期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
卷号：4
期号：5
页码：2793
DOI：10.15680/IJIRSET.2015.0405020
出版社：S&S Publications
摘要：Biomineralization is an important and ubiquitous process resulting in biominerals, produced by a rangeof taxa, from bacteria and to eukarya. Calcium carbonate precipitation was reported in many bacterial species, both invivo and in vitro conditions which is influenced by various abiotic factors and could transform soluble organic nutrientsinto insoluble inorganic calcite crystals. Biologically controlled mineralization (BCM) of calcium carbonate involves aremarkable control in size, morphology and phase selection, resulting in complex hierarchical organic- inorganicstructures with unusual physicochemical properties. The calcium carbonate thus secreted can be used in variousapplications and as an additive admixture in building materials. In this study calcareous bacteria were isolated frommarine sediments, which were able to produce calcium carbonate crystals by utilizing organic and inorganic nitrogensource indicating the nitrogen and ureolytic cycle as their basic metabolic pathway. Characterisation studies wereperformed and the most efficient isolate was obtained.
