Bioactivities of Piper aduncum L. and Piper obliquum Ruiz & Pavon (Piperaceae) essential oils from Eastern Ecuador

Alessandra Guerrini, Gianni Sacchetti, Damiano Rossi, Guglielmo Paganetto, Mariavittoria Muzzoli, Elisa Andreotti, Massimiliano Tognolini, Maria E. Maldonado, Renato Bruni

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Essential oils from aerial parts of Piper aduncum (Matico) and Piper obliquum (Anis del Oriente) of ecuadorian origin were analyzed by GC-FID, GC-MS, 13C NMR and their biological and pharmacological activities were assessed. Chemical composition proved to be unusually different from previous reports for safrole-rich P. obliquum (45.8%), while P. aduncum main constituent was dillapiol (45.9%). No genotoxic activity was found in the Ames/Salmonella typhimurium (TA98 and TA100) assay, either with or without S9 activation. Mutagen-protective properties, evaluated using sodium azide, 2-nitrofluorene and 2-aminoanthracene as mutagens/promutagens, was observed against promutagen 2-aminoanthracene, likely in consequence of microsomial deactivation. Antimicrobial assays have been performed on Gram+/Gram- bacteria, dermatophyte and phytopathogenic fungi and best results were provided by P. aduncum against fungal strains with complete inhibition at 500 μg/ml. Preliminary analgesic and antithrombotic activities evidenced the absence of the former in hot plate and edema assays and a limited antiplatelet action against three different agonists (ADP, AA and U46619). Both oils have a very limited antioxidant capacity.

Original languageEnglish
Pages (from-to)39-48
Number of pages10
JournalEnvironmental Toxicology and Pharmacology
Issue number1
StatePublished - Jan 2009


  • Antimicrobial
  • Antimutagenicity
  • Essential oil
  • Piper aduncum
  • Piper obliquum
  • Toxicity


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