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SHR Neuro Cancer Cardio Lipid Metab Microb

Liu, X; Zarfel, G; van, der, Weijden, R; Loiskandl, W; Bitschnau, B; Dinkla, IJT; Fuchs, EC; Paulitsch-Fuchs, AH.
Density-dependent microbial calcium carbonate precipitation by drinking water bacteria via amino acid metabolism and biosorption.
Water Res. 2021; 202:117444 Doi: 10.1016/j.watres.2021.117444 [OPEN ACCESS]
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Co-authors Med Uni Graz: Paulitsch-Fuchs Astrid Helga; Zarfel Gernot
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Abstract:: Drinking water plumbing systems appear to be a unique environment for microorganisms as they contain few nutrients but a high mineral concentration. Interactions between mineral content and bacteria, such as microbial calcium carbonate precipitation (MCP) however, has not yet attracted too much attention in drinking water sector. This study aims to carefully examine MCP behavior of two drinking water bacteria species, which may potentially link scaling and biofouling processes in drinking water distribution systems. Evidence from cell density evolution, chemical parameters, and microscopy suggest that drinking water isolates can mediate CaCO₃ precipitation through previously overlooked MCP mechanisms like ammonification or biosorption. The results also illustrate the active control of bacteria on the MCP process, as the calcium starts to concentrate onto cell surfaces only after reaching a certain cell density, even though the cell surfaces are shown to be the ideal location for the CaCO₃ nucleation.
Find related publications in this database (using NLM MeSH Indexing): Amino Acids - administration & dosage; Bacteria - administration & dosage; Biofilms - administration & dosage; Calcium Carbonate - administration & dosage; Drinking Water - administration & dosage
Find related publications in this database (Keywords): MCP; DWDS; Biofilm; Scale; Drinking water bacteria; Opportunistic pathogen