scholarly journals Optical and antimicrobial properties of silver nanoparticles synthesized via green route using honey

2020 ◽  
Vol 9 (1) ◽  
pp. 268-274
Author(s):  
Anuja S. Kumar ◽  
Gayathri Madhu ◽  
Elza John ◽  
Shinoj Vengalathunadakal Kuttinarayanan ◽  
Saritha K. Nair
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Antimicrobial Properties ◽  
Nanoparticle Synthesis ◽  
Cost Effective ◽  
Spectral Studies ◽  
Synthesis Methods ◽  
Synthesis Of Nanoparticles ◽  
Drug Of Choice ◽  
Antibiotic Drug

AbstractAmong the various green synthesis methods for nanoparticle synthesis, the honey-mediated green synthesis of nanoparticles is a fast, safe, biocompatible, and cost-effective method. In the present work, we demonstrate the sunlight-induced honey-mediated synthesis of silver nanoparticles and report the effect of light intensity, its color, and exposure time on the formation of nanoparticles. The visual inspection followed by UV-Vis spectral studies was performed to confirm the formation of silver nanoparticles. The HRTEM measurement confirms the formation of polydispersed silver particles. We further report the excellent antimicrobial activity of the synthesized nanoparticles against various strains of bacteria, which is found to be comparable to that of the antibiotic drug of choice. Our study points to further research on the possibility of considering these green synthesized silver nanoparticles as an alternative to antibiotics.

Green Synthesis of Silver Nanoparticles from the Leaf Extract of Volkameriainermis

2017 ◽  
Vol 9 (08) ◽  
Author(s):  
Lavanya Krishnadhas ◽  
Santhi R. ◽  
Annapurani S.
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Plant Extract ◽  
Raw Materials ◽  
Synergetic Effect ◽  
Cost Effective ◽  
Synthesis Methods ◽  
Bioactive Constituents ◽  
Synthesis Of Nanoparticles ◽  
By Products

Nanoparticles are gaining interest in biomedical applications due to its importance such as anti-bacterial, anti-fungal and anti-cancer agents. Conventional methods for the synthesis of metal nanoparticles involves toxic reagents which produce harmful by-products and are hazardous to the environment. To overcome these limitations, green synthesis of nanoparticles was established. Eco-friendly methods using plant extracts are gaining popularity due to the abundance of raw materials and the production of non-toxic by-products threatening to the environment. Moreover, the nanoparticles synthesized from the plant extract are cost-effective. In addition, nanoparticles produced by green synthesis methods produces synergetic effect where both the nanoparticles as well as the natural bioactive constituents of the plant influence the biocidal properties. Different methods namely heating in water bath, microwave oven and exposure to bright sunlight were adopted for the synthesis of silver nanoparticles. Plant extract based synthesis of silver nanoparticles was eco-friendly and shows an alternative promise in bio-medical applications and it undertakes the negative effects of synthetic drugs.

scholarly journals Honey Mediated Green Synthesis of Nanoparticles: New Era of Safe Nanotechnology

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Eranga Roshan Balasooriya ◽  
Chanika Dilumi Jayasinghe ◽  
Uthpala Apekshani Jayawardena ◽  
Ranasinghe Weerakkodige Dulashani Ruwanthika ◽  
Rohini Mendis de Silva ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Room Temperature ◽  
Nanoparticle Synthesis ◽  
Cost Effective ◽  
Synthesis Methods ◽  
New Era ◽  
Synthesis Of Nanoparticles ◽  
The Past ◽  
Gold Silver ◽  
Novel Concept

