Factors affecting ureolytic activities ofPenicillium waksmanii isolated from sewage sludge

@article{Ismail2008FactorsAU,
  title={Factors affecting ureolytic activities ofPenicillium waksmanii isolated from sewage sludge},
  author={Mady Ahmed Ismail and S. A. Omar},
  journal={Folia Microbiologica},
  year={2008},
  volume={39},
  pages={441-444}
}
Twenty one fungal isolates belonging to 7 genera were screened for ureolytic activity. APenicillium waksmanii isolate was found to be the most potent and was selected for further study. No ammonia-nitrogen was detected inP. waksmanii cultures either urea-free or containing up to 1 g urea per L. The maximum extracellular urease production was recorded at a urea concentration of 15 g/L. It peaked after 6 d of incubation at 25°C when the initial pH of the glucose—peptone broth was adjusted to 6… Expand

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