Antioxidants from the leaf extract of Byrsonima bucidaefolia.
The radical scavenging assay-guided fractionation of the leaf extract of Byrsonima bucidaefolia Standl. yielded two metabolites with antioxidant activity, identified as methyl gallate (1) and methyl m-trigallate (2) on the basis of their spectroscopic data. Both 1 and 2 were identified as artifacts of the extraction and/or the purification process, possibly resulting from transesterification of precursor gallotannins. Evaluation of the antioxidant activity of both the isolated metabolites 1 and 2 and three of their derivatives (3-5), showed that 1 and 2 have a stronger antioxidant activity than vitamin C when tested using the DPPH reduction assay.
Grupo de Química Orgánica, Unidad de Biotecnología, Centro de Investigación Científicas de Yucatán, Calle 43 No. 130 Col. Chuburná de Hidalgo, Mérida, Yucatán, México.
G Margarita
GM
Castillo-Avila
Karlina
K
García-Sosa
Luis M
LM
Peña-Rodríguez
D000975:Antioxidants / Q000737:chemistry* / Q000494:pharmacology; D001713:Biphenyl Compounds / Q000737:chemistry; D029581:Malpighiaceae / Q000737:chemistry*; D015394:Molecular Structure; D010851:Picrates / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry*
D000975:Antioxidants; D001713:Biphenyl Compounds; D010851:Picrates; C004931:1,1-diphenyl-2-picrylhydrazyl