Abstract
Microorganisms derived from soil, sludge, sewage or river water contaminated by detergents or mineral oils were enriched and tested for the capability of primary biodegradation of dialkyl sulfosuccinates (DASS). Adapted mixed cultures, containing predominantly Gram-negative bacteria, degraded di-n-hexyl sulfosuccinate (DHSS) more readily than di-n-octyl sulfosuccinate (DOSS). Bacterial isolates obtained from enriched mixed cultures that show the highest rates of primary biodegradation and assimilation of DASS belong to the genusComamonas. Under nongrowth conditions, the DHSS primary biodegradation by these strains follows the 1st order reaction kinetics. The rate constants of primary degradation of DHSS by resting cells ofC. terrigena N3H were found to be 30 times higher than when catalyzed byC. terrigena N1C. The capacity for accelerated removal of surface-active properties of DHSS byC. terrigena N3H was retained within the range of pH 4–10 and at temperatures up to 55°C, while DHSS degradation byC. terrigena N1C was completely inhibited above 48°C. Temperature and pH limits for DHSS primary degradation by both strains were to a great extent wider than those for the viability of the cultures. Biodegradation capacity and metabolic stability ofC. terrigena N3H make this strain interesting from both scientific and technological point of view.
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Prokšová, M., Augustín, J. & Vrbanová, A. Enrichment, isolation and characterization of dialkyl sulfosuccinate degrading bacteriaComamonas terrigena N3H andComamonas terrigena N1C. Folia Microbiol 42, 635–639 (1997). https://doi.org/10.1007/BF02815478
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DOI: https://doi.org/10.1007/BF02815478