Synthesis of silver nanoparticles using medicinal Zizyphus xylopyrus bark extract

Abstract

In the present paper, biosynthesis of silver nanoparticles using Zizyphus xylopyrus bark extract is reported. Z. xylopyrus bark extract is efficiently used for the biosynthesis of silver nanoparticles. UV-Visible spectroscopy showed surface plasmon resonance peaks in the range 413-420 nm confirming the formation of silver nanoparticles. Different factors affecting the synthesis of silver nanoparticles like methodology for the preparation of extract, concentration of silver nitrate solution used for biosynthesis and initial pH of the reaction mixture were studied. The extract prepared with 10 mM AgNO 3 solution by reflux extraction method at optimum initial pH of 11, resulted in higher conversion of silver ions to silver nanoparticles as compared with those prepared by open heating or ultrasonication. SEM analysis showed that the biosynthesized nanoparticles are spherical in nature and ranged from 60 to 70 nm in size. EDX suggested that the silver nanoparticles must be capped by the organic components present in the plant extract. This simple process for the biosynthesis of silver nanoparticles using aqueous extract of Z. xylopyrus is a green technology without the usage of hazardous and toxic solvents and chemicals and hence is environment friendly. The process has several advantages with reference to cost, compatibility for its application in medical and drug delivery, as well as for large-scale commercial production.

Phyto-fabrication, characteristics and anticandidal effects of silver nanoparticles from leaves of ziziphus mauritiana lam

“…The highest UV-visible peak is 445 nm at absorption 0.925 that confirms the for- mation of silver nanoparticles due to excitation of surface plasmon vibrations in silver nanoparticles. These results of color and UV-Vis spectrum agree with many recent studies for biosynthesis of AgNPs from plants and fungi extracts 9,20 .…”

“…and tested against some human pathogenic bacteria [8][9][10] . While Divband et al 11 used the produced nanoparticles from Z. spina christi fly ash to remove Lead (Pb…”

A novel approach for the biosynthesis of silver oxide nanoparticles using aqueous leaf extract ofCallistemon lanceolatus(Myrtaceae) and their therapeutic potential

“…The pellet was washed thrice using deionised water to completely remove unwanted surface impurities from the nanoparticles. The pellets were dried on a Petri dish in a hot air oven at 60 C. [39,49] After drying completely, the powder was scraped off to yield silver oxide nanoparticles. These were stored in Eppendorf tubes at room temperature for further usage and analysis.…”

Electrospun PCL membranes incorporated with biosynthesized silver nanoparticles as antibacterial wound dressings

“…Biosynthesized nanoparticles are more acceptable in medical applications due to more biocompatibility than chemically synthesized ones (Sundaram et al 2012). Previous reports suggested that the silver nanoparticles synthesized using medicinal plant extracts were capped by the organic components present in the plant extract (Maria et al 2014;Sasikala et al 2014). This will further enhance the therapeutic potential of these nanoparticles.…”