PMID- 35630407 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230916 IS - 2076-2607 (Print) IS - 2076-2607 (Electronic) IS - 2076-2607 (Linking) VI - 10 IP - 5 DP - 2022 May 3 TI - Biocalcifying Potential of Ureolytic Bacteria Isolated from Soil for Biocementation and Material Crack Repair. LID - 10.3390/microorganisms10050963 [doi] LID - 963 AB - Microbially induced calcium carbonate precipitation (MICP) has been highlighted for its application in civil engineering, and in the environmental and geotechnical fields. Ureolytic activity is one of the most promising bacterial mechanisms in terms of inducing calcium carbonate formation. In this study, four bacterial isolates with high-yield urease production capabilities were obtained from two-step screening using a high-buffered urea medium. The highest urease activity and calcium carbonate formation was observed in Lysinibacillus fusiformis 5.1 with 4.40 x 10(3) unit/L of urease and 24.15 mg/mL of calcium carbonate, followed by Lysinibacillus xylanilyticus 4.3 with 3.93 x 10(3) unit/L of urease and 22.85 mg/mL of calcium carbonate. The microstructure of the precipitated crystalline calcium carbonate was observed using scanning electron microscopy. X-ray diffraction analysis confirmed that the main polymorph of the calcium carbonate particle obtained from both isolates was calcite. Examination of the material-crack filling in mortar specimens showed that calcite layers had formed along the crack edges and inside after 10 days, and gradually filled the cracks up to the upper surface. These results showed that these two isolates presented robust characteristics of potential MICP-inducing bacteria for civil engineering and material engineering applications. FAU - Leeprasert, Laxmi AU - Leeprasert L AD - Department of Microbiology, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand. FAU - Chonudomkul, Duenrut AU - Chonudomkul D AD - Department of Microbiology, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand. AD - Biodiversity Center Kasetsart University (BDCKU), Bangkok 10900, Thailand. FAU - Boonmak, Chanita AU - Boonmak C AD - Department of Microbiology, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand. AD - Biodiversity Center Kasetsart University (BDCKU), Bangkok 10900, Thailand. LA - eng GR - FF(KU)18.64/Kasetsart University Research and Development Institute (KURDI)/ PT - Journal Article DEP - 20220503 PL - Switzerland TA - Microorganisms JT - Microorganisms JID - 101625893 PMC - PMC9143465 OTO - NOTNLM OT - MICP OT - calcite OT - urease OT - ureolytic bacteria COIS- The authors declare that there are no conflict of interest. EDAT- 2022/05/29 06:00 MHDA- 2022/05/29 06:01 PMCR- 2022/05/03 CRDT- 2022/05/28 01:33 PHST- 2022/04/07 00:00 [received] PHST- 2022/04/30 00:00 [revised] PHST- 2022/05/01 00:00 [accepted] PHST- 2022/05/28 01:33 [entrez] PHST- 2022/05/29 06:00 [pubmed] PHST- 2022/05/29 06:01 [medline] PHST- 2022/05/03 00:00 [pmc-release] AID - microorganisms10050963 [pii] AID - microorganisms-10-00963 [pii] AID - 10.3390/microorganisms10050963 [doi] PST - epublish SO - Microorganisms. 2022 May 3;10(5):963. doi: 10.3390/microorganisms10050963.