Characterisation of CaCO₃ phases during strain-specific ureolytic precipitation.

ABSTRACT: Numerous microbial species can selectively precipitate mineral carbonates with enhanced mechanical properties, however, understanding exactly how they achieve this control represents a major challenge in the field of biomineralisation. We have studied microbial induced calcium carbonate (CaCO₃) precipitation (MICP) in three ureolytic bacterial strains from the Sporosarcina family, including S. newyorkensis, a newly isolated microbe from the deep sea. We find that the interplay between structural water and strain-specific amino acid groups is fundamental to the stabilisation of vaterite and that, under the same conditions, different isolates yield distinctly different polymorphs. The latter is found to be associated with different urease activities and, consequently, precipitatio

SUBMITTER: Clara Saracho A 

PROVIDER: S-EPMC7311398 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature