Essential Oil from Aerial Parts of Wild Algerian Rosemary: Screening of Chemical Composition, Antimicrobial and Antioxidant Activities
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Date
2019
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Publisher
Université de M'sila
Abstract
Essential oils from the aerial parts of 15 samples of Algerian Rosmarinus officinalis L. were
analysed by gas chromatography (GC) and Gas chromatography/mass spectroscopy. Thirty eight components
have been characterized; among the monoterpene hydrocarbons α-pinene, camphene and limonene were
individuated as the main components; camphor, 1,8-cineole and borneol were the principal oxygenated
compounds, caryophyllene, α-bisabolol and partly humulene were the most represented sesquiterpenes. The
scavenging activity of the oils was determined by the DPPH model system. The SC50 (Scavenging Concentration)
values were in the range 120.4-326.1 μL/mL, representing a moderate antioxidant effectiveness. Essential oils
were evaluated for their antimicrobial activity against Escherichia coli and Staphylococcus aureus; as well as
against ten fungal strains belonging to Aspergillus, Alternaria, Candida, Fusarium, Penicillium and
Saccharomyces genera. The results showed a moderate antimicrobial activity. The Algerian rosemary essential
oils could be promising sources of biologically active compounds if they receive further studies on their
biological properties.
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Keywords
Rosmarinus officinalis, essential oil, antimicrobial, antioxidant, GC/MS.