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Soil yeasts including Candida tropicalis, Geotrichum capitatum, Rhodotorula minuta and Williopsis californica were isolated from Saudi Arabian soil. The effect of Cd, Cu, Pb, Mn, Ni and Co on the growth of these soil yeasts in Czapek-Dox liquid medium at different concentrations of these heavy metals was investigated. The results provide evidence of the accumulation of metals analysed in the cells...
This study investigated the ability of the soil yeastsGeotrichum candidum and Geotrichum capitatum to produce extracellular amylase in Czapek-Dox liquid medium amended with different concentrations of Cd, Co, Cu, Mn, Ni and Pb. Yeasts were able to survive and grow in the medium containing up to 400 μg/ml of metal ions. Addition of heavy metals caused a highly significant inhibition of amylase production...
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