Hi Everyone,
Unfortunately, I had another week of uneventful lab work. Veterans Day threw my schedule off. I was disappointed in myself for not having much lab time. Next week, I really have to get stuff done. I'm hoping to have good results before Thanksgiving. On top of that, I'll be gone for most of Thanksgiving week, so I'm also trying to complete work for my other classes. I feel ickiest about organic chemistry class. The concepts are super complicated, and I wish I had better base knowledge. Because I didn't have much time in the lab, I could not get a picture of anything, so I enjoy a picture of the organic chemistry work I'm trying to decipher.
On Tuesday, I plated E. Coli and tested the effectiveness of 4 samples to kill the bacteria. The sample included , Aloe Vera gel (store bought), Windex, Tap water, and 70% Isopropyl Alcohol. This experiment was pretty much used to keep me busy as I haven't yet been able to start a project. However when I came in Wednesday, I found some interesting results. The zone of inhibition was basically 0 for every sample, including the isopropyl alcohol. Although the tap water, being the control, and the Windex doesn't jump out as a surprise to me, the 70% Alcohol does. Originally I had two hypothesis's on why this occurred. One being that because E. Coli is a gut bacteria and therefore is built to withstand alcohol. The second theory suggest user error such as the letting the alcohol evaporate to much before I was able to put the disk on the plate. Because of the results on Wednesday and with the first hypothesis in mind, I chose to do another plate instead with Staphylococcus. I ch...
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