SciELO - Scientific Electronic Library Online

 
vol.43 número2In vitro antibacterial activity in seed extracts of Manilkara zapota, Anona squamosa, and Tamarindus indicaIn Vitro Genotoxic Effects of Four Helichrysum Species in Human Lymphocytes Cultures índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

Compartir


Biological Research

versión impresa ISSN 0716-9760

Resumen

MANOJLOVIC, Nedeljko T et al. Phytochemical and antioxidant studies of Laurera benguelensis growing in Thailand. Biol. Res. [online]. 2010, vol.43, n.2, pp.169-176. ISSN 0716-9760.  http://dx.doi.org/10.4067/S0716-97602010000200004.

The aim of this study was to investigate metabolites of the lichen Laurera benguelensis. A high-performance liquid chromatographic (HPLC) method has been developed for the characterization of xanthones and anthraquinones in extracts of this lichen. Lichexanthone, secalonic acid D, norlichexanthon, parietin, emodin, teloschistin and citreorosein were detected in the lichen samples, which were collected from two places in Thailand. Components of the lichen were identifed by relative retention time and spectral data. This is the frst time that a detailed phytochemical analysis of the lichen L. benguelensis was reported and this paper has chemotaxonomic signifcance because very little has been published on the secondary metabolites present in Laurera species. Some of the metabolites were detected for the frst time in the family Trypetheliaceae. The results of preliminary testing of benzene extract and its chloroform and methanol fractions showed that all samples showed a weak radical scavenging activity. The chloroform extract showed the highest antioxidant activity.

Palabras clave : anthraquinones; antioxidant activity; Laurera benguelensis; xanthones.

        · texto en Inglés     · Inglés ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons