The same day we attempted the starch test was the same day we did the Casein Hydrolysis test, which tests the bacteria’s ability to digest protein in milk(casein). We first inoculated our bacteria onto a skim milk agar plate. We let the plate sit for 48 hours in an incubator and recorded the results the next lab day. Turned out that our bacteria was negative for caseinase production which means that our bacteria is unable to digest proteins. The results showed that there was no sign of a clear zone around the streak of bacteria which would have indicated a positive result. Our results showed that there was only white surrounding the bacteria, no indication of protein hydrolyzation.
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