Extract News! – Brianna

I was able to obtain a total of 6 extracts between my 4 samples (there was a little bit of labeling issues, so I could not combine the duplicate sets). I chose to test these extracts against  #1 (Staphylococcus epideridis) and #4  (Enterococcus raffinosus) as the gram positive ESKAPE pathogens and #3 (Erwinia carotovura) and #7 (Enterobacter aerogenes) as the gram negative. These were chosen since my producers  showed inhibition against these pathogens (some showed against one or two, but not all three at once) with the exception of number 7 (which was chosen out of convenience).

Out of all the extracts, two showed inhibition against Staphylococcus epideridis, Enterococcus raffinosus and Erwinia carotovura . While the numbering/labeling was messed up from before, these were my two pigmented extracts. I believe these correspond to my samples, PDA #2 and LB #2.

 

Here is a table summarizing the cell free and colony inhibition tests.

 

 

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