Chitosan-based synthesis of magnetically-driven nanocomposites with biogenic magnetite core, controlled silver size, and high antimicrobial activity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F12%3A33140852" target="_blank" >RIV/61989592:15310/12:33140852 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15110/12:33140852

Výsledek na webu

<a href="http://dx.doi.org/10.1039/C2GC35545K" target="_blank" >http://dx.doi.org/10.1039/C2GC35545K</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/C2GC35545K" target="_blank" >10.1039/C2GC35545K</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Chitosan-based synthesis of magnetically-driven nanocomposites with biogenic magnetite core, controlled silver size, and high antimicrobial activity

Popis výsledku v původním jazyce

We report a new procedure, exploiting "green" chemistry, resulting in biocompatible magnetically-driven nanocomposites with high antibacterial and antifungal activities against ten tested bacterial strains and four Candida species. The nanocomposites consist of silver nanoparticles (NPs), biogenic magnetite NPs isolated from magnetotactic bacteria, and an environmentally friendly polymer - chitosan. These hybrids were prepared using an acidified chitosan suspension to cover biogenic magnetite NPs by a cross-linking method, followed by employing the NH2 groups of chitosan for the reduction of silver salt in an alkaline medium. Thus, in the procedure, chitosan acts as (i) a biocompatible matrix surrounding the magnetite NPs, (ii) a reducing agent for thesilver ions, and (iii) a linker between magnetic and silver NPs. The size of the resulting silver NPs and the total amount of silver involved in the nanocomposites can be simply controlled by the initial concentration of the silver salt

Název v anglickém jazyce

Chitosan-based synthesis of magnetically-driven nanocomposites with biogenic magnetite core, controlled silver size, and high antimicrobial activity

Popis výsledku anglicky

We report a new procedure, exploiting "green" chemistry, resulting in biocompatible magnetically-driven nanocomposites with high antibacterial and antifungal activities against ten tested bacterial strains and four Candida species. The nanocomposites consist of silver nanoparticles (NPs), biogenic magnetite NPs isolated from magnetotactic bacteria, and an environmentally friendly polymer - chitosan. These hybrids were prepared using an acidified chitosan suspension to cover biogenic magnetite NPs by a cross-linking method, followed by employing the NH2 groups of chitosan for the reduction of silver salt in an alkaline medium. Thus, in the procedure, chitosan acts as (i) a biocompatible matrix surrounding the magnetite NPs, (ii) a reducing agent for thesilver ions, and (iii) a linker between magnetic and silver NPs. The size of the resulting silver NPs and the total amount of silver involved in the nanocomposites can be simply controlled by the initial concentration of the silver salt

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JM - Inženýrské stavitelství

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Green Chemistry

ISSN

1463-9262

e-ISSN

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Svazek periodika

14

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

2550-2558

Kód UT WoS článku

000307785100027

EID výsledku v databázi Scopus

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