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Estimation of growth inhibition by copper and cadmium in heavy metal tolerant actinomycetes
Author(s) -
Amoroso María J.,
Oliver Guillermo,
Castro Guillermo R.
Publication year - 2002
Publication title -
journal of basic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0233-111X
DOI - 10.1002/1521-4028(200208)42:4<231::aid-jobm231>3.0.co;2-h
Subject(s) - cadmium , copper , metal , environmental chemistry , heavy metals , chemistry , estimation , environmental science , economics , organic chemistry , management
A new isothermic model of actinomycetes growth in presence of toxic concentrations of Cd 2+ and Cu 2+ is described. Microbial growth inhibition, displayed as a decrease of biomass, can be correlated with the increase of cadmium(II) or copper(II) concentration in the medium. The reciprocal dry biomass against metal concentration showed a linear correlation higher than 0.9 in tested strains. The mathematical model can be useful to predict the behavior of actinomycetes at inhibitory concentrations of copper(II) and cadmium(II) in large screening procedures.