First, we checked the plate that we treated with UV light. We only treated it for 30 seconds which turned out to not be enough time. Dr. Pathakamuri told us that bacilli bacteria generally need a longer treatment to be killed.
Then we checked how the Steripen affected the cocktail of all the class's unknowns. It actually killed a large amount of bacteria, only leaving a few colonies.
Then it was time to test the homemade yogurt. This made a lot of people nervous. Hannah and I didn't personally try it but other people said it wasn't too bad but one sample was a little sour.
The top was made from the Kefir milk and the bottom was from the already made yogurt.
For the rest of lab, we watched a few videos on ideas we talked about in class and finalized what each group was doing for their lab experiment. Hannah and I are comparing swabs from human, dog, cat, cow, chicken, rabbit and whatever other types of mouths we can find to see who has the cleaner mouths.
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