With the advent of nanotechnology, many related industries rapidly developed over the recent past. Generally, top-down and bottom-up approaches are the two major processes used to synthesize nanoparticles; most of these require high temperatures, vacuum conditions, and harsh/toxic chemicals. As a consequence, adverse effects impacted organisms including humans. Some synthesis methods are expensive and time-consuming. As a corollary, the concept of “green nanotechnology” emerged with the green synthesis of nanoparticles commencing a new epoch in nanotechnology. This involves the synthesis of nanomaterial from microorganisms, macroorganisms, and other biological materials. Honey is documented as the world’s oldest food source with exceptional medical, chemical, physical, and pharmaceutical values. Honey mediated green synthesis is a relatively novel concept used during the past few years to synthesize gold, silver, carbon, platinum, and palladium nanoparticles. Honey acts as both a stabilizing and a reducing agent and importantly functions as a precursor in nanoparticle synthesis. This method usually requires room temperature and does not produce toxic byproducts. In conclusion, honey mediated green synthesis of nanoparticles provides a simple, cost effective, biocompatible, reproducible, rapid, and safe method. The special activity of honey functionalized nanoparticles may provide valuable end products with numerous applications in diverse fields.

Evaluation of Cytotoxic Effect of Silver Nanoparticles (AgNP) Synthesized from Phlebodium aureum (L.) J. Smith Extracts

2020 ◽  
Vol 21 ◽  
Author(s):  
Johnson Marimuthu ◽  
Shibila Thangaiah ◽  
Amutha Santhanam ◽  
Vidyarani George
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Large Scale ◽  
Color Change ◽  
Nanoparticle Synthesis ◽  
Xrd Analysis ◽  
Nano Particles ◽  
Synthesis Methods ◽  
Aqueous Extracts ◽  
Ft Ir

Background:: Chemical synthesis methods are adverse in the medicinal field as they produce toxic in the surface whereas green synthesis provide advancement as well as they are cost effective, environment friendly, can be easily scaled up for large scale synthesis. Silver and silver nanoparticles have an important application in the medical industry such as tropical ointments which are used to prevent infection against burn and open wounds. There is no report on the green synthesis from Phlebodium aureum (L.) J. Smith. Objective:: The present study was aimed to synthesize silver nano-particles using Phlebodium aureum (L.) J. Smith extracts by green approach and to screen their cytotoxicity. Methods:: The synthesized AgNPs of P. aureum were characterized by FT-IR, SEM and XRD. The cytotoxicity of the aqueous extracts and AgNPs of P. aureum were determined. Results:: The silver nanoparticle synthesis was confirmed by color change from yellow to dark brown and absorption peak at 460 nm. FT-IR analysis confirmed the capping by proteins and other metabolites. XRD analysis confirmed the existence of silver nanaoparticles with a peak at 46.253°. The dose dependent cytotoxicity was observed in the aqueous and silver nanoparticles of P.aureum. Conclusion:: The present study gave a simple and cheap route to synthesize the AgNPs using aqueous extracts of P. aureum. The studied extracts of P. aureum can be considered as a promising candidate for a plant-derived anti-tumour compound.

scholarly journals Bionanofactories for Green Synthesis of Silver Nanoparticles: Toward Antimicrobial Applications

2021 ◽  
Vol 22 (21) ◽  
pp. 11993
Author(s):  
Ashvi Sanjay Jain ◽  
Pranita Subhash Pawar ◽  
Aira Sarkar ◽  
Vijayabhaskarreddy Junnuthula ◽  
Sathish Dyawanapelly
Keyword(s):  
Drug Delivery ◽  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Cost Effective ◽  
Biological Properties ◽  
Synthesis Of Nanoparticles ◽  
Physicochemical And Biological Properties ◽  
Living Organisms ◽  
Xrd Techniques ◽  
Shed Light

Among the various types of nanoparticles and their strategy for synthesis, the green synthesis of silver nanoparticles has gained much attention in the biomedical, cellular imaging, cosmetics, drug delivery, food, and agrochemical industries due to their unique physicochemical and biological properties. The green synthesis strategies incorporate the use of plant extracts, living organisms, or biomolecules as bioreducing and biocapping agents, also known as bionanofactories for the synthesis of nanoparticles. The use of green chemistry is ecofriendly, biocompatible, nontoxic, and cost-effective. We shed light on the recent advances in green synthesis and physicochemical properties of green silver nanoparticles by considering the outcomes from recent studies applying SEM, TEM, AFM, UV/Vis spectrophotometry, FTIR, and XRD techniques. Furthermore, we cover the antibacterial, antifungal, and antiparasitic activities of silver nanoparticles.

