Biosynthesis of colloidal silver nanoparticles: Their characterization and potential antibacterial activity

被引：34

作者：

Shivananda, Chikkapura Shekarappa ^{[1
]}

Asha, Sangappa ^{[1
]}

Madhukumar, Rajappa ^{[1
]}

Satish, Sreedharamurthy ^{[2
]}

Narayana, Badiadka ^{[3
]}

Byrappa, Kullaiah ^{[4
]}

Wang, Youjiang ^{[5
]}

Sangappa, Yallappa ^{[1
,5
]}

机构：

[1] Mangalore Univ, Dept Studies Phys, Mangalore 574199, Karnataka, India

[2] Univ Mysore, Dept Microbiol, Mysore 570006, Karnataka, India

[3] Mangalore Univ, Dept Studies Chem, Mangalore 574199, Karnataka, India

[4] Mangalore Univ, Dept Mat Sci, Mangalore 574199, Karnataka, India

[5] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

来源：

MACROMOLECULAR RESEARCH | 2016年 / 24卷 / 08期

关键词：

silk fibroin; silver nanoparticles; UV-visible; XRD; TEM; antibacterial activity; GREEN SYNTHESIS; SILK FIBROIN; ANTIMICROBIAL ACTIVITIES; GOLD; TEMPERATURE; HYDROGELS; SUPPORTS; EXTRACT; GROWTH; FILMS;

D O I：

10.1007/s13233-016-4086-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The colloidal silver nanoparticles (AgNPs) were synthesized in situ under white light at room temperature using aqueous silk fibroin (SF) obtained from Bombyxmori silk. The UV-visible spectroscopy revealed the formation of AgNPs by showing a typical surface Plasmon resonance (SPR) band at 422 nm from the UV-visible spectra. The transmission electron microscope (TEM) images show that the formed nanoparticles were spherical in shape with smooth surfaces. The particle diameter was around 35-40 nm. Further the X-ray diffraction (XRD) analysis confirms the nanocrystalline phase of silver with face centered cubic (FCC) crystal structure. The biogenic silver nanoparticles exhibited significant antibacterial activity against human bacterial pathogens Bacillus subtilis, Staphylococcus aureus, Salmonella typhi and Escherichia coli.

引用

页码：684 / 690

页数：7

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