M. Arturoschaan et al., USE OF PERACETIC-ACID AS A DISINFECTANT IN A WATER-TREATMENT PLANT - EFFECT ON THE PLASMID CONTENTS OF ESCHERICHIA-COLI STRAINS, Current microbiology, 32(1), 1996, pp. 43-47
Total thermotolerant coliforms (TTC) and Escherichia coli strains were
isolated from sewage from a treatment plant before and after peraceti
c acid (PAA) disinfection. The plasmid profiles of 120 E. coli strains
were analyzed. Although PAA disinfection effectively reduced the numb
er of TTC and E. coli strains, the percentage of E. coli strains conta
ining plasmids was not statistically different among water samples. Th
e sizes of the plasmids found ranged from < 3 kb to > 56 kb, but plasm
ids of between 3 and 5 kb were encountered most frequently.