Today in lab, we took out our three milk slash yogurt cups! The control milk spoiled and had a rotten smell. The cups with the pro-biotic tablet & the Kefir did produce yogurts! Yogurt is produced when the bacteria ferments the milk. We tasted them both and the Kefir yogurt was much smoother however both needed some sort of fruit, granola or honey because they were very bland.
(Left to Right) Pro-Biotic Cup & Kefir Cup
We also took a little adventure to the greenhouse because our professor is always encouraging us to be curious and to ask questions. I loved the greenhouse and am on the hunt for the perfect plant for my dorm.
Our Class in the Greenhouse
A Beautiful Flower
After a trip to the greenhouse, we took our frozen environmental samples (from a few labs ago) out of the freezer (kept at -80 degrees) and created a streak plate out of them. We then placed it in the incubator so see if the bacteria was perserved correctly and as a result would grow.
We also checked on our UV streak plate. Bacteria 'L' did grow. Our professor informed us that it was an error of our own that the UV light did not kill the bacteria. It is due to inadequate exposure to the UV light and we should have left the sample under the light for at least 60 seconds. We also checked the streak plate from the water purifier and determined that the purifier did kill all the bacteria!!! Such a wonderful invention!
Until next lab!
Annie B
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