Busy day today Started the day going through…

Busy day today,
Started the day going through wednesday and thursday’s results with Rachael, so she knows where we are with our cultures, and so we can plan what we’re doing next. Taught Hammad how to do water filtration, made up 950ml of M17agar base with 10g Lactose suppliment (suspended in 100ml distilled water), both were autolaved before mixing. After lunch Rachael poured the plates. Made up 2800ml (7 x 400ml) of LB agar and poured plates with five of these. The other two were left for Nicola to add ampicillin and then pour the plates.I also made up 250ml of 0.85% w/v NaCl, this also needed to be autoclaved. Made up two stabs and slopes with the PS aeruginosa broth that i incubated overnight. Counted colony cultures from Sharon’s Brayfod water project.

Today Rachael and I started to isolate single…

Today Rachael and I started to isolate single colonies from the agar plates we incubated yeserday and streak them onto fresh nutrient agar plates. These have been placed in the 37C incubator overnight. Hopefully if there is growth, we can start to Gram stain them, further research will help us to correctly identify them and make up more stabs and slopes. We also streaked a number of yeasts onto MEA and placed them into the 25C incubator. I learned that it is better to incubate some cultures at a lower temperature for longer than at a higher temperature as this could possibly kill some cultures, especially if the higher temperature is at the top end of their tolerance range. Whilst looking at the agar plates from yesterday the P.S. aeruginosa looked cloudy and smeary, very similar to B. cereus and not the expectation of P.S. aeruginosa. We Gram stained a couple of slides using P.S. aeruginosa they were Gram positive, our research showed that it should have been Gram negative, rod shaped. Because of this we are going to streak P.S aeruginosa on Pseudimonas CFC selective agar. Hopefully tomorrow we shall see some results. Thanks to Nicola and Mike i am learning to tag,italics and google chrome.