Preživljavanje bakterije Acinetobacter baumanni u različitim uzorcima tala

master's thesis

• Title: Preživljavanje bakterije Acinetobacter baumanni u različitim uzorcima tala : diplomski rad
• Title (english): Survival of Acinetobacter baumannii bacterium in various soil samples : master’s thesis
• Author: Kristina Ćorak
• Mentor: Goran Durn (mentor)
• Committee member: Goran Durn (predsjednik povjerenstva)
• Committee member: Jasna Hrenović (član povjerenstva)
• Committee member: Ivan Sondi (član povjerenstva)
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Mineralogy, Petrology and Mineral Resources); Zagreb
• Defense date and country: 2018-02-22, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Geology and Paleontology

Abstract

Bakterija A. baumannii je emergentni humani patogen koji uzrokuje bolničke i sporadične
infekcije. Cilj rada bio je ispitati preživljavanje bakterije A. baumannii u uzorcima tala različite pH
vrijednosti: paleotlu (pH 2.99), crvenici 5410 (pH 5,79) i crvenici 4908 (pH 7,56) u usporedbi s
prirodnom izvorskom vodom kao pozitivnom kontrolom. U prirodnoj izvorskoj vodi broj vijabilnih
A. baumannii bio je konstantan sa stopom preživljavanja 91 % nakon 50 dana. U paleotlu, 6 %
bakterija je preživjelo samo jedan dan zbog kiselog pH. U crvenici 5410 zabilježen je mali pad
broja bakterija sa stopom preživljavanja 86 % nakon 50 dana. U crvenici 4908 zabilježen je najveći
broj bakterija sa stopom preživljavanja 92% nakon 50 dana. Neznatne razlike preživljavanja u
crvenici 4908 u usporedbi s kontrolom ukazuju da crvenica nije sadržavala organske tvari koje bi
pogodovale razmnožavanju bakterija tijekom 50 dana. Vrijednost pH tla glavni je čimbenik koji
određuje preživljavanje A. baumannii u tlu.

Abstract (english)

The A. baumannii bacterium is an emergent human pathogen, causing hospital and sporadic
infections. The aim of this thesis was to test the survival rate of the A. baumannii bacterium in soil
samples, that have different pH values: paleosol (pH 2.99), Terra rosa 5410 (pH 5,79) and Terra
rosa 4908 (pH 7,56) compared to natural spring water as positive control. In natural water source
the number of viable A. baumannii was constant with the survival rate of 91% after 50 days. In
paleosol, 6% of bacteria have lived only one day because of acidic pH. In the Terra Rossa 5410 the
test has shown a small decrease in bacterial count with the survival rate of 86% after 50 days. The
Terra Rossa 4908 sample had the highest number of bacteria with a survival rate of 92% after 50
days. Insignificant differences in survival in the Terra Rossa 4908 soil in comparison with the
control indicate that the Terra Rossa 4908 did not contain organic substances that would favor
bacterial replication for 50 days. The main factor that determines the survival of A. baumannii in
the soil is the pH value.

• Keywords: A. baumannii; bakterije; crvenica; paleotlo; pH vrijednost; Istra
• Keywords (english): A. baumanni bacterium; terra rossa; paleosol; pH value; Istria
• Language: croatian
• URN:NBN: urn:nbn:hr:169:203968
• Study programme: Title: Geology; specializations in: Geology of mineral resources and geophysical explorations; Course: Geology of mineral resources and geophysical explorations; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra geologije (magistar/magistra geologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2018-07-20 12:15:17