Your browser doesn't support javascript.
loading
Biomineralization of a calcifying ureolytic bacterium Microbacterium sp. GM-1
Xu, Guojing; Li, Dongwei; Jiao, Binquan; Li, Dou; Yin, Yajie; Lun, Limei; Zhao, Ziqiang; Li, Shan.
  • Xu, Guojing; Chongqing University. State Key Laboratory of Coal Mine Disaster Dynamics and Control. Chongqing. CN
  • Li, Dongwei; Chongqing University. State Key Laboratory of Coal Mine Disaster Dynamics and Control. Chongqing. CN
  • Jiao, Binquan; Chongqing University. State Key Laboratory of Coal Mine Disaster Dynamics and Control. Chongqing. CN
  • Li, Dou; Yuanda Environmental-Protection Engineering CO., LTD. Yuanda Group CPI. Chongqing. CN
  • Yin, Yajie; Chinese Academy of Sciences. Chongqing Institute of Green and Intelligent Technology. Chongqing. CN
  • Lun, Limei; Chongqing University. State Key Laboratory of Coal Mine Disaster Dynamics and Control. Chongqing. CN
  • Zhao, Ziqiang; Chongqing University. State Key Laboratory of Coal Mine Disaster Dynamics and Control. Chongqing. CN
  • Li, Shan; Chongqing University. State Key Laboratory of Coal Mine Disaster Dynamics and Control. Chongqing. CN
Electron. j. biotechnol ; 25: 21-27, ene. 2017. ilus, graf, tab
Article in English | LILACS | ID: biblio-1008381
ABSTRACT

Background:

Biomineralization is a significant process performed by living organisms in which minerals are produced through the hardening of biological tissues. Herein, we focus on calcium carbonate precipitation, as part of biomineralization, to be used in applications for environmental protection, material technology, and other fields. A strain GM-1, Microbacterium sp. GM-1, isolated from active sludge, was investigated for its ability to produce urease and induce calcium carbonate precipitation in a metabolic process.

Results:

It was discovered that Microbacterium sp. GM-1 resisted high concentrations of urea up to 60 g/L. In order to optimize the calcification process of Microbacterium sp. GM-1, the concentrations of Ni2+ and urea, pH value, and culture time were analyzed through orthogonal tests. The favored calcite precipitation culture conditions were as follows the concentration of Ni2+ and urea were 50 µM and 60 g/L, respectively, pH of 10, and culture time of 96 h. Using X-ray diffraction analysis, the calcium carbonate polymorphs produced by Microbacterium sp. GM-1 were proven to be mainly calcite.

Conclusions:

The results of this research provide evidence that Microbacterium sp. GM-1 can biologically induce calcification and suggest that strain GM-1 may play a potential role in the synthesis of new biominerals and in bioremediation or biorecovery.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Actinobacteria / Biomineralization Language: English Journal: Electron. j. biotechnol Journal subject: Biotechnology Year: 2017 Type: Article / Project document Affiliation country: China Institution/Affiliation country: Chinese Academy of Sciences/CN / Chongqing University/CN / Yuanda Environmental-Protection Engineering CO., LTD/CN

Similar

MEDLINE

...
LILACS

LIS


Full text: Available Index: LILACS (Americas) Main subject: Actinobacteria / Biomineralization Language: English Journal: Electron. j. biotechnol Journal subject: Biotechnology Year: 2017 Type: Article / Project document Affiliation country: China Institution/Affiliation country: Chinese Academy of Sciences/CN / Chongqing University/CN / Yuanda Environmental-Protection Engineering CO., LTD/CN