title: Antibacterial activity of water and acetone extracts of the roots of Euclea natalensis.
abstract: Water and acetone extracts of the roots of Euclea natalensis A.DC. were investigated for their in vitro antibacterial properties. The Gram-positive bacteria tested appeared to be more susceptible to the extracts than the Gram-negative bacteria. The water and acetone extracts inhibited the growth of Bacillus cereus, Bacillus pumilus, Bacillus subtilis, Micrococcus kristinae and Staphylococcus aureus at concentrations ranging between 0.1 and 6.0 mg/ml. The water extract did not exert any inhibitory action on Gram-negative bacteria while the acetone extract showed inhibitory activity at a concentration of 5.0 mg/ml against all the Gram-negative bacteria investigated. The antibacterial activity of acetone extract was also investigated by a direct bioassay on TLC plates against S. aureus.
authors.affiliation: Department of Botany, University of Pretoria, Pretoria 0002, South Africa.
authors.forename: N
authors.initials: N
authors.lastname: Lall
authors.forename: J J
authors.initials: JJ
authors.lastname: Meyer
mesh_terms: D000096:Acetone; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects*; D008826:Microbial Sensitivity Tests; D010936:Plant Extracts / Q000494:pharmacology; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012997:Solvents; D013019:South Africa; D014867:Water
chemical_list: D000900:Anti-Bacterial Agents; D010936:Plant Extracts; D012997:Solvents; D014867:Water; D000096:Acetone