Bio-mineralisation, characterization, and stability of calcium carbonate containing organic matter.

ABSTRACT: The composition of organic matter in biogenic calcium carbonate has long been a mystery, and its role has not received sufficient attention. This study is aimed at elucidating the bio-mineralisation and stability of amorphous calcium carbonate (ACC) and vaterite containing organic matter, as induced by Bacillus subtilis. The results showed that the bacteria could induce various structural forms of CaCO₃, such as biogenic ACC (BACC) or biogenic vaterite (BV), using the bacterial cells as their template, and the carbonic anhydrase secreted by the bacteria plays an important role in the mineralisation of CaCO₃. The effects of Ca²⁺ concentration on the crystal structure of CaCO₃ were ascertained; when the amount of CaCl₂ increased f

SUBMITTER: Liu R 

PROVIDER: S-EPMC8697732 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature