In this lab, we made yogurt by doing the following steps:
1. Heated milk in the microwave for 7 to 10 minutes until it boiled
2. Added Probiotic Substances, Kefir, Yogurt with Live and Active Cultures
3. Mix together
4. 40 degree celsius environment
5. Wait for 7-9 hours
(results will be checked on 11/17)
We also tested the effect of UV-C light on bacterial growth. We did this by inoculating a agar plate with our bacteria and then we set the plate under the light for 30 seconds. We expect that it will kill the bacteria, and when we check the results, no bacteria will grow.
Dr. P did another test to check the effect of UV-C light on bacterial growth by putting bacteria in a glass water and put a special UV light pen in the glass (with water and bacteria). The UV light pen kills the bacteria making the water safe to drink.
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