|MadSci Network: Microbiology|
Hello! I am in the IB program, and I want to do an experiment where I will test the ideal temperature at which bacteria cultures die. My teacher prefers that I don't culture bacteria in the lab, so I decided to use the bacteria found in standard yogurt (L. Bulgaricus & L. Streptococcus). In my experiment I will add yogurt in pure water and measure the concentration of of the yogurt in the water using a spectrophotometer (Spec 20). I will then heat the mixture and again check the concentration, with the intention of observing changes in the concentration of the bacteria in the yogurt. My concern, however, is whether heating the mixture will change or affect other factors such as killing enzymes or proteins in the mixture, as it will affect my results. Also, is there a better way of carrying out this experiment...or is there a better way of getting the bacteria cultures? You help is great appreciated!
Re: Can I find the concentration of Bacteria inYogurt using a Spectrophotometer
Try the links in the MadSci Library for more information on Microbiology.