roy at miclis.no
Tue Sep 24 02:59:41 EST 1996
Chris Venema wrote:
> With todays rate of increase in name changing of bugs and classifications
> I'm wondering if anyone can give me a current definition of a coliform?
> Besides being oxidase negative, non spore forming, lactose fermentive
> gram negative bacteria.
> Also are any of the following classed as coliforms Serratia, Hafnia,
> Kluyvera, Leclercia, and Adecarboxylata. I have heard that some Hafnia
> are classed as coliforms and some are not???
> As a bonus question does anyone know what the differences between E.coli
> and E.coli inactive are besides one being lazier than the other.
> Thanks in advance for any info.
In Norway the definition still is;
Gram negative, oxidasenegative rods who can produce acid and gass from lactose at 37
The definition of presumptive E.coli is as above, but incubated at 44,5 degrees celcius,
and in addition the production of indole from trytophane.
The definition of confirmative E.coli is as above, but in adddition;
Voges Proskauer negative
Hope this covered most of your questions!
Næringsmiddeltilsynet i Tønsberg
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