CAMACHO-CAMPOS, Conrado et al. Propiedades fitoquímicas y antibacterianas de extractos de Tagetes erecta L. (Asteraceae). []. , 31, 1, pp. 53-64. ISSN 2224-5421.

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El presente trabajo tuvo como objetivo evaluar las propiedades fitoquímicas y antibacterianas de extractos de hojas y flores de Tagetes erecta L. (flor de muerto). Se colectan plantas presentes en el campus de la Universidad de Matanzas y las muestras se lavan, secan y trituran. Se realizan extractos acuosos y etanólicos y se determina las cantidades relativas de varios metabolitos secundarios. Se cuantifica el contenido de azúcares reductores, carbohidratos y proteínas solubles totales. Se evalúa la actividad antibacteriana contra cepas de referencia y salvajes. Se observó la presencia notable de flavonoides, terpenos, taninos, cumarinas y glucósidos cardiotónicos. Los extractos etanólicos de hojas y flores mostraron propiedades antibacterianas frente a Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae y Staphylococcus epidermidis, con valores inhibitorios superiores en las flores. Los resultados obtenidos justifican el uso folclórico de esta especie y las potencialidades para el control de enfermedades bacterianas.

The aim of the present work was to evaluate the phytochemical and antibacterial properties of extracts of leaves and flower of Tagetes erecta L. Plants from the University of Matanzas area were collected. The samples were washed, dried and powdered. Aqueous and ethanolic extracts were prepared and the qualitative amounts of various secondary metabolites assayed. Reduced sugar and total soluble carbohydrates and proteins were also determined. The antibacterial activity against referenced and wild strains was evaluated. Abundance presence of flavonoids, terpenoids, tannins, coumarins and cardiac glycosides was observed. The ethanolic extractos of leaves and flower showed antibacterial properties against Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae y Staphylococcus epidermidis, with higher inhibitory values for the flowers. The obtained results support the folkloric use of this specie and its potentialities for the control of bacterial diseases.

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