The effects of heavy metals, from Hame-Kasi Mine in Western Iran, on the
in vitro antibacterial effects of the
aqueous extracts of polluted
Verbascum speciosum
Schard. (Scrophulariaceae) flowers in different
concentrations were investigated. Determination of heavy metals (Cu, Fe, Mn, and Zn) in collected soils and
plants from the control and mine area was performed using Flame Atomic Absorption Spectrophotometry.The
control sites were from 5 km distance of the mine. The antibacterial activity of the extracts was examined against
10 bacterial strains (three Gram-positive and seven Gram-negative bacteria). Results showed high Fe, Mn and
Zn concentration in polluted soil, and high Fe concentration in polluted plant in compared to control samples.
The control and polluted aqueous extract appeared to be highly effective on
Salmonella paratyphi
in different
concentrations, but non effective on six other bacteria strains.