The essential oil composition of three Zingiberaceae widely used as medicinal aromatic plants from S. Tomé and Príncipe: Aframomum danielli (Hook. f.) K. Schum., Curcuma longa L. and Zingiber officinale Rosc. was studied. Two samples of the essential oils from fruit of A. danielli and from rhizomes of the other two species, were obtained by hydrodistillation and analyzed by GC, GC-MS, and 13C-NMR. The essential oil from fruits of A. danielli has been studied for the first time and was characterised by its high content of monoterpenes, with 1,8-cineole (25.5 - 34.4 %) the major constituent, followed by β-pinene (14.1 - 15.2 %) and α-terpineol (9.9 - 12.1 %). Essential oils from the rhizomes of C. longa contained a lower content of ar-turmerone (4.0 - 12.8 %) than those reported in the literature for C. longa from other origins (24.7 - 31.4 %), whereas the results for Z. officinale essential oils were in accordance with the literature data. The essential oils of A. danielli and Z. officinale showed antimicrobial activity against all Gram-positive and Gram-negative bacteria tested, as well as against yeasts and filamentous fungi, using the agar diffusion method.
References
1
Martins A P, Salgueiro L R, Vila R, Tomi F, Cañigueral S, Casanova J, Proença da Cunha A, Adzet T.
Essential oil composition of four Piper species from S. Tomé e Príncipe.
Phytochemistry.
1998;
49
2019-23
2
Martins A P, Salgueiro L R, Vila R, Tomi F, Cañigueral S, Casanova J, Proença da Cunha A, Adzet T.
Essential oil composition of three Ocimum species traditionally used in S. Tomé e Príncipe.
Planta Medica.
1999;
65
187-99
3
Martins A P, Salgueiro L R, Gonçalves M J, Vila R, Tomi F, Adzet T, Proença da Cunha A, Cañigueral S, Casanova J.
Antimicrobial activity and chemical composition of the bark oil of Croton stellulifer, an endemic species from S. Tomé e Príncipe.
Planta Medica.
2000;
66
647-50
4
Menut C, Lamaty G, Amvam Zollo P H, Atogho B M, Abondo R, Bessière JM.
Aromatic plants of tropical Central Africa. V. Volatile components of three Zingiberaceae from Cameroon: Aframomum melegueta (Roscoe) K. Schum., A. danielli (Hook. f.) K. Schum. and A. sulcatum (Oliv. and Hanb.) K. Schum.
Flavour Fragance Journal.
1991;
6
183-6
7 Mazzoni V. Analyse de Melanges Naturels par RMN du Carbone-13: Extraits Lipidiques, Miels et Huiles Essentielles. Ph. D. Thesis Université de Corse; 1998
8
Sharma R K, Misra B P, Sarma T C, Bordoloi A K, Pathak M, Leclercq P A.
Essential oils of Curcuma longa L. from Bhutan. J. Essent.
Oil Res..
1997;
9
589-92
9
Van Beek T A, Lelyveld G P.
Isolation and identification of the five major sesquiterpenes hydrocarbons of ginger.
Phytochemical Analysis.
1991;
2
26-34
10 Tomi F, Bradesi P, Bighelli A, Casanova J. Computer-aided identification of individual components of essential oils using carbon-13 NMR spectroscopy. J. Magnetic Resonance Analysis 1995: 25-34
11 Council of E urope. European Pharmacopoeia, 3th edn. Strasbourg,; 1997: 121-2
12
Salgueiro L, Vila R, Tomás X, Tomi F, Cañigueral S, Casanova J, Proença da Cunha A, Adzet T.
Chemical polymorphism of the essential oil of Thymus carnosus from Portugal.
Phytochemistry.
1995;
38
391-6
