Synthesis of cysteine capped silver nanoparticles by electrochemically active biofilm and their antibacterial activities

Mohammad Mansoob Khan; Shafeer Kalathil; Jintae Lee; Moo Hwan Cho

doi:10.5012/bkcs.2012.33.8.2592

Synthesis of cysteine capped silver nanoparticles by electrochemically active biofilm and their antibacterial activities

Mohammad Mansoob Khan^*, Shafeer Kalathil, Jintae Lee, Moo Hwan Cho

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

91 Citations (Scopus)

Abstract

Cysteine capped silver nanoparticles (Cys-AgNPs) have been synthesized by employing electrochemically active biofilm (EAB), AgNO ₃ as precursor and sodium acetate as electron donor in aqueous solution at 30 °C. Cys-AgNPs of 5-10 nm were synthesized and characterized by UV-Vis, FT-IR, XRD and TEM. Capping of the silver nanoparticles with cysteine provides stability to nanoparticles by a thiolate bond between the amino acid and the nanoparticle surface and hydrogen bonding among the Cys-AgNPs. In addition, the antibacterial effects of as-synthesized Cys-AgNPs have been tested against two pathogenic bacteria Escherichia coli (O157:H7) and Pseudomonas aeruginosa (PAO1). The results demonstrate that the as-synthesized Cys-AgNPs can proficiently inhibit the growth and multiplication of E. coli and P. aeruginosa.

Original language	English
Pages (from-to)	2592-2596
Number of pages	5
Journal	Bulletin of the Korean Chemical Society
Volume	33
Issue number	8
DOIs	https://doi.org/10.5012/bkcs.2012.33.8.2592
Publication status	Published - 20 Aug 2012
Externally published	Yes

Keywords

(L)-Cysteine
Cys-AgNPs
Electrochemically active biofilm (EAB)
Hydrogen bonding
Silver colloidal nanoparticles

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10.5012/bkcs.2012.33.8.2592

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title = "Synthesis of cysteine capped silver nanoparticles by electrochemically active biofilm and their antibacterial activities",

abstract = "Cysteine capped silver nanoparticles (Cys-AgNPs) have been synthesized by employing electrochemically active biofilm (EAB), AgNO 3 as precursor and sodium acetate as electron donor in aqueous solution at 30 °C. Cys-AgNPs of 5-10 nm were synthesized and characterized by UV-Vis, FT-IR, XRD and TEM. Capping of the silver nanoparticles with cysteine provides stability to nanoparticles by a thiolate bond between the amino acid and the nanoparticle surface and hydrogen bonding among the Cys-AgNPs. In addition, the antibacterial effects of as-synthesized Cys-AgNPs have been tested against two pathogenic bacteria Escherichia coli (O157:H7) and Pseudomonas aeruginosa (PAO1). The results demonstrate that the as-synthesized Cys-AgNPs can proficiently inhibit the growth and multiplication of E. coli and P. aeruginosa.",

keywords = "(L)-Cysteine, Cys-AgNPs, Electrochemically active biofilm (EAB), Hydrogen bonding, Silver colloidal nanoparticles",

author = "Khan, {Mohammad Mansoob} and Shafeer Kalathil and Jintae Lee and Cho, {Moo Hwan}",

year = "2012",

month = aug,

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doi = "10.5012/bkcs.2012.33.8.2592",

language = "English",

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journal = "Bulletin of the Korean Chemical Society",

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TY - JOUR

T1 - Synthesis of cysteine capped silver nanoparticles by electrochemically active biofilm and their antibacterial activities

AU - Khan, Mohammad Mansoob

AU - Kalathil, Shafeer

AU - Lee, Jintae

AU - Cho, Moo Hwan

PY - 2012/8/20

Y1 - 2012/8/20

N2 - Cysteine capped silver nanoparticles (Cys-AgNPs) have been synthesized by employing electrochemically active biofilm (EAB), AgNO 3 as precursor and sodium acetate as electron donor in aqueous solution at 30 °C. Cys-AgNPs of 5-10 nm were synthesized and characterized by UV-Vis, FT-IR, XRD and TEM. Capping of the silver nanoparticles with cysteine provides stability to nanoparticles by a thiolate bond between the amino acid and the nanoparticle surface and hydrogen bonding among the Cys-AgNPs. In addition, the antibacterial effects of as-synthesized Cys-AgNPs have been tested against two pathogenic bacteria Escherichia coli (O157:H7) and Pseudomonas aeruginosa (PAO1). The results demonstrate that the as-synthesized Cys-AgNPs can proficiently inhibit the growth and multiplication of E. coli and P. aeruginosa.

AB - Cysteine capped silver nanoparticles (Cys-AgNPs) have been synthesized by employing electrochemically active biofilm (EAB), AgNO 3 as precursor and sodium acetate as electron donor in aqueous solution at 30 °C. Cys-AgNPs of 5-10 nm were synthesized and characterized by UV-Vis, FT-IR, XRD and TEM. Capping of the silver nanoparticles with cysteine provides stability to nanoparticles by a thiolate bond between the amino acid and the nanoparticle surface and hydrogen bonding among the Cys-AgNPs. In addition, the antibacterial effects of as-synthesized Cys-AgNPs have been tested against two pathogenic bacteria Escherichia coli (O157:H7) and Pseudomonas aeruginosa (PAO1). The results demonstrate that the as-synthesized Cys-AgNPs can proficiently inhibit the growth and multiplication of E. coli and P. aeruginosa.

KW - (L)-Cysteine

KW - Cys-AgNPs

KW - Electrochemically active biofilm (EAB)

KW - Hydrogen bonding

KW - Silver colloidal nanoparticles

U2 - 10.5012/bkcs.2012.33.8.2592

DO - 10.5012/bkcs.2012.33.8.2592

M3 - Article

AN - SCOPUS:84865213026

SN - 0253-2964

VL - 33

SP - 2592

EP - 2596

JO - Bulletin of the Korean Chemical Society

JF - Bulletin of the Korean Chemical Society

IS - 8

ER -

Synthesis of cysteine capped silver nanoparticles by electrochemically active biofilm and their antibacterial activities

Abstract

Keywords

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