Essential oils from Piper cernuum and Piper regnellii: antimicrobial activities and analysis by GC/MS and 13C-NMR.

  title={Essential oils from Piper cernuum and Piper regnellii: antimicrobial activities and analysis by GC/MS and 13C-NMR.},
  author={Mara B. Costantin and Patr{\'i}cia Sartorelli and Renata Pereira Limberger and Am{\'e}lia Terezinha Henriques and Martin Steppe and M J U Ferreira and Mitsuharu Ohara and Vicente de Paulo Emerenciano and M J Kato},
  journal={Planta medica},
  volume={67 8},
The essential oils of Piper cernuum and Piper regnellii leaves were analyzed by gas chromatography-mass spectrometry (GC-MS) and the results were compared to that obtained by means of a program designed to analyse (13)C-NMR data of complex mixtures. Bicyclogermacrene (21.88 %)/beta-caryophyllene (20.69 %) and myrcene (52.60 %)/linalool (15.89 %) were the major constituents in essential oil from leaves of P. cernuum and P. regnellii, respectively. Both essential oils presented growth inhibitory… 

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