Study of Colloidal Polysaccharides Produced by Iron Oxidizing BacteriaLeptospirillum ferriphilumCC
| Autor: | Hamlet Badalyan, Levon Markosyan, Narine Vardanyan, Arevik Vardanyan |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
endocrine system Leptospirillum ferriphilum 030106 microbiology chemistry.chemical_element 010501 environmental sciences Cell morphology Polysaccharide complex mixtures 01 natural sciences Microbiology 03 medical and health sciences Extracellular polymeric substance Iron bacteria Oxidizing agent Earth and Planetary Sciences (miscellaneous) Environmental Chemistry 0105 earth and related environmental sciences General Environmental Science chemistry.chemical_classification biology Chemistry digestive oral and skin physiology biology.organism_classification Sulfur Chemical engineering Bacteria |
| Zdroj: | Geomicrobiology Journal. 36:188-193 |
| ISSN: | 1521-0529 0149-0451 |
| DOI: | 10.1080/01490451.2018.1534903 |
| Popis: | Iron and sulfur oxidizing bacteria produce capsular and colloidal extracellular polymeric substances. The properties and functional role of capsular polysaccharides are well studied. However, colloidal polysaccharides produced by iron oxidizing bacteria have not been sufficiently explored. In this paper, the physical and chemical properties of colloidal polysaccharides produced by the iron oxidizing bacterial isolate Leptospirillum ferriphilum CC have been studied. Colloidal polysaccharides were extracted and further investigated by optical polarized microscopy and analytical programs (LobVIEW15 and NOVA) that allowed determining the size, changes in shape, perimeter, degree of hydration, and crystallization of polysaccharides. Computer modeling of the experimental data has revealed that polysaccharides concentration does not contribute to the size of colloids but influence the number of particles. |
| Databáze: | OpenAIRE |
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