Calcined marine coral powders as a novel ecofriendly antimicrobial agent

Kambiz Sadeghi, Sarinthip Thanakkasaranee, I. Jong Lim, Jongchul Seo

Research output: Contribution to journalArticle

Abstract

In this study, natural waste of marine corals was calcined to prepare an antimicrobial agent. Energy-dispersive X-ray fluorescence spectroscopy showed that the major element and compound of calcined corals were Ca and CaO, respectively, while X-ray photoelectron spectroscopy revealed the occurrence of more than one oxygen species (O1s) on the surface of calcined corals, which was ascribed to the presence of MgO. Scanning electron microscopy imaging showed that calcined corals had a rough surface and an irregular shape, and the particle size distribution indicated that the average particle size of the calcined corals was 7.3 μm. The calcined corals exhibited large zones of inhibition against gram-positive (Staphylococcus aureus) and gram-negative (Escherichia coli) bacteria as well as a fungus (Penicillium sp.), in the antimicrobial tests using well diffusion method. Notably, as a membrane-active and species-specific agent, pronounced antimicrobial activity for calcined corals was observed against S. aureus. Our newly developed bioactive calcined corals could be the potential antimicrobial agents in medical, biological, and food packaging applications.

Original languageEnglish
Article number110193
JournalMaterials Science and Engineering C
Volume107
DOIs
Publication statusPublished - 2020 Feb

Fingerprint

Antimicrobial agents
Anti-Infective Agents
Powders
staphylococcus
fungi
Escherichia
activity (biology)
Fungi
particle size distribution
food
packaging
Particle size analysis
Escherichia coli
bacteria
Bacteria
Packaging
x rays
X ray photoelectron spectroscopy
Particle size
photoelectron spectroscopy

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Sadeghi, Kambiz ; Thanakkasaranee, Sarinthip ; Lim, I. Jong ; Seo, Jongchul. / Calcined marine coral powders as a novel ecofriendly antimicrobial agent. In: Materials Science and Engineering C. 2020 ; Vol. 107.
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Calcined marine coral powders as a novel ecofriendly antimicrobial agent. / Sadeghi, Kambiz; Thanakkasaranee, Sarinthip; Lim, I. Jong; Seo, Jongchul.

In: Materials Science and Engineering C, Vol. 107, 110193, 02.2020.

Research output: Contribution to journalArticle

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