A new membrane filtration medium for simultaneous detection and enumeration of Escherichia coli and total coliforms.
AUTOR(ES)
Grant, M A
RESUMO
Recovery of total coliforms and Escherichia coli on a new membrane filtration (MF) medium was evaluated with 25 water samples from seven states. Testing of the new medium, m-ColiBlue24 broth, was conducted according to a U.S. Environmental Protection Agency protocol. For comparison, this same protocol was used to measure recovery of total coliforms and E. coli with two standard MF media, m-Endo broth and mTEC broth. E. coli recovery on the new medium was also compared to recovery on nutrient agar supplemented with 4-methylumbelliferyl-beta-D-glucuronide. Comparison of specificity, sensitivity, false positive error, undetected target error, and overall agreement indicated E. coli recovery on m-ColiBlue24 was superior to recovery on mTEC for all five parameters. Recovery of total coliforms on the new medium was comparable to recovery on m-Endo.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=168658Documentos Relacionados
- New medium for the simultaneous detection of total coliforms and Escherichia coli in water.
- New Medium for the Simultaneous Detection of Total Coliforms and Escherichia coli in Water
- Evaluation of the Autoanalysis Colilert test for detection and enumeration of total coliforms.
- Improved membrane filtration media for enumeration of total coliforms and Escherichia coli from sewage and surface waters.
- Comparison of membrane filtration and Autoanalysis Colilert presence-absence techniques for analysis of total coliforms and Escherichia coli in drinking water samples.