and safe in cancer treatment.
Metallic nanoparticles are mostly used in medical fields as it has small size and can easily be used in different applications. In this review, silver nanoparticles and its antimicrobial activities are elaborated for ease of study from different research papers. It has been proven by researchers that nanoparticles have antimicrobial properties. In all metallic nanoparticles, silver nanoparticles have much attention towards antimicrobial properties. Chemicals are used as reducing agents to synthesize nanoparticles, hence it can be used in various biological risks and activities because of its toxic nature also having environmental friendly nature. Biological molecules screened out from plant extracts are used in green synthesis as they are prominent over chemical methods. Plants have vital role in synthesis of metal nanoparticles because plants have biological molecules. This review describes plant diversity which mostly meets with silver nanoparticles having antimicrobial activities.
2023
The biosynthesis of metal nanoparticles (NPs) using plant extracts is one of the simplest, most useful, affordable, and environmentally friendly solutions to prevent the use of dangerous chemicals. The unique antimicrobial properties of silver (Ag) NPs have attracted the most interest among all the other nanoparticles. Concerns regarding the synthesis of these NPs, including the use of hazardous solvents and precursor chemicals, microbial contamination and the creation of toxic byproducts, led to the development of the new alternative process known as "green synthesis." As a result, various environmentally acceptable methods for producing Ag NPs quickly using aqueous extracts of plant parts like bark, roots, leaves, and so forth have been published in recent years. We discuss contemporary advancements in the environmentally friendly manufacturing of AgNPs, their application as antifungal agents, and their mode of action in this study. This review provides insight into the environmentally friendly manufacturing of Ag NPs, their application as antifungal agents with their mode of action, as well as their future prospects.