T1 - A review on biosynthesis of nanoparticles using plant extract

Aqueous solution (1 mM) of silver nitrate (Sigma, MO, USA, 58157) was prepared in milli-Q water and used for synthesising silver nanoparticles. Seaweed extract (5 ml, 10%) was added to 45 ml of 1 mM silver nitrate for reduction in to Ag+ ions. The mixed solution was subjected to vigorous stirring for 3 h using a magnetic stirrer. The reaction mixtures were continuously monitored for its colour change from yellowish green to orange. This indicates the formation of silver particles and the products were tested.

Silver nanoparticles: green synthesis and antimicrobial applications

 Green synthesis of silver nanoparticles by Cestrum nocturnum(Night jasmine)

Biosynthesis of Nanoparticles by Microorganisms and …

Biosynthesized AgNPs from leaf extract of Vitex negundo L. proved to be an antitumor agent against human colon cancer cell line HCT15 (Prabhu et al. ). In vitro cytotoxicity effect was analyzed by AgNPs synthesized using Sesbania grandiflora leaf extract against human breast cancer (MCF-7) (Jeyaraj et al. ). The potential silver nanoparticles synthesized from calli extract of Citrullus colocynthis was investigated on human epidermoid larynx carcinoma cell line (Satyavani et al. ). Govender et al. , studied cytotoxic activity of Albizia adianthifolia (AA)-mediated silver nanoparticles and showed mechanistically the activation of AA AgNP in the intrinsic apoptotic pathway in A549 lung carcinoma cells.

Synthesis of nanoparticles by fungi - Wikipedia

However, very limited studies have been reported on the factors affecting or responsible for biosynthesis of metal nanoparticles. Synthesis of nanoparticles by using microorganisms has been developed over the last decades. It is known that the synthesis of nanoparticles using microorganisms is a quite slow process compared to physical and chemical approaches. Synthesis using microorganism is still on the laboratory scale. Efforts should be made to investigate the practical application of microorganism in nanoparticles production 47.

Antibacterial, anticancer and larvicidal activities of biosynthesized silver nanoparticles of seaweed, Turbinaria ornata
BIOSYNTHESIS OF NANOPARTICLES

A review on biosynthesis of nanoparticles by ..

Plant in Nanoparticles Synthesis: Plants offer a better option for synthesis of nanoparticle as the protocols involving plant sources are free from toxic chemicals; moreover, natural capping agents are readily supplied by the plants. Sastry et al., reported the synthesis of gold and silver nanoparticles using geranium extracts 21. Further, gold nanotriangles and silver nanoparticles were synthesized using Aloe Vera plant extracts 22. Most reports available on the synthesis of silver or gold nanoparticles use broths resulting from boiling fresh plant leaves.

26/08/2014 · Fungal biosynthesis of gold nanoparticles: mechanism and scale up

on the biosynthesis of silver nanoparticles using ..

According to Rai et al., 23 the silver nanoparticles is that they are known to have an antibacterial effect. However, the AgNPs formed during the Aloe vera hydrothermal method, AgNPs and Aloe vera, need to have bioactive functions. It is especially important to understand the functional effects on microorganisms in order to develop novel antibacterial agents. The silver ions from silver nanoparticles are believed to become attached to the negatively charged bacterial cell wall and rupture it, which leads to denaturation of protein and finally cell death 24. The antibacterial activities of normal and silver nanoparticle synthesized H. sinensis extract were carried out by agar well diffusion method.

This review is concerned with the synthesis of metallic nanoparticles using plant extracts

[53 x Biosynthesis of CdS nanoparticles in banana peel extract.

The biosynthetic method using plant extracts has received more attention thanchemical and physical methods and even the use of microbes. The method is suitablefor nanoscale metal synthesis due to the absence of any requirement to maintain anaseptic environment. Thepossibility of using plant materials for the synthesis of nanoscale metals wasreported initially by Gardea-Torresdey et al., Later, the bioreduction of various metals to nanosize materials ofvarious shapes, capable of meeting the requirements of diverse industrialapplications, was extensively studied. In continuation, we have demonstrated the prospect of usingVitex negundo L leaf and Callicarpa manigayistem-bark methanolic extracts for the synthesis of Ag-NPs in ambient conditions,without any additive protecting nanoparticles from aggregating, template shapingnanoparticles or accelerants.,