Antibacterial activity of α-terpineol may induce morphostructural alterations in Escherichia coli

Brazilian Journal of Microbiology : [publication of the Brazilian Society for Microbiology]
Li LiZhengwen Li

Abstract

The antibacterial effect of α-terpineol from Cinnamomum longepaniculatum (Gamble) N. Chao leaf essential oils were studied with special reference to the mechanism of inhibiting the standard strain of Escherichia coli (CMCC (B) 44102) growth at ultrastructural level. Minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC) and time-kill curves of α-terpineol were determined; Escherichia coli was treated with α-terpineol and observed under a transmission electron microscope. The MIC and MBC values of α-terpineol were all 0.78 μL/mL, and time-kill curves showed the concentration-dependent. Under the transmission electron microscopy (TEM), Escherichia coli exposed to MIC levels of α-terpineol exhibited decreased cell size and irregular cell shape, cell wall and cell membrane were ruptured, nucleus cytoplasm was reduced and nuclear area gathered aside. Results suggest that α-terpineol has excellent antibacterial activity and could induce morphological changes of Escherichia coli.

Citations

May 18, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Mariana de BarrosMaria Aparecida Scatamburlo Moreira
Apr 20, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Hossein Mirzaei-NajafgholiParissa Taheri
Jun 26, 2020·Journal of Periodontal Research·Any Carolina Cardoso Guimarães VasconcelosAldeídia Pereira de Oliveira
Nov 15, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Xin-Sheng LiuLu Han
Jul 6, 2020·Journal of Ethnopharmacology·Vineet Kumar RaiNarayan Prasad Yadav
Aug 28, 2021·Foods·Khabat Noori HusseinLászló Friedrich

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