Volatile constituents of the leaves of Siparuna thecaphora (Siparunaceae) from Turrialba, Costa Rica

ABSTRACT

The composition of the essential oil from leaves of Siparuna thecaphora (Poepp. et Endl.) A. DC. collected in Turrialba, Costa Rica, was determined by capillary GC/MS. Seventy-six compounds were identified corresponding to ca. 95 percent of the oil. The major components were germacrene D (32.7 percent), alpha-pinene (16.3 percent), beta-pinene (13.8 percent) and beta-caryophyllene (4.1 percent). Thirty-one minor compounds were identified for the first time in this genus of plants