Essay about Antimicrobial Susceptibility Tests Using The Bsac Method

931 Words Jan 11th, 2016 4 Pages
Table 2. Results for the antimicrobial susceptibility tests using the BSAC method

Organism Microbial
Resistance (mm) CFX CXM CTX CPM
CFX = Cefalexin. CXM = Cefuroxime. CTX = Cefotaxime. CPM = Cefepime. R = Resistant. S = Sensitive.
Table 2 highlights resistance/sensitive of the dissimilar microorganisms to the different sorts of antibiotics. Data of table 2 demonstrates that E.coli strains produced sort of difference in resistance. 310217 type showed resistant to all antibiotics investigated whereas, E. coli strain 704476/2 showed sensitivity to all antibiotics experimented.

Table 3. Results (below) for the microbial toxin tests performed on selected bacterial organisms.

Clostridium perfringens Lecithinase Outcome = Dense cloudy appearance
Staphylococcus epidermidis Clear
Staphylococcus aureus DNAase positive, clearing around growth after treatment with acid.
Staphylococcus epidermidis Negative
Streptococcus pyogenes Haemolysis Beta haemolysis red blood cells have been destroyed and zone is clear
Streptococcus sanguis Alpha haemolysis. Thick cloudy spots.
The capability of different types of bacteria in generating toxins were examined. The experiment revealed that lecithinase formed by Clostridium perfringens while, Staphylococcus epidermidis no ability to form it. Blood agar haemolysis by bacteria showed degree of difference. Staphylococcus auereus reveals ability to produce DNAase whereas,…

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