Constituyentes de los aceites esenciales de las hojas y espigas de Piper bisasperatum (Piperaceae)
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Cicció Alberti, José Francisco
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Universidad de Costa Rica
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Se obtuvieron los aceites esenciales de las hojas y de las espigas de Piper bisasperatum, utilizando el procedimiento de hidrodestilación, con rendimientos del 0.4% (volumen por masa de material fresco). La composición de los aceites se estudió utilizando la técnica de cromatografía de gases acoplada a espectrometría de masas (GC-MS). En el análisis del aceite de las hojas se detectaron al menos 85 señales, de las cuales se identificaron 39 compuestos que representan el 80.3% del aceite. Los compuestos más abundantes que se identificaron fueron los monoterpenos
The composition of the essential oils of the leaves and spikes of Piper bisasperatum Trel. (Piperaceae) obtained by bydrodistiUation were invéstigated by GC-MS. The main constituents of the leaves oH were the sesquiterpenes germacrene D (30.7%), 8-caryopbyllene (9.5%) and y-elemene (5.9%), together witb too monoterpene 8-pinene (5.5%). The main constituents of tbe spikes (tlowers and fruits) were too monoterpenes 8-pinene (17.5%), orpinene (14.0%) and the sesquiterpenes ¡ermacrene D (19.5%), B-caryopbyllene (7.9%) and ylangene (7.6%). The C6-C¡ compounds benzyl benzoate (0.3%) and benzaldebyde (<0.1 %) were identified for tbe first time in the genus Piper,
The composition of the essential oils of the leaves and spikes of Piper bisasperatum Trel. (Piperaceae) obtained by bydrodistiUation were invéstigated by GC-MS. The main constituents of the leaves oH were the sesquiterpenes germacrene D (30.7%), 8-caryopbyllene (9.5%) and y-elemene (5.9%), together witb too monoterpene 8-pinene (5.5%). The main constituents of tbe spikes (tlowers and fruits) were too monoterpenes 8-pinene (17.5%), orpinene (14.0%) and the sesquiterpenes ¡ermacrene D (19.5%), B-caryopbyllene (7.9%) and ylangene (7.6%). The C6-C¡ compounds benzyl benzoate (0.3%) and benzaldebyde (<0.1 %) were identified for tbe first time in the genus Piper,