por Vanessa Scott hace 2 años
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Result: Colorless colonies (negative result for lactose fermentation)
Result: Colorless colonies (coloration of medium) (Non-lactose fermentation)
Result: Colorless colonies (Non-lactose fermentor)
Result (indicated by Slant/Butt/Gas/H2S): K/A/v/- -Yellow/acidic = A -Pink/alkaline = K -Gas bubble in medium = + CO2/H2 production -Black precipitation = + for H2S production -Variable results = V
Yersinia enterocolitica
Result: Colorless colonies with black centers (Non-lactose fermentor, but the black centers suggest H2S gas production)
Result (indicated by Slant/Butt/Gas/H2S): K/A/-/+ -Yellow/acidic = A -Pink/alkaline = K -Gas bubble in medium = + CO2/H2 production -Black precipitation = + for H2S production -Variable results = V
Salmonella enterica
Result: Bright pink colonies (positive result for lactose fermentation)
EMB Test
Result: Dark Purple color on medium (positive result for lactose fermentation)
Result = Positive (Indicated by bright blue color change)
Klebsiella pnemoniae
Result: Metallic Green color on medium (positive result for lactose fermentation)
SS Test
Result: Mostly inhibited (but can have some pink colonies) -if pink, indicates lactose fermentor
TSI Slant Test
Result (indicated by Slant/Butt/Gas/H2S): A/A/v/- -Yellow/acidic = A -Pink/alkaline = K -Gas bubble in medium = + CO2/H2 production -Black precipitation = + for H2S production -Variable results = V
Citrate Test
Result = Negative (Indicated by no color change from green)
Escherichia coli
Negative Result= No bubbling (organism does not produce catalase)
Result: Inhibited (cannot withstand high salt concentration)
Result: α-hemolysis (greenish halo around colonies)
Streptococcus pneumoniae
Streptococcus pyogenes
Positive Result = Bubbling (organism produces catalase)
MSA Test
Result: Growth, no color change. (cannot ferment mannitol)
Result: Non (y) (no change to surrounding medium)
Staphylococcus epidermis
Result: Growth, yellow medium. (can ferment mannitol)
BAP Test
Result: β-hemolysis (clear halo surrounding colonies)
Staphylococcus aures
