Silver nanoparticles encapsulated in glycogen biopolymer Morphology, optical and antimicrobial properties

被引：44

作者：

Bozanic, D. K. ^{[1
]}

Dimitrijevic-Brankovic, S. ^{[2
]}

Bibic, N. ^{[1
]}

Luyt, A. S. ^{[3
]}

Djokovic, V. ^{[1
]}

机构：

[1] Univ Belgrade, Vinca Inst Nucl Sci, Belgrade 11001, Serbia

[2] Univ Belgrade, Fac Technol & Met, Dept Bioengn & Biotechnol, Belgrade 11120, Serbia

[3] Univ Free State Qwaqwa Campus, Dept Chem, ZA-9866 Phuthaditjhaba, South Africa

来源：

CARBOHYDRATE POLYMERS | 2011年 / 83卷 / 02期

关键词：

Silver nanoparticles; Glycogen; Biopolymer nanocomposites; Antimicrobial activity; GREEN SYNTHESIS; ANTIBACTERIAL ACTIVITY; GOLD NANOPARTICLES; PLASMON RESONANCE; AU NANOPARTICLES; NANOCOMPOSITES; STABILIZATION; FABRICATION; PARTICLES; CHITOSAN;

D O I：

10.1016/j.carbpol.2010.08.070

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The glycogen biopolymer from the bovine liver has been used as stabilization agent for the growth of silver nanoparticles The samples with various contents of silver were prepared by two different procedures that include fast (using microwave radiation) and slow (conventional) heating of the reaction mixtures The TEM images of the two nanocomposites showed the presence of nanoparticles with average diameter of 9 7 and 10 4 nm respectively The results also revealed that the optical properties of the obtained nanocomposite samples strongly depend on the method of preparation The samples prepared using microwave radiation exhibited narrower surface plasmon resonance peaks while the silver nanoparticles induced quenching of the photoluminescence of glycogen in all of the tested samples Antimicrobial activity tests were carried out against Staphylococcus aureus Escherichia coli and Candida albicans pathogens and showed that the microbial growth was gradually reduced as the concentration of the silver increased Also after 2 h of exposure to the nanocomposites the number of cells was significantly reduced (>99%) for all the strains tested (C) 2010 Elsevier Ltd All rights reserved

引用

页码：883 / 890

页数：8

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