Biosynthesis of Silver Nanoparticles and Its Applications

Firdhouse, M. Jannathul; Pottail, Lalitha

doi:10.1155/2015/829526

Cited by 197 publications

(125 citation statements)

References 222 publications

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“…As the extract was mixed with AgNO3 solution, there is an intense peak at 390nm as indication of nanoparticles formation along the disappearance of 550nm peak. Those specific peaks at around 380 nm -410 nm are the indication of plasmon resonance formation 2,7 . The corresponding peak was shifted to 400nm after aging and into 409 nm after refluxing process.…”

Section: Synthesis Of Ag Npsmentioning

confidence: 99%

“…Besides inexpensive, it is also considered friendly-environment and the use of plant extract has economically advantageous due to its availability 2 . Many reports present the potency of some plants extract containing flavonoid, flavon, polyphenol, natural dyes and some organic functional group for silver nanoparticle (Ag NPs) production 1,3 .…”

Section: Introductionmentioning

confidence: 99%

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Green Synthesis of Silver Nanoparticle from Photograph Wastewater Using Hylocereus Undatus Skin Extract

Fatimah¹,

Faridhatunnisa²

2017

Orient. J. Chem

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Green synthesis of nanoparticle utilizing plant extract is developing technique recently. A relative cheap and non-hazardous substance is an advantageous for this. Regarding to the potency of dragon fruit (Hylocereus undatus), this research employed the extract of dragon fruit waste (skin) and also photography waste as sources for synthesis. Effect of preparation method was studied by varying reflux and microwave irradiation method. Bioreductor of Hylocereus undatus was prepared by maceration of dried Hylocereus undatus skin. The extract was mixed with photograph wastewater followed by reflux and aging method separately. The nanoparticle formation was measured by using UV-Vis spectrophotometry and particle size analyzer. The nanoparticle solution was tested for antibacterial activity antioxidant activity by DPPH method. The result indicates that the extract of Hylocereus undatus is potential to be used as bioreductor in silver nanoparticle synthesis. The nanoparticles are found to have particle size in between 20-100nm. Nanoparticles are active antioxidant. The antioxidant activity of derived nanoparticles is influenced by method in that by reflux method the antioxidant activity is at around 88% while by 00% while by aging method the activity is 81.78%. Both values are higher compared to synthesis by using silver standard solution with the same methods.

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Section: Synthesis Of Ag Npsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Silver Nanoparticle from Photograph Wastewater Using Hylocereus Undatus Skin Extract

Fatimah¹,

Faridhatunnisa²

2017

Orient. J. Chem

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“…Doctors are beginning to use them in wound dressings as anti-microbial agents, in topically applied creams used to prevent wound infections, and even finds success in use as anticancer applications [16][17][18][19][20].…”

