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Article Publish Status: FREE
Abstract Title:

The Anti-Staphylococcal Potential of Ethanolic Polish Propolis Extracts.

Abstract Source:

Molecules. 2019 May 3 ;24(9). Epub 2019 May 3. PMID: 31058881

Abstract Author(s):

Katarzyna Grecka, Piotr M Kuś, Piotr Okińczyc, Randy W Worobo, Justyna Walkusz, Piotr Szweda

Article Affiliation:

Katarzyna Grecka

Abstract:

The principal objective of this study was to determine the anti-staphylococcal potential of ethanol extracts of propolis (EEPs). A total of 20 samples of propolis collected from apiaries located in different regions of Poland were used in the study. The two-fold broth microdilution method revealed some important differences in the antimicrobial activity of investigated EEPs. Up to the concentration of 4096µg/mL no activity was observed against Gram-negative bacteria (and). Staphylococci exhibited much higher susceptibility. The highest efficiency observed for EEP12 and EEP20 (MIC values ranged between 32 and 256µg/mL). However, the achievement of bactericidal effect usually required higher concentrations. In the case of clinical isolates ofMBC values for EEP12 and EEP20 ranged from 512 to 1024µg/mL. The HPLC analysis revealed that these two products contained a higher concentration of flavonoids (flavonols, flavones, and flavanones) compared to other investigated EEPs. In checkerboard test, a synergistic anti-staphylococcal effect was observed for the action of EEP20 in combination withamikacin, kanamycin, gentamycin, tetracycline, and fusidic acid (all these antibiotics inhibit protein synthesis). Moreover, the investigated EEPs effectively eradicated staphylococcal biofilm. The obtained results clearly confirm the high anti-staphylococcal potential of propolis harvested in Polish apiaries.

Study Type : In Vitro Study

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