2015, Number 4
In vitro antimicrobial activity of Pteris vittata L
Language: Spanish
References: 16
Page: 734-741
PDF size: 119.70 Kb.
ABSTRACT
Introduction: Pteris vittata L. leaves (fern) are used by people on the candidiasis treatment and some skin illnesses caused by bacteria.Objective: to identify preliminarily the secondary metabolites present in the leaves of the plant and to evaluate their possible antimicrobial activity.
Methods: Pteris vittata L. leaves were collected. The plant material was washed, disinfected, dried and pulverized. The powder obtained was used to make the various extracts and the tincture. The latter was concentrated and successively fractionated with n-hexane, chloroform, and ethyl acetate. The extracts underwent phytochemical screening, microbiological assays and thin-layer chromatography.
Results: in vitro tests performed in the obtained extracts from the 20% tincture proved that they have antimicrobial activity against Escherichia coli and Staphylococcus aureus, emphasizing the accomplished results against Candida of the ethyl and chloroform acetate extracts. Alkaloids and quinones, which are found in large proportion in the extracts, would be responsible of the above- mentioned antibacterial activity. This was corroborated by the identification of these secondary metabolites through thin-layer chromatography and phytochemical screening.
Conclusions: the combined study through thin-layer chromatography and phytochemical screening of the ethyl and chloroform acetate extracts showed that the antimicrobial activity could be possible due to the alkaloids and quinones presence.
REFERENCES
Rodero L, Córdoba S, Vivot W, Campo M, Corfield P, Olguín C, et al. Método de difusión con discos para la determinación de sensibilidad a fluconazol en aislamientos de Candida spp. Revista argentina de microbiología [serial on the Internet]. 2006 [citado: 1 Dic 2014]; 38: Disponible en: http://www.scielo.org.ar/pdf/ram/v38n3/v38n3a12.pdf
Duraipandiyan V, Ayyanar M, Ignacimuthu S. Antimicrobial activity of some ethnomedicinal plants used by Paliyar tribe from Tamil Nadu, India. BMC Complementary and Alternative Medicine [on-line], 2010 October17 [citado 1 Abr 2010]; 6:35. Disponible en: http://www.biomedcentral.com/1472- 6882/6/35/prepub
Rios MY, Aguilar-Guadarrama AB. Alcaloides indólicos, terpenos, esteroles y flavonoides de las hojas de Hamelia patens Jacquin (Rubiaceae). Rev Cubana Plant Med. 2006 Abr [citado 31 May 2013];11(1). Disponible en: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1028- 47962006000100006&lng=es