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Brazilian Archives of Biology and Technology

Print version ISSN 1516-8913On-line version ISSN 1678-4324


ATTI-SANTOS, Ana Cristina et al. Physico-chemical evaluation of Rosmarinus officinalis L. essential oils. Braz. arch. biol. technol. [online]. 2005, vol.48, n.6, pp.1035-1039. ISSN 1516-8913.

Nineteen samples of Rosmarinus officinalis were extracted by steam distillation in a pilot plant and evaluated in terms of chemical compositions and physico-chemical characteristics. The volatile oil yields ranged from 0.37% (1999 harvest) to 0.49% (1998 harvest). Twenty components were identified in the oils. The major components were alpha-pinene (40.55 to 45.10%), 1,8-cineole (17.40 to 19.35%), camphene (4.73 to 6.06%) and verbenone (2.32 to 3.86%). The physico-chemical parameters averaged 0.8887 g/cm3 for specific gravity, 1.4689 for refractive index, and +11.82° for optical rotation, and there were no significant variations in either the chemical or physico-chemical data in the different years.

Keywords : Rosmarinus officinalis; rosemary; essential oil composition; alpha-pinene; 1,8-cineole; physico-chemical parameters.

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