Properties of basil and lavender essential oils adsorbed on the surface of hydroxyapatite

Daniela Predoi, Andreea Groza, Simona Liliana Iconaru, Gabriel Predoi, Florica Barbuceanu, Regis Guegan, Mikael Stefan Motelica-Heino, Carmen Cimpeanu

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7 Citations (Scopus)

Abstract

The research conducted in this study presented for the first time results of physico-chemical properties and in vitro antimicrobial activity of hydroxyapatite plant essential oil against Gram-positive bacteria (methicillin-resistant Staphylococcus aureus (MRSA) and S. aureus 0364) and Gram-negative bacteria (Escherichia coli ATCC 25922). The samples were studied by scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) spectroscopy to determine the morphology and structure of the nanocomposites of hydroxyapatite coated with basil (HAp-B) and lavender (HAp-L) essential oils (EOs). The values of the BET specific surface area (SBET), total pore volume (VP) and pore size (DP) were determined. The results for the physico-chemical properties of HAp-L and HAp-B revealed that lavender EOs were well adsorbed on the surface of hydroxyapatite, whereas basil EOs showed a poor adsorption on the surface of hydroxyapatite. We found that the lavender EOs hydroxyapatite (HAp-L) exhibited a very good inhibitory growth activity. The value of the minimum inhibitory concentration (MIC) related to growth bacteria was 0.039 mg/mL for MRSA, 0.02 mg/mL for S. aureus and 0.039 mg/mL E. coli ATCC 25922. The basil EO hydroxyapatite (HAp-B) showed poor inhibition of bacterial cell growth. The MIC value was 0.625 mg/mL for the HAp-B sample in the presence of the MRSA bacteria, 0.313 mg/mL in the presence of S. aureus and 0.078 mg/mL for E. coli ATCC 25922.

Original languageEnglish
Article number652
JournalMaterials
Volume11
Issue number5
DOIs
Publication statusPublished - 2018 Apr 24

Keywords

  • Gram negative bacteria
  • Gram positive bacteria
  • Hydroxyapatite
  • Plant essential oil

ASJC Scopus subject areas

  • Materials Science(all)

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    Predoi, D., Groza, A., Iconaru, S. L., Predoi, G., Barbuceanu, F., Guegan, R., Motelica-Heino, M. S., & Cimpeanu, C. (2018). Properties of basil and lavender essential oils adsorbed on the surface of hydroxyapatite. Materials, 11(5), [652]. https://doi.org/10.3390/ma11050652