This study was aimed to investigate the chemical compositions of the essential oils from Goniothalamus mac-rophyllusandGoniothalamusmalayanusgrowinginMalaysia. Theessentialoilswereobtainedbyhydrodistillationandfully characterized by gas chromatography (GC-FID) and gas chromatography-mass spectrometry (GC-MS). Analyses of the essential oils from G. macrophyllus and G. malayanus resulted in 93.6 and 95.4% of the total oils, respectively. The major components of G. macrophyllus oil were germacrene D (25.1%), bicyclogermacrene (11.6%), α-copaene (6.9%) and δ-cadinene (6.4%), whereas in G. malayanus oil bicyclo-germacrene (43.9%), germacrene D (21.1%) and β-elemene (8.4%) were the most abundant components.  ..

384 hits

Xylopia L includes approximately 180 species and is an important genus of the annonacea family due to its production of secondary compounds. It comprises several species that are native to the African region and can serve as valuable medicinal plants thenks to their biological and phamacological properties. In fact, the local populations oftan use it for different medicinal purposes, such as for malaria, cough, stomachache, rheumatism and inflammation.  ..

589 hits

Polyalthia is one of the largest genera in the Annonaceae family, and has been widely used in folk medicine for the treatment of rheumatic fever, gastrointestinal ulcer, and generalized body pain. The present investigation reports on the extraction by hydrodistillation and the composition of the essential oils of four Polyalthia species (P. sumatrana, P. stenopetalla, P. cauliflora, and P. rumphii) growing in Malaysia. The chemical composition of these essential oils was determined by gas chromatography (GC-FID) and gas chromatography-mass spectrometry (GC-MS). The multivariate analysis was determined using principal component analysis (PCA) and hierarchical clustering analysis (HCA) methods. The results revealed that the studied essential oils are made up principally of bicyclogermacrene (18.8%), cis-calamenene (14.6%) and β-elemene (11.9%) for P. sumatrana; α-cadinol (13.0%) and δ-cadinene (10.2%) for P. stenopetalla; δ-elemene (38.1%) and β-cubebene (33.1%) for P. cauliflora; a.....

362 hits

The rich and diversified Malaysian flora represents an excellent resource of new chemical structures with biological activities. The genus Xylopia L. includes aromatic plants that have both nutritional and medicinal uses. This study aims to contribute with information about the volatile components of three Xylopia species essential oils: Xylopia frutescens, Xylopia ferruginea, and Xylopia magna. In this study, essential oils were extracted from the leaves by a hydrodistillation process. The identification of the essential oil components was performed by gas chromatography (GC-FID) and gas chromatography–coupled mass spectrometry (GC-MS). The major components of the essential oils from X. frutescens were bicyclogermacrene (22.8%), germacrene D (14.2%), elemol (12.8%), and guaiol (12.8%), whereas components of the essential oils from X. magna were germacrene D (35.9%), bicyclogermacrene (22.8%), and spathulenol (11.1%). The X. ferruginea oil was dominated by bicyclogermacrene (23.6%), .....

584 hits

The  aims  of  this  study  were  to  analyse  the  essential  oils,  phytochemistry  and cyclooxygenase-2  inhibitory activity of  selected  species  of  the  genus  Polyalthia  (P.  stenopetalla,  P.  sumatrana,  P.  cauliflora  and  P.  rumphii),  Xylopia  (X.  magna,  X.  ferruginea   and   X.   frutescens)   and   Goniothalamus   (G.   macrophyllus   and   G.  malayanus)   from   Annonaceae   family.   The   essential   oils   were   obtained   via  hydrodistillation technique and their chemical compositions were determined by gas chromatography   (GC-FID)  and  gas  chromatography-mass  spectrometry  (GC-MS). The   phytochemicals   were    obtained   using   chromatography   techniques   and   their structures were confirmed by  spectroscopic data and comparison with literatures. The bioactivity of the essential oils and  extracts was investigated using cyclooxygenase-2 (COX-2.....

809 hits