Hello everyone, i would like to tell about Non- Lactose fermenters.there are 4 organisms that do not ferment lactose- proteus,shigella,yersinia,salmonella. These are Gm-ve bacteria. Non lactose fermenters give pale colour on macconkey agar.
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Non-lactose fermenters gives "pale" colour.lactose fermenters give "pink" color.
In this one,i would like tell about proteus briefly.we already came to know general properties of proteus.now they will show "swarming" on blood agar.
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SWARMING on blood agar.
They gives pheny alanine deaminase test +ve.
Odour - Fishy
Produces enzyme - Urease
They are responsible for - Struvite stone/triple phosphate stone in kidney.
They show DIENE'S PHENOMENA
it is coalesce swarming is not seen and there is a line of demarcation when two different strains are grown on blood agar simultaneously.
Never stop learning and thanks for stopping by.
Thanks for reading,
Yours @summisimeon