Antimicrobial compounds isolated from Haematoxylon brasiletto

Area of Science:

• Pharmacology
• Microbiology
• Ethnobotany

Background:

• Haematoxylon brasiletto Karst. (Leguminosae), known as Palo Brasil, is used in Mexican traditional medicine for various ailments.
• Traditional uses include treatment for mouth and kidney infections, hypertension, stomach upsets, gastric ulcers, and diabetes.

Purpose of the Study:

• To evaluate the antimicrobial potential of the methanolic extract derived from Haematoxylon brasiletto bark.
• To determine the efficacy of the extract against a panel of bacteria and Candida albicans.

Main Methods:

• A methanolic extract of Haematoxylon brasiletto bark was prepared.
• Minimum inhibitory concentrations (MICs) were determined using the broth microdilution method.
• The extract was tested against 12 bacterial species and the yeast Candida albicans.

Main Results:

• The Haematoxylon brasiletto extract demonstrated inhibitory effects on eight of the twelve tested microorganisms.
• The minimum inhibitory concentration (MIC) values for the extract ranged from 8.7 to 128 microg/mL.
• The study identified specific microorganisms susceptible to the extract's antimicrobial action.

Conclusions:

• The findings suggest that Haematoxylon brasiletto extracts possess significant antimicrobial properties.
• This research provides a scientific basis for the traditional use of Palo Brasil in treating infections.
• Further investigation into isolated compounds could lead to novel antimicrobial drug development.