Lantana camara berry for the synthesis of silver nanoparticles  

作　　者：Brajesh Kumar Kumari Smita Luis Cumbal Alexis Debut 

机构地区：[1]Centro de Nanociencia y Nanotecnologia,Universidad de las Fuerzas Armadas-ESPE.Av.Gral.Ruminahui s/n

出　　处：《Asian Pacific Journal of Tropical Biomedicine》2015年第3期192-195,共4页亚太热带生物医学杂志（英文版）

基　　金：Supported by the Prometeo Project of the National Secretary of Higher Education.Science.Technology and Innovation,Ecuador

摘　　要：Objective:To synthesize the silver nunoparticles(AgNPs) by reduction of silver ions into nano silver,using ripened berry extract of Lantana camara and evaluate its antioxidant activity against 1.1-diphenyl-2- picrylhydrazyl.Methods:The prepared AgNPs were characterized by visual,UV-visible spectrophotometer.dynamic light scattering and transmission electron microscopy with selected area electron diffraction.Results:Transmission electron microscopy and dynamic light scattering analysis confirmed the AgNPs are spherical and 75.2 nm average sized.Selected area electron diffraction analysis supports that the obtained nanoparticles were in crystalline form.In addition,the antioxidant efficacy of prepared AgNPs was found to be higher than berry extract against 1.1-diphenyl-2-picrylhydrazyl.Conclusions:From the results obtained it is suggested that surface modified AgNPs at lower concentration,showed higher antioxidant activity than berry extract against 1,1-diphenyl-2-picrylhydrazyl and could be used effectively in future ethno pharmacological concerns.Objective:To synthesize the silver nunoparticles(AgNPs) by reduction of silver ions into nano silver,using ripened berry extract of Lantana camara and evaluate its antioxidant activity against 1.1-diphenyl-2- picrylhydrazyl.Methods:The prepared AgNPs were characterized by visual,UV-visible spectrophotometer.dynamic light scattering and transmission electron microscopy with selected area electron diffraction.Results:Transmission electron microscopy and dynamic light scattering analysis confirmed the AgNPs are spherical and 75.2 nm average sized.Selected area electron diffraction analysis supports that the obtained nanoparticles were in crystalline form.In addition,the antioxidant efficacy of prepared AgNPs was found to be higher than berry extract against 1.1-diphenyl-2-picrylhydrazyl.Conclusions:From the results obtained it is suggested that surface modified AgNPs at lower concentration,showed higher antioxidant activity than berry extract against 1,1-diphenyl-2-picrylhydrazyl and could be used effectively in future ethno pharmacological concerns.

关 键 词：Green synthesis LANTANA camara SILVER nanoparticles Transmission electron MICROSCOPY DPPH· 

分 类 号：R284.3[医药卫生—中药学]