Origanum virens

The effect of pressure in range 100 to 250 bar for a temperature of 40°C is shown in Figures 2 and 3 for Thyme and Rosemary respectively. It is seen that whereas an increase in pressure beyond 100 bar produced only small changes in the mass of Thyme collected, a substantial increase occurred with Rosemary. ( A similarly large increase was also observed between 200 and 250 bar in less detailed tests with Origanum virens (2)). 

Mathematical Models for Supercritical Extraction of Oregano "Origanum virens L."... 

Origanum virens L., Supercritical Extraction, Fixed Bed, Mass Transfer. 

The extraction of essential oil from oxegano-Origanum virens L.- using liquid carbon dioxide (7 MPa and 298 K) and supercritical carbon dioxide (10 and 15 MPa and 313 K) was investigated. Experimental results were obtained in a laboratory scale plant equipped with a 100 mL tubular extractor. 

Oregano Origanum virens L. is an perennial herb with 40-70 cm high and very aromatic. This plant grows in open and dry countries, at altitudes lower than 500-700 m. The major components of essential oil from Origanum virens L. are terpineol, a-pinene, camphor, thymol, carvacrol and cineole. Compounds such as alcohols and dipentene are also present. 

Salgueiro, L.R., Cavaleiro, C., Pinto, E., Pina-Vaz, C., Rodrigues, A.G., and Palmeira, A. 2003. Chemical composition and antifungal activity of the essential oil of Origanum virens on Candida species. PlantaMedica, 69, 871-874. 

Origanum vulgare ssp. virens (Hoffmanns et Link) letswaart (syn. O. virens Hoffmanns et Link)... 

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