Innovative Eco-friendly Approaches for Green Synthesis of Silver Nanoparticles

2014 ◽  
Vol 7 (1) ◽  
pp. 2328-2337
Author(s):  
Rohit Rajendra Bhosale ◽  
A S Kulkarni ◽  
S S Gilda ◽  
N H Aloorkar ◽  
R A Osmani ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Metallic Nanoparticles ◽  
Human Life ◽  
Cost Effective ◽  
Synthetic Methods ◽  
Ag Nps ◽  
Synthesis Of Nanoparticles ◽  
Drug Molecules ◽  
Plant Leaf Extract

Nanotechnology is an escalating field that has made its contribution to all spheres of human life. The green synthesis of nanoparticles has paved for better methodologies and approaches in the medicinal field. Nowadays silver, gold and other metallic nanoparticles are used as an efficient carrier for drug molecules for developing novel drug delivery systems. In course of synthesizing these nanoparticles various chemicals, solvents and reagents are used which harms our eco system directly or indirectly. Silver nanoparticles (Ag NPs) have been widely used as a novel therapeutic agent extending its use as antibacterial, antifungal, anti-viral and anti-inflammatory agent. Silver nanoparticles (Ag NPs) prepared by green synthesis have many advantages over conventional methods involving chemical agents associated with environmental toxicity. Green synthetic methods include polysaccharide method, irradiation method, biological method, polyoxometallates method and tollens method. Green synthesis of nanoparticles is found to be an emerging branch of nanotechnology. The use of environmentally benign materials like plant leaf extract for the synthesis of nanoparticles offers numerous benefits of eco-friendliness and compatibility for pharmaceutical and biomedical applications as they do not use toxic chemicals in the synthesis protocols. Rapid and green synthetic methods using various plant extracts have shown a great potential in silver nanoparticles (Ag NPs) synthesis. This review article describes the bio-inspired synthesis of nanoparticles that provides advancement over chemical and physical methods as it is cost effective, eco-friendly and more effective in a variety of applications.

A Review on Green Synthesis of Silver Nanoparticles Through Plants

2020 ◽  
Vol 20 ◽  
Author(s):  
Hoor Shumail ◽  
Shah Khalid ◽  
Izhar Ahmad ◽  
Haroon Khan ◽  
Surriya Amin ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Tumor Imaging ◽  
Antimicrobial Properties ◽  
Silver Ions ◽  
Medical Application ◽  
Chemical Processes ◽  
Cytotoxic Activities ◽  
Synthesis Of Nanoparticles ◽  
Physical And Chemical

Background: Nature has the potential to reduce metal salts to their relative nanoparticles. Traditionally physical and chemical methods were used for the synthesis of nanoparticles but due to use of toxic chemicals, non-ecofriendly methods and other harmful effects, green chemistry approaches are now employed for synthesizing nanoparticles which are basically the most cost effective, ecofriendly and non-hazardous methods. Objective: In this review we aimed to valuate and study the details of various mechanisms used for green synthesis of silver nanoparticles from plants, their size, shape and potential applications. Results: Silver ions and their salts are well known for their antimicrobial properties and have been used in various medical and non-medical application since the emergence of human civilization. Miscellaneous attempts have been made to synthesize nanoparticles using plants and such nanoparticles are more efficient and beneficial in terms of their antibacterial, antifungal, antioxidant, anti-biofilm and cytotoxic activities than nanoparticles synthesized through physical and chemical processes. Results: Silver ions and their salts are well known for their antimicrobial properties and have been used in various medical and non-medical application since the emergence of human civilization. Miscellaneous attempts have been made to synthesize nanoparticles using plants and such nanoparticles are more efficient and beneficial in terms of their antibacterial, antifungal, antioxidant, anti-biofilm and cytotoxic activities than nanoparticles synthesized through physical and chemical processes. Conclusion: Silver nanoparticles have been studied as an important research area due to their specific and tunable properties and their application in the field of biomedicine such as tissue and tumor imaging and drug delivery. These nanoparticles can be further investigated to find out their antimicrobial potential in cell lines and animal models.

