Kuşçu, İrem (2015) EFFECT OF FAT CONCENTRAION IN PASTEURIZED MILK ON REPRODUCTION RATE OF ESCHERICHIA COLI. Other thesis, TED Ankara Koleji.
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Abstract
As pasteurized milk was accepted to be free from any type of bacteria contamination in the beginning, the different ingredients in different ratios can cause reproduction of several bacteria. According to nutrition amount, reproduction rate and number can differ from each other. In this experiment, fat concentration in milk was taken as independent variable as fat being a long-term energy source. Thus, the purpose of this study was to examine the effect of fat concentration on milk which leads my research question How does different fat concentration of milk (100% and 0.1 %) affect the reproduction of Escherichia coli in Mueller Hinton agar plate by using the method dilution in 1/100 ratio and plating? Although there are several methods for determining the number of bacteria, counting method was easiest to apply and quickest to obtain results. However before starting to experiment, it is important to know if milk contains any other substances to avoid systematic error. Moreover, before planting E.coli, the suspension should be diluted and than planted to a large area of agar plate for planting and counting method to be more accurate. In order to verify results of an experiment for statically, t-test should be done. In anlaysis processi t-test result was found 1.37x 10-15 which can be concluded that the hypothesis is proven to be correct and fat concentration in milk effect bacteria reproduction.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | SUPERVISOR NAME: Gonca ESENDEMİR, IB Notu: D |
| Uncontrolled Keywords: | fat concentration,bacteria reproduction, milk |
| Subjects: | Q Science > QH Natural history > QH301 Biology |
| Depositing User: | Kamil Çömlekçi |
| Date Deposited: | 26 Aug 2015 07:29 |
| Last Modified: | 26 Aug 2015 07:29 |
| URI: | http://tedprints.tedankara.k12.tr/id/eprint/648 |
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