vOlatile constituents of brazilian piperaceae, part 5. The oils of pothomorphe umbellate and p. Peltate

Abstract

The essential oils obtained from leaves and thin branches of Pothomorphe umbellata (L.) Miq. And Pothomorphepeltata (L.) Miq. Were investigated by GC/MS. The principal constituents identified in the oil of P. Umbellata were β-caryophyllene (14.8%), germacrene D (27.4%), bicyclogermacrene (11.5%) and δ-cadinene (13.3%), comprising to 67% of the oil. The major components identified in the oil of P. Peltata were β-caryophyllene (39.0%), α-humulene (6.4%), germacrene D (8.7%), (E)-nerolidol (11.7%) and caryophyllene oxide (7.2%), corresponding to 73% of the oil. Except for octadecanol found in the oil of P. Peltata, all other (39) compounds identified in both species were sesquiterpenes. © 1999, Taylor & Francis Group, LLC. All rights reserved.