Antimicrobial and Antioxidant Activities of Plants from Northeast of MexicoReport as inadecuate

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Evidence-Based Complementary and Alternative MedicineVolume 2011 2011, Article ID 536139, 6 pages

Original ArticleDepartamento de Química Analítica, Facultad de Medicina, U.A.N.L. Monterrey, P.O. Box 2316, Sucursal Tecnol579gico, 64841, N. L. México, Mexico

Received 5 March 2009; Accepted 21 July 2009

Copyright © 2011 Ricardo Salazar-Aranda et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Traditional medicine has a key role in health care worldwide. Obtaining scientific information about the efficacy and safety of the plants from our region is one of the goals of our research group. In this report, 17 plants were selected and collected in different localities from northeast Mexico. The dried plants were separated into leaves, flowers, fruit, stems, roots and bark. Each part was extracted with methanol, and 39 crude extracts were prepared. The extracts were tested for their antimicrobial activity using three Gram-negative bacterial strains Pseudomonas aeruginosa, Klebsiella pneumoniae and Acinetobacter baumannii, three Gram-positive bacterial strains Enterococcus faecalis and two Staphylococcus aureus strains, and seven clinically isolated yeasts Candida albicans, C. krusei, C. tropicalis, C. parapsilosis and C. glabrata; their antioxidant activity was tested using a DPPH free radical assay. No activity against Gram-negative bacteria was observed with any extract up to the maximum concentration tested, 1000 μg ml

. We report here for the first time activity of Ceanothus coeruleus against S. aureus flowers, minimal inhibitory concentration MIC 125 μg ml

, C. glabrata MICs 31.25 μg ml

and C. parapsilosis MICs between 31.25 and 125 μg ml

; Chrysanctinia mexicana against C. glabrata MICs 31.25 μg ml

; Colubrina greggii against E. faecalis MICs 250 μg ml

and Cordia boissieri against C. glabrata MIC 125 μg ml

. Furthermore, this is the first report about antioxidant activity of extracts from Ceanothus coeruleus, Chrysanctinia mexicana, Colubrina greggii and Cyperus alternifolius. Some correlation could exist between antioxidant activity and antiyeast activity against yeasts in the species Ceanothus coeruleus, Schinus molle, Colubrina greggii and Cordia boissieri.

Author: Ricardo Salazar-Aranda, Luis Alejandro Pérez-López, Joel López-Arroyo, Blanca Alicia Alanís-Garza, and Noemí Waksman de T



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