“…A number of studies have focused on the synergistic activity of the EO in combination with antibiotic to minimize the side effects of the antibiotic (Mahboubi & Bidgoli, 2010;Rosato et al, 2009;Tohidpour, Sattari, Omidbaigi, Yadegar, & Nazemi, 2010), while the combinations of EO with other natural antibacterial compounds (e.g., nisin) was used in food to reduce the minimum effective dose of EO (Solomakos, Govaris, Koidis, & Botsoglou, 2008). However, a few studies regarding the synergistic effects of EO combinations to obtain effective antimicrobial activity at sufficiently low concentrations and consequently reduce negative sensory impact were performed (Gutierrez, Barry-Ryan, & Bourke, 2009).…”