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Abstract
Essential oils of rhizomes and aerial parts of Kyllinga brevifolia collected in two municipalities of the State of Pará (Santarém Novo and Salinópolis) in Brazil were obtained by hydrodistillation and analyzed by GC-FID and GC/MS. The oils reveal a high content of the diterpenoids belonging to the labdane group, mostly manoyl oxide (6.8%-31.1%), 13-epi-manoyl oxide (5.7%-26.1%), 11α-hydroxymanoyl oxide (5.9%-16.2%) and 1β-hydroxymanoyl oxide (4.6%-22.1%). Hexane extract obtained of the rhizomes collected in Santarém Novo was rich in manoyl oxide (30.4%), 11α-hydroxymanoyl oxide (26.7%) and 1β-hydroxymanoyl oxide (14.7%).