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Inulin Agar



This is an indicator agar used for differentiating Streptococcus uberis from other E-streps colonies from individual cow samples.



This light purple opalescent agar is prepared from an inulin agar base. The agar has been formulated to differentiate Streptococcus uberis from other E-streps. Streptococcus uberis will ferment the sugar inulin, causing a background yellowing for Streptococcus uberis and no background color change for other suspect E-Strep organisms. On isolates from commercial dairy clinical specimens, this agar will differentiate Streptococcus uberis from other E-streps with a sensitivity of 94 % and specificity of 92%. The most frequently false positive inulin organism isolated from field specimens is Streptococcus bovis. UHS Inulin agar will inhibit a wide variety of fastidious microorganisms.

Refer to table on back for expected culture responses.


Organism Growth Reaction
Strep. agalactiae Weak
Staph. aureus Inhibited
Mycoplasma Not Applicable
Strep. dysgalactiae Excellent
Strep. uberis Excellent Yellow
E- strep Excellent
Staph. species Inhibited
E. Coli Inhibited
Klebsiella pneumoniae Inhibited
Klebsiella species Inhibited
Pseudomonas species Weak
Pseudomonas aeruginosa Inhibited
Pasteurella Inhibited
Proteus Inhibited
Serratia Inhibited
Bacillus Inhibited
Yeast Inhibited
Mold Inhibited
Nocardia Inhibited
Prototheca Inhibited
Trueperella pyogenes Inhibited
C. bovis Inhibited

Additional information

Weight .06 lbs
Dimensions 3.5 × 3.5 × .5 in


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