Hydrodistilled essential oil from Rhododendron anthopogonoides Maxim. (Ericaceae) aerial parts was analysed by gas chromatography-mass spectrometry (GC-MS). A total of 42 compounds, accounting for 95.48% of the total oil, were identified. The main constituents of the essential oil were benzyl acetone (34.41%), nerolidol (10.19%), 1,4-cineole (8.41%), beta-caryophyllene (5.63%), gamma-elemene (5...

The essential oils of two Alpinia species, ie. A. hainanensis and A. katsumadai, from Hainan Island, China were analyzed by using GC-MS. The major constituents in the leaf oil of A. hainanensis were ocimene (27.4%), beta-pinene (10.1%), 9-octadecenoic acid (6.5%), n-hexadecanoic acid (5.8%), 9,12-octadecadienoic acid (5.4%), and terpinen (4.3%). The oil constituents obtained from the flowers of...

Essential oils of Nepeta parnassica, collected at different developmental stages, were analyzed by means of GC/MS. From the fifty-five identified constituents in samples A and B, representing 94.8% and 98.7% of the oils respectively, 4a(alpha),7alpha,7alpha(beta)-nepetalactone (22.0%), 1,8-cineole (21.1%), alpha-pinene (9.5%) and 4a(alpha),7,beta,7alpha(beta)-nepetalactone (7.9%) were the major...

the composition of the volatile oils obtained from the aerial parts of artemisia deserti krasch. and a. oliveriana j. gayex dc. was analyzed by gc and gc/ms. while the oil of a. deserti contained camphor (45.5%), 1,8-cineole (16.7%), piperitone (8.6%), ?-pinene (5.7%) and isoborneol (3.2%), the oil of a. oliveriana contained ?-thujone (65.4%), camphor (11.5%), 1,8-cineole (9.2%) and pinocavone ...

the essential oils isolated by hydrodistillation from the leaves of two eucalyptus gillii maiden and e. microcarpa subsp. macrocarpa hook were analysed by gc and gc/ms. the main components identified in e. gillii oil were 1, 8-cineole (79.5%), trans-pinocarveol (8%) and ?-pinene (2.7%), and in e. microcarpa were 1, 8-cineole (77.3%), ?-pinene (5.6%) and terpin-1-ol (5.1%). oils with high conten...

Volatile oils from single plants of Thymus serpylloides ssp. gadorensis were collected from Southeastern Spain and studied to check for chemical variability using gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). Many of the samples showed a phenolic chemotype, while another important group had significant levels of linalool. Geraniol, myrcene, caryophyllene oxide, terpi...

In this study, Rosmarinus officinalis L. essential oil and three of its main components 1,8-cineole (27.23%), α-pinene (19.43%) and β-pinene (6.71%) were evaluated for their in vitro antibacterial activities and toxicology properties. R. officinalis L. essential oil possessed similar antibacterial activities to α-pinene, and a little bit better than β-pinene, while 1,8-cineole possessed the low...

GC-MS analysis identified forty seven and fourteen components in oils extracted using HD and in the volatile fractions extracted using HSE, respectively. eudesm-7(11) en-4-ol (28.46%), α-terpinyl acetate (12%), germacrene D-4-ol(7.3%), 1,8-cineole (6.22%), δ-cadinene (6.49%), bicyclogermacrene (5.20%) and α-cadinol (5.06%) were recorded as the main components of the essential oil and The major ...

The essential oils isolated by hydrodistillation from the leaves of two Eucalyptus gillii Maiden and E. microcarpa Subsp. macrocarpa Hook were analysed by GC and GC/MS. The main components identified in E. gillii oil were 1, 8-cineole (79.5%), trans-pinocarveol (8%) and ?-pinene (2.7%), and in E. microcarpa were 1, 8-cineole (77.3%), ?-pinene (5.6%) and terpin-1-ol (5.1%). Oils with high conten...

The essential oils isolated by hydrodistillation from the leaves of two Eucalyptus gillii Maiden and E. microcarpa Subsp. macrocarpa Hook were analysed by GC and GC/MS. The main components identified in E. gillii oil were 1, 8-cineole (79.5%), trans-pinocarveol (8%) and ?-pinene (2.7%), and in E. microcarpa were 1, 8-cineole (77.3%), ?-pinene (5.6%) and terpin-1-ol (5.1%). Oils with high conten...