Volume 58, Number 573-574, 1978
|Page(s)||111 - 117|
Différenciation rapide des colonies de colibacilles parmi les colonies de coliformesJ. JACQUET and O. COIFFIER
Laboratoire de Microbiologie, U.E.R. des Sciences de la Vie et du Comportement, 14032 Caen cedex
Abstract - A new test is proposed to differenciate E. coli from other coliforms.
Colonies from selective plates were subcultured in a peptone water for indol test and in a malonate broth, incubated at 37° C for 24 hr. The results were compared to Mackenzie, Gilbert and Taylor's for 637 strains sampled in 2 666 coliforms isolated from several types of each of the following: cheeses, milk, cream, sea-water, streams, sewage and stool specimens of calves and chickens. The particular interest of the experiment is that it allows a very precise distinction between E. coli and K. pneumoniae var. oxytoca