Abstract Title:

Antimicrobial activity of commercial Olea europaea (olive) leaf extract.

Abstract Source:

Front Neurol Neurosci. 2010;28:107-12. Epub 2010 Mar 26. PMID: 19135874

Abstract Author(s):

Aurelia N Sudjana, Carla D'Orazio, Vanessa Ryan, Nooshin Rasool, Justin Ng, Nabilah Islam, Thomas V Riley, Katherine A Hammer

Abstract:

The aim of this research was to investigate the activity of a commercial extract derived from the leaves of Olea europaea (olive) against a wide range of microorganisms (n=122). Using agar dilution and broth microdilution techniques, olive leaf extract was found to be most active against Campylobacter jejuni, Helicobacter pylori and Staphylococcus aureus [including meticillin-resistant S. aureus (MRSA)], with minimum inhibitory concentrations (MICs) as low as 0.31-0.78% (v/v). In contrast, the extract showed little activity against all other test organisms (n=79), with MICs for most ranging from 6.25% to 50% (v/v). In conclusion, olive leaf extract was not broad-spectrum in action, showing appreciable activity only against H. pylori, C. jejuni, S. aureus and MRSA. Given this specific activity, olive leaf extract may have a role in regulating the composition of the gastric flora by selectively reducing levels of H. pylori and C. jejuni.

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