利用辣木叶片提取物生物合成银纳米颗粒及其抗菌活性。
Biofabrication of Ag nanoparticles using Moringa oleifera leaf extract and their antimicrobial activity.
作者信息
Prasad T N V K V, Elumalai E K
机构信息
Institute of Frontier Technology, Regional Agricultural Research Station, Acharya N.G. Ranga Agricultural University, Tirupati-517 502, (A.P.), India.
出版信息
Asian Pac J Trop Biomed. 2011 Dec;1(6):439-42. doi: 10.1016/S2221-1691(11)60096-8.
Abstract
OBJECTIVE
To formulate a simple rapid procedure for bioreduction of silver nanoparticles using aqueous leaves extract of Moringa oleifera (M. oleifera).
METHODS
10 mL of leaf extract was mixed to 90 mL of 1 mM aqueous of AgNO3 and was heated at 60 - 80 °C for 20 min. A change from brown to reddish color was observed. Characterization using UV-Vis spectrophotometry, Transmission Electron Microscopy (TEM) was performed.
RESULTS
TEM showed the formation of silver nanoparticles with an average size of 57 nm.
CONCLUSIONS
M. oleifera demonstrates strong potential for synthesis of silver nanoparticles by rapid reduction of silver ions (Ag(+) to Ag(0)). Biological methods are good competents for the chemical procedures, which are eco-friendly and convenient.
摘要
目的
制定一种使用辣木（Moringa oleifera）水提叶提取物对银纳米颗粒进行生物还原的简单快速方法。
方法
将10 mL叶提取物与90 mL 1 mM的硝酸银水溶液混合，并在60 - 80°C下加热20分钟。观察到颜色从棕色变为微红。使用紫外可见分光光度法、透射电子显微镜（TEM）进行表征。
结果
TEM显示形成了平均尺寸为57 nm的银纳米颗粒。
结论
辣木通过将银离子（Ag(+)还原为Ag(0)）快速合成银纳米颗粒具有很强的潜力。生物方法是化学方法的良好替代，具有生态友好和便捷的特点。
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