Chemical Diversity of Essential Oils from Aerial Parts of Eight Species of Zingiberaceae Family from Vietnam

The objective of this work was to analyze the content and the chemical diversity of the essential oils from the aerial parts of eight species belonging to Zingiberaceae family collected in Binh Chau-Phuoc Buu Nature Reserve, Vietnam. The essential oils were isolated by hydrodistillation and their constituents were investigated by gas chromatography-mass spectrometry. The essential oils from the aerial parts of eight studied species, including Zingiber zerumbet, Zingiber pellitum, Curcuma pierreana, Globba macrocarpa, Globba globulifera, Alpinia conchigera, Stahlianthus campanulatus and Amomum sp. were obtained in a yield of 0.01%, 0.008%, 0.01%, 0.012%, 0.012%, 0.02%, 0.015 and 0.3%, respectively. There were a total of 75 compounds identified from the essential oils obtained from eight studied species. Four main clusters and three subclusters were formed by the cluster analysis. Cluster I consisted of A. conchigera with the presence of β-elemene (51.76%) and caryophyllene (28.1%). Cluster II contained five species, including Z. zerumbet, Z. pellitum, C. pierreana, G. globulifera and S. campanulatus with high concentration of β-pinene (11.81%, 5.32%, 4.43%, 25.42% and 1.57%), caryophyllene (13.61%, 23.45%, 19.78%, 34.26% and 18.72%), caryophyllene oxide (4.66%, 4.00%, 13.65%, 8.15% and 24.69%). Cluster III consisted of G. macrocarpa , and presented 4-isobutylquinoline (24.43%), β-copaene (21.69%), α-farnesene (20.73%), 2-tert-butylquinoline (6.05%), 3-Dihydroxydiphenylamine (5.47%), β-panasinsene (5.13%) as major compounds. Cluster IV contained Amomum sp. and had eucalyptol (25.22%), camphor (24.51%), camphene (14.57%), β-pinene (13.45%), Isoborneol (9.17%), α-Selinene (6.21%) as main constituents.