Sintesis biomimetik nanozarah perak menggunakan liken ramalina dumeticola dan aktiviti antibakteria

Translated title of the contribution: Biomimetic synthesis of silver nanoparticles using the lichen ramalina dumeticola and the antibacterial activity

Laily B. Din, Ropisah Mie, Mohd Wahid Samsudin, Azizan Ahmad, Nazlina Ibrahim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Silver nanoparticles (AgNPs) has been successfully synthesized by reduction of silver nitrate with an aqueous extract of the lichen Ramalina dumeticola. The aqueous extract of Ramalina dumeticola was treated with 45 mL of 1 mM silver nitrate at room temperature (24-25 °C) for 24 hours. The ultraviolet-visible (UV-Vis) absorption spectroscopy has been used to monitor the formation of AgNPs. Physical appearance of AgNPs characterized by transmission electron microscopy (TEM) showed formation of AgNPs with average particle size of 13 nm. X-ray diffraction (XRD) techniques displayed the AgNPs as cubic structure. The UV-Vis absorption spectroscopy results showed a strong resonance centered on the surface of AgNPs at approximately 433 nm. The in vitro antibacterial activity of the synthesized AgNPs was investigated against eight bacterial strains using a disc diffusion method and it’s showed inhibition against all of them. The results revealed that the above AgNPs have potential as antibacterial agent.

Original languageMalay
Pages (from-to)369-376
Number of pages8
JournalMalaysian Journal of Analytical Sciences
Volume19
Issue number2
Publication statusPublished - 2015

Fingerprint

Silver Nitrate
Biomimetics
Absorption spectroscopy
Silver
Nanoparticles
Particle size
Anti-Bacterial Agents
Transmission electron microscopy
X ray diffraction
Temperature
Lichens

Keywords

  • Antibacterial activity
  • Lichen extract
  • Ramalina dumeticola
  • Silver nanoparticles

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Sintesis biomimetik nanozarah perak menggunakan liken ramalina dumeticola dan aktiviti antibakteria. / Din, Laily B.; Mie, Ropisah; Samsudin, Mohd Wahid; Ahmad, Azizan; Ibrahim, Nazlina.

In: Malaysian Journal of Analytical Sciences, Vol. 19, No. 2, 2015, p. 369-376.

Research output: Contribution to journalArticle

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