Ağmış, Cemre (2012) Comparing the antibacterial effect of Chichorium intybus and Urtica dioica on Staphylococcus aureus as gram positive bacterium and Escherichia coli as gram negative bacterium. Other thesis, TED Ankara College Foundation High School.
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Abstract
People use antibacterial medicines to defend themselves against bacterial diseases. However as these synthetic medicines may have harmful and unexpected effects on human health, people prefer using herbal medicines instead of synthetic medicines. Depending on this fact I defined my research question as; “How does the antibacterial effect of Chichorium intybus and Urtica dioica change on Staphylococcus aureus as gram positive bacterium and Escherichia coli as gram negative bacterium?”. There are lots of studies about antibacterial effect, but I did not run into studies about antibacterial effects of different plants on gram positive and gram negative bacteria. So, the aim of this study is comparing the antibacterial effect of two different plants (Chichorium intybus and Urtica dioica) on gram positive (Staphylococcus aureus) and gram negative (Escherichia coli) bacterium and it was hypothesized that, “Chichorium intybus and Urtica dioica both have significant antibacterial effect on both gram positive and gram negative types of bacteria.” In this experiment, antibacterial effect of plants (Chichorium intybus and Urtica dioica) on gram positive and gram negative bacteria (Staphylococcus aureus and Escherichia coli) is measured by preparing Mueller - Hinton Agar and Whatman No. 1 filter paper which is absorbed with plant extracts and their inhibition zones are measured. For Staphylococcus aureus, Chichorium intybus gives 11.0mm average inhibition zone radius and Urtica dioica gives 9.1mm average inhibition zone radius. For Escherichia coli, Chichorium intybus gives 9.1mm average inhibition zone radius and Urtica dioica gives 9.2mm average inhibition zone radius. For evaluating these results, t-test is made and p value of effect on Escherichia coli is bigger than 0.05 so there are no significant differences between antibacterial effects of these two plants, p value of effect on Staphylococcus aureus is smaller than 0.05 so the null hypothesis is rejected and hypothesis is accepted according to this study.
| Item Type: | Thesis (Other) |
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| Additional Information: | Supervisor: Hatice Özmen, IB Notu: C |
| Uncontrolled Keywords: | antibacterial medicines,herbal medicines, antibacterial effect |
| Subjects: | Q Science > QH Natural history > QH301 Biology |
| Depositing User: | Kamil Çömlekçi |
| Date Deposited: | 09 Jul 2012 12:02 |
| Last Modified: | 12 Apr 2019 08:54 |
| URI: | http://tedprints.tedankara.k12.tr/id/eprint/231 |
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