Effect of the phenological stage on the chemical composition, and antimicrobial and antioxidant properties of Rosmarinus officinalis L essential oil and its polyphenolic extract

2013 ◽  
Vol 48 ◽  
pp. 144-152 ◽  
Author(s):  
Maria J. Jordán ◽  
Vanesa Lax ◽  
Maria C. Rota ◽  
Susana Lorán ◽  
José A. Sotomayor
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Antioxidant Properties ◽  
Rosmarinus Officinalis ◽  
Phenological Stage ◽  
Polyphenolic Extract ◽  
Rosmarinus Officinalis L

Chemical Composition and Antimicrobial Activity of Rosmarinus officinalis L. Essential Oil Obtained via Supercritical Fluid Extraction

2005 ◽  
Vol 68 (4) ◽  
pp. 790-795 ◽  
Author(s):  
S. SANTOYO ◽  
S. CAVERO ◽  
L. JAIME ◽  
E. IBAÑEZ ◽  
F. J. SEÑORÁNS ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Rosmarinus Officinalis ◽  
Extraction Temperature ◽  
Gas Chromatography Mass Spectroscopy ◽  
The One ◽  
Main Components ◽  
Rosmarinus Officinalis L ◽  
Total Oil

The chemical composition and antimicrobial activity of essential oil–rich fractions obtained by supercritical CO2 extraction from Rosmarinus officinalis L. were investigated. Gas chromatography–mass spectroscopy analysis of these fractions resulted in the identification of 33 compounds of the essential oil. The main components of these fractions were α-pinene, 1,8-cineole, camphor, verbenone, and borneol, constituting ca. 80% of the total oil. The antimicrobial activity was investigated by the disc diffusion and broth dilution methods against six microbial species, including gram-positive bacteria (Staphylococcus aureus and Bacillus subtilis), gram-negative bacteria (Escherichia coli and Pseudomonas aeruginosa), a yeast (Candida albicans), and a fungus (Aspergillus niger). All of the essential oil–rich fractions obtained showed antimicrobial activity against all of the microorganisms tested, with inhibition zones and minimal bactericidal and fungicidal concentration values in the range of 17 to 33 mm and 2.25 to 0.25 mg/ml, respectively. The most active fraction was the one obtained in experiment 4 (4% ethanol as modifier; extraction pressure, 25 MPa; extraction temperature, 60°C). S. aureus was found to be the most sensitive bacteria to the rosemary extracts, whereas the least susceptible was A. niger. α-Pinene, 1,8-cineole, camphor, verbenone, and borneol standards also showed antimicrobial activity against all the microorganisms tested, borneol being the most effective followed by camphor and verbenone. In that way, it was confirmed that essential oil from experiment 4, with the best antimicrobial activity, presented the highest quantity of camphor, borneol, and verbenone.

Chemical composition and possible use as adjuvant of the antibiotic therapy of the essential oil of Rosmarinus officinalis L.

2014 ◽  
Vol 59 ◽  
pp. 290-294 ◽  
Author(s):  
Humberto M. Barreto ◽  
Edson C. Silva Filho ◽  
Edeltrudes de O. Lima ◽  
Henrique D.M. Coutinho ◽  
Maria F.B. Morais-Braga ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Antibiotic Therapy ◽  
Rosmarinus Officinalis ◽  
Rosmarinus Officinalis L
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