1 research outputs found
In Vitro Efficacy of Essential Oils from Melaleuca Alternifolia and Rosmarinus Officinalis, Manuka Honey-based Gel, and Propolis as Antibacterial Agents Against Canine Staphylococcus Pseudintermedius Strains
Abstract: Essential oils (EOs) and honeybee products (e.g., honey and propolis) are natural mixtures
of dierent volatile compounds that are frequently used in traditional medicine and for pathogen
eradication. The aim of this study was to evaluate the antibacterial properties of tea tree (Melaleuca
alternifolia) EO (TTEO), Rosmarinus ocinalis EO (ROEO), manuka-based gel, and propolis against
23 strains of Staphylococcus pseudintermedius (SP) isolated from canine pyoderma. Antimicrobial
resistance screening was assessed using a panel of nine antimicrobial agents coupled with a PCR
approach. An aromatogram was done for both EOs, using the disk diusion method. The minimum
inhibitory concentration (MIC) was determined for all the compounds. Among the 23 SP strains,
14 (60.9%) were multidrug-resistant (MDR), 11 strains (47.8%) were methicillin-resistant (MRSP),
and 9 (39.1%) were non-MDR. The mean diameter of the inhibition zone for Melaleuca and Rosmarinus
were 24.5 8.8 mm and 15.2 8.9 mm, respectively, resulting as statistically dierent (p = 0.0006).
MIC values of TTEO and ROEO were similar (7.6 3.2% and 8.9 2.1%, respectively) and no
statistical significances were found. Honeybee products showed lower MIC compared to those of EOs,
0.22 0.1% for Manuka and 0.8 0.5% for propolis. These findings reveal a significant antibacterial
eect for all the tested products