Back Ground Project

By -
Lysozyme is an enzyme that catalyzes the destruction of the cell walls of certain bacteria, occurring notably in tears and egg white. Lysozyme breaks down the bacterial cell walls and is used to extract recombinant proteins or DNA from bacterial cells. Also used as an antiseptic to prevent caries and treat infant formulas. Like mentioned before it is found in tears, saliva and mucous. It wasn't until 1922 that a Doctor named Alexander Fleming (1881-1995), observed the antibacterial action of Lysozyme when he treated bacterial cultures with nasal mucus from  patient suffering from a head cold.  

Serratia Marcescens is an opportunistic pathogen that cause nosocomial infections. It is resistant to many antibiotics traditionally used to treat bacterial infections, such as penicillin and ampicillin [9]. This is due to all of Serratia marcescens’ characteristics; unique membrane (LPS) as a Gram-negative bacteria, the ability to survive in aerobic and anaerobic conditions, and its motility Not only does S. marcescens have R-factors which encode genes for particular drug resistance, but it also contains sophisticated efflux pumps which further remove toxins that may be fatal to the microorganism. 
 

Comments

Post a Comment

Popular posts from this blog

Blog Post Week 12

By -
Image
This week in Lab the only plastic I am waiting to weigh is SPI6. The reason this one is taking longer is because when I rinsed it with DI water it soaked some of the water up which meant I had to leave it in longer to dry out than the other plastics. Then when it was completely done drying I put the hydrogen peroxide to get rid of any nature products that could have been left behind. Right now they are still drying, until they are completely dry is when I will then be weighing it and that will conclude my last sample for weighing. After that I will finally have all data to analyze. I will be determining which extraction method/ water solution works best on microplastics. I will also be determining plastic loss in all three different solutions and see if there was a was to better change the protocol that the NOAA developed for extraction of microplastics from sediments.
Read more

Blog Post Week 6

By -
Image
This week in lab I finished all the NaCl samples that were run through the vacuum machine. I also ran them with hydrogen peroxide for at least 3 days so that it could get rid of all the nature particles that could be perhaps ruin the measuring at the end. Once all the samples were dried there were some that had sodium chloride attached to them, so because that could have been also a percent error when measuring the plastic I had to clean them and wash them off with DI water and run them through the vacuum machine again. In the process of doing that I ran out of the filters that are attached to the machine so I really only got done with half of the 30 samples. Matt will be ordering more filters the following week but mean while I will be getting the next samples ready that will be run with potassium carbonate. I will have to shred more plastic for all 30 samples again. I have finished collecting sediment and those will be distributed. Really wish we had one of these machines that could
Read more

WAESO Spring 2020

By -
Image
Abstract: Arizona: Lakes, Ponds, and Canals potential impacts of chemical exposures on aquatic bird species   Surface water in metro-Phoenix is contaminated due to urban pollutants, impacts from water reuse, soils, and other human interactions. Harmful contaminant levels, in addition to Nitrate-N, Phosphate- P, temperature, and dissolved O2 may possibly have negative consequences on resident and visiting bird species’ populations. Therefore, we conducted a two-year study of bird use of urban aquatic resources across the metro-Phoenix area, which has raised concerns about the transfer of chemical contaminants from surface water to bird species. The pattern that we see in bird populations in urban aquatic resources appears to be seasonal, with some study sites showing a year-round pattern of use. For highly-used aquatic sites in particular, we report concentrations of water contaminants that may be impacting aquatic bird species. Given that Phoenix is part of the Urban Bird Treaty pro
Read more