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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Production of magnetic particles by microorganisms
 Chvalkovská, Eva ; Mgr. Martina Mikešová, Ph.D. (roz. Pravečková) (referee) ; Trachtová, Štěpánka (advisor)
This thesis focuses on the magnetic nanoparticles produced by bacteria. These are two types of bacteria. First of them we can find in an industrial environment that produce magnetic nanoparticles using magnetosomes. Magnetosomes are units containing nanocrystals and are surrounded by a lipid layer. They are made up of chains and work as a compass. In this thesis I deal with possibilities of cultivation od these bacteria, acquisition of magnetosomes and subsequent processing. The second type is bacteria living in the human body, they start to produce magnetic nanoparticles after the addition of trigger, such as silver nitrate. Bakteria which can produce silver or ferrous nanoparticles are Bacillus sp, Escherichia coli, Lactobacillus casei ssp. casei and Lactobacillus fermentum. Experimental part of bachelor thesis focused on the production of silver nitrate in concetration of 0,1; 1; 2; 4 mM. The bacteria that have been shown to produce silver nanoparticles are Lactobacillus casei ssp. casei CCM 7088T a Lactobacillus casei ssp. casei CCM 7089 a Lactobacillus rhamnosus CCM 1825T.
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Production of magnetic particles by microorganisms
 Chvalkovská, Eva ; Mgr. Martina Mikešová, Ph.D. (roz. Pravečková) (referee) ; Trachtová, Štěpánka (advisor)
This thesis focuses on the magnetic nanoparticles produced by bacteria. These are two types of bacteria. First of them we can find in an industrial environment that produce magnetic nanoparticles using magnetosomes. Magnetosomes are units containing nanocrystals and are surrounded by a lipid layer. They are made up of chains and work as a compass. In this thesis I deal with possibilities of cultivation od these bacteria, acquisition of magnetosomes and subsequent processing. The second type is bacteria living in the human body, they start to produce magnetic nanoparticles after the addition of trigger, such as silver nitrate. Bakteria which can produce silver or ferrous nanoparticles are Bacillus sp, Escherichia coli, Lactobacillus casei ssp. casei and Lactobacillus fermentum. Experimental part of bachelor thesis focused on the production of silver nitrate in concetration of 0,1; 1; 2; 4 mM. The bacteria that have been shown to produce silver nanoparticles are Lactobacillus casei ssp. casei CCM 7088T a Lactobacillus casei ssp. casei CCM 7089 a Lactobacillus rhamnosus CCM 1825T.
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