Green Synthesis of Silver Nanoparticles Using Momordica Charantia Fruit Extracts

2015 ◽  
Vol 1109 ◽  
pp. 35-39 ◽  
Author(s):  
M.K. Nahar ◽  
Zarina Zakaria ◽  
U. Hashim ◽  
Md Fazlul Bari
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Cost Effective ◽  
Momordica Charantia ◽  
Ion Concentration ◽  
Biological Synthesis ◽  
Synthesis Of Nanoparticles ◽  
Fruit Extracts ◽  
Absorbance Peak ◽  
First Time

The synthesis of nanoparticles is in the spotlight in modern nanotechnology. In recent years, the development of competent green chemistry methods for synthesis of metal nanoparticles (NPs) has become a main limelight of researchers. Biological synthesis of nanoparticles using plant extract is currently under exploitation. The first time in this paper we have reported the green synthesis of silver nanoparticles (AgNPs) by reduction of silver nitrate, using fruit extracts of Momordica charantia (bitter melon); commonly found plant in south East Asia. The reaction process for the synthesis of silver nanoparticles is simple, cost-effective, novel, rapid and eco-friendly route using fruit extract of M. charantia plant, which acted as a reducing and stabilizing agent simultaneously at room temperature. Formation of the nanosilver was confirmed by surface Plasmon spectra using UV-Vis spectrophotometer and absorbance peak at 440 nm. Different silver ion concentration and contact times were experimenting in the synthesis of silver nanoparticles. The prepared nanoparticles properties were characterized by UV-Vis.

Metallic Nanoparticle Synthesis by Green Chemistry

2018 ◽  
Vol 11 (6) ◽  
pp. 4287-4294
Author(s):  
Anikate Sood ◽  
Shweta Agarwal
Keyword(s):  
Green Chemistry ◽  
Green Synthesis ◽  
Biomedical Research ◽  
Metallic Nanoparticles ◽  
Nanoparticle Synthesis ◽  
Synthesis Methods ◽  
Metallic Nanoparticle ◽  
Medical Field ◽  
Advantages And Disadvantages ◽  
Gold Silver

Nanotechnology is the most sought field in biomedical research. Metallic nanoparticles have wide applications in the medical field and have gained the attention of various researchers for advanced research for their application in pharmaceutical field. A variety of metallic nanoparticles like gold, silver, platinum, palladium, copper and zinc have been developed so far. There are different methods to synthesize metallic nanoparticles like chemical, physical, and green synthesis methods. Chemical and physical approaches suffer from certain drawbacks whereas green synthesis is emerging as a nontoxic and eco-friendly approach in production of metallic nanoparticles. Green synthesis is further divided into different approaches like synthesis via bacteria, fungi, algae, and plants. These approaches have their own advantages and disadvantages. In this article, we have described various metallic nanoparticles, different modes of green synthesis and brief description about different metabolites present in plant that act as reducing agents in green synthesis of metallic nanoparticles. 

scholarly journals Optimization of Green Synthesis of Silver Nanoparticles from Leaf Extracts ofPimenta dioica(Allspice)

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Akshay Rajeev Geetha ◽  
Elizabeth George ◽  
Akshay Srinivasan ◽  
Jameel Shaik
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Leaf Extract ◽  
Synthesis Method ◽  
Leaf Extracts ◽  
Synthesis Of Nanoparticles ◽  
Hot Air ◽  
Vis Spectroscopy ◽  
Pimenta Dioica ◽  
First Time

Production of silver nanoparticles from the leaf extracts ofPimenta dioicais reported for the first time in this paper. Three different sets of leaves were utilized for the synthesis of nanoparticles—fresh, hot-air oven dried, and sun-dried. These nanoparticles were characterized using UV-Vis spectroscopy and AFM. The results were diverse in that different sizes were seen for different leaf conditions. Nanoparticles synthesized using sun-dried leaves (produced using a particular ratio (1 : 0.5) of the leaf extract sample and silver nitrate (1 mM), resp.) possessed the smallest sizes. We believe that further optimization of the current green-synthesis method would help in the production of monodispersed silver nanoparticles having great potential in treating several diseases.

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