SummaryCordia dendata Poir, Heliotropium indicum Linn and Momordica charantia Linn are used for treatment of the most common human diseases and health disorders in folk medicine of the population from the northern Colombian coast. In this study, chemical composition and antibacterial activity of the ethanol extract and fractions from C. dentata, H. indicum and M. charantia were investigated. The chemical constituents of qualitative detection were examined by Thin Layer Chromatography (TLC). The antibacterial activity was determined by agar gel diffusion and broth microdilution method. The main identified compounds were flavonoids, cardiac glycosides, alkaloids, saponins, terpenoids, tannins and coumarins. The minimal inhibitory concentration (MIC) was 31.25 to 1000 g/mL for Gram-positive and Gram-negative bacteria, respectively. These results indicated that ethanol extract and fractions from C. dentata, H. indicum and M. charantia significantly inhibited the growth of standard strains. Potent antibacterial activities of C. dentata, H. indicum and M. charantia may be considered in future study, particularly against antibiotic-resistant cases. Keywords: Cordia dendata

The genus Malachra L. belongs to the family Malvaceae. It includes herbs or subshrubs of nine accepted species with approximately thirty synonyms, and it has been widely used in community folk medicine to treat health problems including inflammation, nasal obstruction, leishmaniasis, malaria, childbirth, kidney disorders, fever, respiratory tract diseases, among others. From the genus Malachra L., flavonoids, steroids, triterpenes, anthocyanins, leucoanthocyanins, saponins, carbohydrates, phenols, glycosides, and alkaloids have been isolated and identified. Some pharmacological reports have indicated that the genus has antidiarrheal, antiepileptic, antiulcerogenic, antioxidant, anticonvulsant, antiviral, anticancer, antibacterial, anthelmintic, and hepatoprotective properties. However, there have been limited studies of bioactive molecules with pharmacological and biological activities associated with Malachra alceifolia Jacq., Malachra capitata (L.) L., Malachra fasciata Jacq., Malachra radiata (L.) L., Malachra ruderalis Gürke., Malachra rudis Benth., Malachra helodes Mart., Malachra urens Poit. ex Ledeb. & Alderstam., and Malachra officinalis Klotzsch. In this review, we consider the conservation of these species to save the ancestral knowledge of their traditional use in populations, and their pharmacological potential for future studies in search of alternatives for solutions to diseases in humans and animals and tools for the design and search of potential bioactive compounds against infectious and non-infectious agents.

La metodología analítica para la cuantificación de warfarina sódica en tabletas de5 mg fue estandarizada y validada mediante cromatografía líquida de alta eficienciaacoplada a detector de arreglo de diodo (HPLC-DAD). Se usó como fase móvil unamezcla compuesta por MeOH-AcOH-H2O (68:1:32), una columna cromatográficaC8e Phenomenex® de 150 x 4,6 mm y tamaño de partícula de 5 μm. Los resultadosanalíticos muestran que el método es preciso, exacto y selectivo para este fármaco. Lacurva de calibración se realizó en un intervalo del 80 al 120%, en una concentraciónnominal de 0,1mg/mL, demostrando ser lineal con un coeficiente de correlación ar2> 0,990; el porcentaje de recuperación fue de 98,1%±1,3, la precisión medida através de la repetibilidad y la precisión intermedia fue adecuada (%RSD<2). En laprueba de disolución se encontró un porcentaje de 92,3% ± 3. Por lo tanto, la metodologíadesarrollada cumple con las especificaciones establecida por la USP 38/NF.