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ABSTRACT
Antimicrobial activity of two trade lots of essential oils from Rosa alba L. against Gram-positive bacteria, belonging to genera Staphylococcus and Bacillus, Gram-negative bacteria, belonging to genera Escherichia, Pseudomonas, Salmonella and Citrobacter and yeasts, belonging to genera Candida was investigated. It was determined that Gram-positive bacteria were more sensitive and Gram-negative bacteria, especially Pseudomonas spp., were more resistible to essential oils and pure components. The major pure constituents citronellol, geraniol and nerol demonstrated higher antimicrobial activity in comparison with essential oil samples.
