A comparison between toxicity tests using single species and a microbial process

  • Van Beelen P
  • Fleuren-Kemilä A
  • 1


    Mendeley users who have this article in their library.
  • 7


    Citations of this article.


In this study the sensitivity of the acetate mineralization process performed by five strains of microorganisms in soil for the toxicants Zn2+or PCP was calculated from the sensitivity of the contributing species. The species used were a fungus (Aspergillus niger CBS 121.49), an actinomycete (Streptomyces lividans 66), two Gram-negative Pseudomonas putida strains (MT-2 and DSM 50026) and a Gram-positive strain Rhodococcus erythropolis A177. For zinc the EC10 of the process performed by the five strains together was 77 mg/kg whereas for pentachlorophenol it was 2 mg/kg. The EC10 of the process was compared with the EC50 of the most sensitive species contributing to the process. P. putida MT2 was the most zinc sensitive strain (EC50 = 22 mg Zn/kg) and A. niger was the most sensitive strain for pentachlorophenol (EC50 = 1.4 mg/kg). This shows that a 10% inhibition of a process can be accompanied by a more than 50% inhibition of the most sensitive species.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • Patrick Van Beelen

  • Arja K. Fleuren-Kemilä

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free