نتایج جستجو برای: extract nanoparticles
تعداد نتایج: 280956 فیلتر نتایج به سال:
Plant extracts are very cost effective and eco-friendly and thus can be used as an economic and efficient alternative for the large-scale synthesis of nanoparticles. We report on the use of ginger extract for the biosynthesis of silver nanoparticles. Bioactive silver nanoparticle synthesis was byreacting the ginger extract with aqueous silver nitrate solution at room temperature (27±2 C) and at...
Gold nanoparticles were synthesized using a water extract of Artemisia capillaris (AC-AuNPs) under different extract concentrations, and their catalytic activity was evaluated in a 4-nitrophenol reduction reaction in the presence of sodium borohydride. The AC-AuNPs showed violet or wine colors with characteristic surface plasmon resonance bands at 534~543 nm that were dependent on the extract c...
BACKGROUND There is an increasing commercial demand for nanoparticles due to their wide applicability in various markets, including medicine, catalysis, electronics, chemistry, and energy. In this report, a simple and ecofriendly chemical reaction for the synthesis of gold and silver nanoparticles from Trianthema decandra (Aizoaceae) has been developed. METHODS AND RESULTS On treatment of aqu...
Background and purpose: This study aimed at investigating the antibacterial effects of nanoparticles synthesized with ethanol extract of Rosa damascena and Juglans regia (walnut leaves) against methicillin-resistant Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli, and Acinetobacter baumannii. Materials and methods: In this experimental study, gold nanoparticles were synthesized...
In this project, total phenolic and flavonoid contents of the aqueous extract of Laurus nobilis L. leaves were evaluated by colorimetric methods. These natural products which are found in plants extracts, can be considered as reducing and stabilizing agents in the synthesis of metal nanoparticles. Regarding to high amounts of these compounds in the extract, silver nanoparticles were synthesized...
Background: Diabetes is a metabolic disorder with chemical, physiological and pathological changes in the liver. Due to the side effects of insulin, the use of herbal medicines such as Nigella sativa with flavonoid compounds and antioxidant properties is considered. In this study, the effect of magnetic hydroethanolic extract of Nigella sativa and MgO nanoparticles separately and simultaneously...
BACKGROUND Pseudomonas aeruginosa infection is a leading cause of morbidity and mortality in burn and immune-compromised patients. In recent studies, researchers have drawn their attention towards ecofriendly synthesis of nanoparticles and their activity against multidrug resistant microbes. In this study, silver nanoparticles were synthesized from aqueous extract of Phyllanthus amarus. The syn...
Objective: To synthesize silver nanoparticles from two medicinally important plant seed extracts of Cyperus esculentus and Butyrospermum paradoxum for the first time and to check the potency of the crude methanolic extracts and their synthesized nanoparticles on ten different human pathogens. The percentage yields of two seed extracts were 15.10% and 18.08% respectively and subjected to phytoch...
Nowadays, green synthesis of metal nanoparticles has become a promising synthetic strategy in nanotechnology and materials sciences. In this research, biosynthesis of silver nanoparticles (AgNPs) was successfully accomplished in the presence of Prosopis farcta fruit extract as a reducing agent. Proceeding of the reaction was assessed by using UV–vis spectroscopy. Characterization of silver nano...
Recently, the synthesis of silver nanoparticles has become an important subject in the bionanotechnology field. Many different chemical and physical methods could be used for silver nanoparticles synthesis, but they are limited due to the usage of toxic chemicals and the production of dangerous by-products. However, the usage of plant extract for silver nanoparticles synthesis is a green single...
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