Synthesis and characterisation of silver nanoparticles using leaf extract of Artemisia afra and their in vitro antimicrobial and antioxidant activities

被引：23

作者：

Elemike, Elias E. ^{[1
,2
,3
]}

Onwudiwe, Damian C. ^{[1
,2
]}

Ekennia, Anthony C. ^{[4
]}

Jordaan, Anine ^{[5
]}

机构：

[1] North West Univ, Fac Agr Sci & Technol, Mat Sci Innovat & Modelling MaSIM Res Focus Area, Mafikeng Campus,Private Bag X2046, ZA-2735 Mmabatho, South Africa

[2] North West Univ, Sch Math & Phys Sci, Dept Chem, Fac Agr Sci & Technol, Mafikeng Campus,Private Bag X2046, ZA-2735 Mmabatho, South Africa

[3] Fed Univ Petr Resources, Dept Chem, Coll Sci, PMB 1221, Effurun, Delta State, Nigeria

[4] Fed Univ Ndufu Alike Ikwo, Dept Chem, PMB 1010, Abakaliki, Ebonyi State, Nigeria

[5] North West Univ, Lab Electron Microscopy, CRB Res Focus Area, Private Bag X6001, ZA-2520 Potchefstroom, South Africa

来源：

IET NANOBIOTECHNOLOGY | 2018年 / 12卷 / 06期

关键词：

silver; transmission electron microscopy; ultraviolet spectra; visible spectra; surface plasmon resonance; antibacterial activity; X-ray diffraction; microorganisms; nanoparticles; nanofabrication; Fourier transform infrared spectra; silver nanoparticles; reaction temperature; face-centred cubic nanoparticles; antioxidant properties; silver ion conversion; aqueous leaf extract; carboxylate ion group; antimicrobial properties; Artemisia afra; spherical nanoparticles; TEM; XRD; FTIR spectra; Ag; temperature 80 degC to 90 degC; time; 30; 0; min; free radical scavenging; esters; phenolics; terpenoids; flavonoids; carbonyl ion group; METAL NANOPARTICLES; ALLOY NANOPARTICLES; MEDIATED SYNTHESIS; GREEN SYNTHESIS; PLANT-EXTRACT; FRUIT EXTRACT; ANTIBACTERIAL; GOLD; BIOSYNTHESIS; CAPACITY;

D O I：

10.1049/iet-nbt.2017.0297

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

In this study, the conversion of silver ions into approximate to 30.74nm sized silver nanoparticles (AgNPs) was achieved in 30min at a reaction temperature of 80-90 degrees C in aqueous leaf extract of Artemisia afra. The synthesised AgNPs showed surface plasmon resonance in the range of 423-438nm. Spherical and face-centred cubic nanoparticles were confirmed by transmission electron microscope (TEM) and X-ray diffraction (XRD) analysis, respectively. Fourier transform infra-red (FTIR) results indicated that the obtained nanoparticles were stabilised and capped through the carbonyl and carboxylate ion groups possibly from flavonoids, terpenoids, phenolics and esters content of the extracts. In addition, the AgNPs were assessed for their biological potentials against some microbes and, also, their free radical scavenging ability was established. The AgNPs exhibited interesting antimicrobial and antioxidant properties better than the aqueous extract of A. afra.

引用

页码：722 / 726

页数：5

共 40 条

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