Effect of sonication and aging on the templating attribute of starch for "green" silver nanoparticles and their interactions at bio-interface

被引：37

作者：

Konwarh, Rocktotpal ^{[1
]}

Karak, Niranjan ^{[1
]}

Sawian, Clara Ermine ^{[2
]}

Baruah, Shashi ^{[2
]}

Mandal, Manabendra ^{[2
]}

机构：

[1] Tezpur Univ, Dept Chem Sci, Adv Polymer & Nanomat Lab, Sonitpur 784028, Assam, India

[2] Tezpur Univ, Dept Mol Biol & Biotechnol, Sonitpur 784028, Assam, India

来源：

CARBOHYDRATE POLYMERS | 2011年 / 83卷 / 03期

关键词：

Starch template; Silver nanoparticles; Sonication; Response surface methodology; Phytotoxicity; Anti-microbial; ANTIMICROBIAL ACTIVITIES; PARTICLES; MATRIX; CELLS;

D O I：

10.1016/j.carbpol.2010.09.031

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The present work reports the exploitation of starch as a macromolecular matrix in the domain of 'green' bio-nanotechnology. The differential templating attributes of starch under ambient aging and sonication for biomimetically generated silver nanoparticles were investigated. Morphology-directing action of the starch-bioreductant (i.e., Mesua ferrea Linn. leaf aqueous extract, adjusted to basic pH) complex resulted in a branched silver structure (similar to 440 nm, along the long axis with branch average diameter of 11.5 nm) upon aging for 24 days. Starch assisted spherical silver nanoparticles (average diameter. 5.4 nm) were obtained under sonication parameters of 3 min, 0.5 cycles at 60% amplitude, optimized through response surface methodology. Evaluation of phytotoxicity on Cucumis sativus, compromise on amplification of a 263 base pair mammalian DNA sequence in polymerase chain reaction (PCR) and anti-microbial potency demonstrated differential action of the carbohydrate templated aged and sonicated silver nanoparticles at the bio-interface. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1245 / 1252

页数：8

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