1887

Abstract

Summary: A Gram-positive, aerobic, endospore-forming bacterium was isolated by an enrichment technique for the ability to degrade cyanide and was identified as a strain. The bacterium rapidly degraded 100 mg I of free cyanide in the absence of added inorganic and organic substances. The ability to degrade cyanide was linked to the growth phase and was not exhibited before late exponential/early stationary phase. Cyanide-degrading activity could not be induced before this time by the addition of 20 mg cyanide I. Production of the cyanide-degrading activity required 0·01 mg Mn I and did not occur at Mn concentrations below 0·002 mg I. Cyanide-degrading activity was intracellular and cell-free extracts rapidly degraded cyanide.

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/content/journal/micro/10.1099/00221287-137-6-1397
1991-06-01
2021-05-16
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