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Chemical Composition and Antimicrobial Activity of the Essential Oils from Aerial Parts of Two Marrubium sp. (Lamiaceae) GrowingWild in Lebanon

100%

Grassia A. , Senatore F. , Arnold A. , Bruno M. , Piozzi F. , Rigano D. , Forimsano C.

Polish Journal of Chemistry

2006

tom Vol. 80, nr 4

623-628

The essential oils of aerial parts of Marrubium globosum Montbr. etAuch. ex Benth. ssp. libanoticum (Boiss) Davis and M. cuneatum Banks et Solander (Lamiaceae) growing wild in Lebanon were obtained by hydrodistillation and were analysed by GC and GC-MS. Altogether 64 compounds, representing 93.4% and 91.4% of the oils,were identified. The main components of both oils were beta-caryophyllene (12.4%-5.2%), hexadecanoic acid (7.4%-6.5%) and spathulenol (5.2%-6.5%). Bicyclogermacrene (5.2%) was present only in the oil of M. cuneatum characterized by high amount of germacrene D (15.6%). Oils showed a moderate antimicrobial activity.

Chemical Composition and Biological Activity of Essential Oil from Flowerheads of Centaurea polymorpha Lag. (Asteraceae) GrowingWild in Spain

100%

Forimsano C. , Senatore F. , Bellone G. , Bruno M. , Grassia A. , Raio A. , Rigano D.

Polish Journal of Chemistry

2006

tom Vol. 80, nr 4

617-622

The volatile constituents of the flowerheads of Centaurea polymorpha Lag. were extracted by hydrodistillation and analysed by GC and GC-MS. 63 components, amounting to 91.6% of the oil, were identified. Waxes and sesquiterpenes were the most abundant components in the oil. alfa-Cedrene (3.9%), beta-cedrene (3.6%) and beta-curcumene (3.0%) were the most representative sesquiterpene hydrocarbons while caryophyllene oxide (2.6%) was the most abundant oxygen containing sesquiterpene. The study on the biological activity of the oils showed no significant activity.

Sterols from Leonurus cardiaca L. growing in different geographical areas

100%

Senatore F. , Feo V. , Simone F. , Mscisz A. , Mrugasiewicz K. , Gorecki P.

Herba Polonica

1991

tom 37

nr 1

Badano skład frakcji sterolowej Leonurus cardiaca L. uprawianej we Włoszech i w Polsce. Zawartość steroli w obu porównywanych próbkach była zbliżona, przy czym głównym związkiem był β-sitosterol. Obserwowano różnice w zawartości innych steroli. Jest to prawdopodobnie spowodowane różnicami glebowymi i klimatycznymi.

Sterol composition of Leonurus cardiaca L. cultivated in Italy and in Poland was determined. Total sterol content is nearly the same in both examined samples and β-sitosterol is always the main sterol and it is present in comparable amounts. Some differences for other sterols were observed. This is probably due to different pedoclimatic conditions of growth.