Article Publish Status: FREE
Abstract Title:

Antimicrobial Activity of Chamomile Essential Oil: Effect of Different Formulations.

Abstract Source:

Molecules. 2019 Nov 26 ;24(23). Epub 2019 Nov 26. PMID: 31779245

Abstract Author(s):

Sourav Das, Barbara Horváth, Silvija Šafranko, Stela Jokić, Aleksandar Széchenyi, Tamás Kőszegi

Article Affiliation:

Sourav Das


Essential oils (EOs) are highly lipophilic, which makes the measurement of their biological action difficult in an aqueous environment. We formulated a Pickering nanoemulsion of chamomile EO (C). Surface-modified Stöber silica nanoparticles (20 nm) were prepared and used as a stabilizing agent of CThe antimicrobial activity of Cwas compared with that of emulsion stabilized with Tween 80 (C) and ethanolic solution (C). The antimicrobial effects were assessed by their minimum inhibitory concentration (MIC) and minimum effective (MEC) concentrations. Besides growth inhibition (CFU/mL), the metabolic activity and viability of Gram-positive and Gram-negative bacteria as well asspecies, in addition to the generation of oxygen free radical species (ROS), were studied. We followed the killing activity of Cand analyzed the efficiency of the EO delivery for examined formulations by using unilamellar liposomes as a cellular model. Cshowed significantly higher antibacterial and antifungal activities than Cand C. Chamomile EOs generated superoxide anion and peroxide related oxidative stress which might be the major mode of action of Ch essential oil. We could also demonstrate that Cwas the most effective in donation of the active EO components when compared with Cand C. Our data suggest that Cformulation is useful in the fight against microbial infections.

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