Kvasny Prum. 1975; 21(4): 79-80 | DOI: 10.18832/kp1975012

Effects of Mn++ a Mg++ on inhibition of lactic acid bacteria growth by Cd ++.Peer-reviewed article

J. ŠAVEL, M. PROKOPOVÁ

The article deals with the toxic effects Cd ⁺⁺   has upon lactic acid bacteria. Experiments  strains carried out with 15 samples [ 8 strains of lactobacilli and  7 strains of pediococci] show conclusively that inhibiting effects of Cd ⁺⁺ upon the growth of strains depend on the concentration of Mn ⁺⁺ present in the medium. In medium containing MnSO₄  the toxicity of Cd ⁺⁺ is far more pronounced with pediococci than with lactobacilli. The lower is the Mn ⁺⁺ concentration in the medium the more harmful is the influence of Cd ⁺⁺ . In medium prepared from well fermented wort and a number of other ingredients and containing 40 mg/l of MnSO₄ . 4 H₂O the minimum inhibiting concentration of CdCl₂ . 2,5 H₂O for lactobacilli was from 200 to 1400 mg/l, where as for pediococci only 1,6 to 100 mg/l. In the same medium, but without MnSO₄  the concentration were 50-400 mg/l and 0.1-12.5 mg/l respectively.
(In Czech, English summary only)

Keywords: lactic acid bacteria, inhibition, Mn, Cd, Mg

Published: April 1, 1975