Section: Silver Nano Particles (Snps)mentioning

confidence: 99%

A review on preparation methods of SNPs and their biomedical applications

Ut¹,

Mk²,

Gvsn³

2017

Front Nanosci Nanotech

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Researchers have identified Silver Nano Particles (SNPs) as a key area of interest because of their unique shape and size dependent biomedical properties. They have discovered and invented a variety of methods for the synthesis of SNPs such as microwave irradiation techniques, laser ablation synthesis, biological synthesis, photochemical synthesis and chemical synthesis etc. In this review paper we overview the preparation of SNPs through various synthesis methods and also their applications in the bio-medical field. The main aim of this paper is to keep up to date with the myriad ongoing synthesis methods of synthesis of NPs and also examine their applications especially in the field of medicine. Silver Nano Particles (SNPs)Silver (Ag) is a white colored, lustrous looking, physically soft, transition element metal having high thermal and electrical conductivity. It has been used by humans earlier than the recorded history due to its ornamental, medical and therapeutic benefits even before realizing that microbes are the causative agents of infections. It is used by people in many forms such as solutions, foils, coins, vessels, sutures, and in colloids such as lotions, ointments etc. It is one of the most prominent therapeutic elemental agent in medicine for surgical infections and infectious diseases. The tangible advantages of silver have a bigger weightage than the intangible risk factors [1].Nanoscience is a novel multidisciplinary subject that depends on the basic physical and chemical properties displayed by nano level objects [2,3]. Nanoparticles have been shown to display amazing electromagnetic, surface optical and chemically catalytic characteristics than the macro bulk material owing to their extremely low volume to surface area ratio [4,5]. Metal nanoparticles such as silver show different colors due to their Surface Plasmon Resonance (SPR) phenomenon. It is a group oscillatory behavior of the free electrons of the metal nanoparticles having the same frequency of the light wave interactions, resulting in resonance, causing the SPR band to form in the infrared and visible region [6]. Nanoparticles, especially the metallic ones, whose production can be done through various methods, the usual ones being physical and chemical methods. The above-mentioned methods produce high purity, well-defined nanoparticles, but the reagents used in the synthesis are hazardous, energy consuming, expensive, toxic and not suitable for physiological or ecological applications. Research regarding the synthesis of metal nanoparticles was extensively covered in the past three decades, but research of nanosynthesis , based on plant extracts, bloomed only in the last ten years [7][8][9][10][11][12][13].Silver nanoparticles are finding themselves in the limelight due to their biological, chemical and physical properties that contributes to the bactericidal and fungicidal effects, catalytic activity and finds applications in nanobiotechnological research [14,15]. Doctors are beginning to use them in wound dressings as an...

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“…Among all metallic materials, silver is of particular interest because it is a powerful antibacterial agent, showing antimicrobial efficacy against bacteria, viruses, and microorganisms. This excellent antibacterial activity makes possible their use in different and varied fields such as food preservation, safe cosmetics, medical devices, water treatment, or textiles fabrics [3]. The large surface area and high surface energy of nanomaterials ensures better immobilization of nanoparticles onto fabrics leading to an increase in durability of the textile functions [4].…”

Section: Introductionmentioning

confidence: 99%

Microwave Mediated Impregnation of Silver Nanoparticles on Silk Fabric for Hygienic Clothing

Singh¹

2017

JBMOA

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Textile materials and clothing are known to be susceptible to microbial attack, as these provide large surface area and absorb moisture required for microbial growth. Natural fibers have protein (keratin) and cellulose, etc., which provide basic requirements such as moisture, oxygen, nutrients and temperature for bacterial growth and multiplication. This often leads to objectionable odour, dermal infection, product deterioration, allergic responses and other related diseases. This necessitates the development of clothing that could provide a desired antimicrobial effect. Nanotechnology is an emerging, highly interdisciplinary field based on the ability to manipulate structural materials on the level of individual atom and molecules. Nanostructures are capable of enhancing physical properties of conventional textiles in areas such as antimicrobial properties, water repellence, soil resistance, antistatic, anti infrared and flame retardant properties, dye ability, colour fastness and strength of textile materials. Studies have been carried out in the present work to fine-tune the silver nanoparticles for special applications. Silver nanoparticles were biosynthesized in laboratory using Bacillus strain. Silk fabric was impregnated with silver nanoparticles using microwave irradiation method. Microwave irradiation is emerging as a rapid and green method of heating for nanoparticle synthesis and impregnation. The antibacterial activity of the impregnated fabrics was determined against 7 different gram +ve and -ve bacterial strains. The results indicated that microwave impregnated silk fabric with silver nanoparticles had very good antibacterial activity (98.3% inhibition). Bactericidal properties of the functionalized fabric do not change after washing. Production of such materials is extremely fast, convenient, and cost-effective.

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Biosynthesis of Silver Nanoparticles and Its Applications

Cited by 197 publications

References 222 publications

Green Synthesis of Silver Nanoparticle from Photograph Wastewater Using Hylocereus Undatus Skin Extract

Green Synthesis of Silver Nanoparticle from Photograph Wastewater Using Hylocereus Undatus Skin Extract

A review on preparation methods of SNPs and their biomedical applications

Microwave Mediated Impregnation of Silver Nanoparticles on Silk Fabric for Hygienic Clothing

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