SciELO - Scientific Electronic Library Online

vol.18 número4Anthelmintic activity of flavonoids isolated from roots of Andira anthelmia (Leguminosae)Chemical composition and evaluation of the antibacterial activity and toxicity of the essential oil of Croton zehntneri (variety estragol) índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Revista Brasileira de Farmacognosia

versión On-line ISSN 1981-528X


BARATTO, Leopoldo et al. Investigation of the allelopathic and antimicrobial activities of Mikania laevigata (Asteraceae) obtained in hydroponic and traditional cultivars. Rev. bras. farmacogn. [online]. 2008, vol.18, n.4, pp. 577-582. ISSN 1981-528X.

The ethanolic extract of "guaco" (Mikania laevigata) traditionally cultivated in the soil or in a hydroponic system were tested for allelopathic and antimicrobial activities. Allelopathic activity was evaluated by the inhibition of germination assay using lettuce seeds, and antimicrobial activity by the disc diffusion assay. A notable allelopathic effect was observed for both extracts, although a more expressive activity of traditional "guaco" was verified, since the inhibition of seeds germination was 100% even in the lower concentration. None ethanolic extract of "guaco" presented significant antimicrobial activity against Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Enterococcus faecalis and Enterococcus faecium.

Palabras clave : Mikania laevigata; Allelopathy; Antimicrobial activity; Hydroponics; Traditional cultivation.

        · resumen en Portugués     · texto en Portugués     · pdf en Portuguéspdf en Portugués