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.
Castillo-Avila
G Margarita
GM
Grupo de Química Orgánica, Unidad de Biotecnología, Centro de Investigación Científicas de Yucatán, Calle 43 No. 130 Col. Chuburná de Hidalgo, Mérida, Yucatán, México.
García-Sosa
Karlina
K
Peña-Rodríguez
Luis M
LM
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