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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제30권 제3호
- 발행연도
- 2020.1
- 수록면
- 404 - 416 (13page)
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초록· 키워드
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Bacteria that are resistant to high temperatures and alkaline environments are essential for the biological repair of damaged concrete. Alkaliphilic and halotolerant Bacillus sp. AK13 was isolated from the rhizosphere of Miscanthus sacchariflorus. Unlike other tested Bacillus species, the AK13 strain grows at pH 13 and withstands 11% (w/v) NaCl. Growth of the AK13 strain at elevated pH without urea promoted calcium carbonate (CaCO3) formation. Irregular vateritelike CaCO3 minerals that were tightly attached to cells were observed using field-emission scanning electron microscopy. Energy-dispersive X-ray spectrometry, confocal laser scanning microscopy, and X-ray diffraction analyses confirmed the presence of CaCO3 around the cell. Isotope ration mass spectrometry analysis confirmed that the majority of CO3 2- ions in the CaCO3 were produced by cellular respiration rather than being derived from atmospheric carbon dioxide. The minerals produced from calcium acetate-added growth medium formed smaller crystals than those formed in calcium lactate-added medium. Strain AK13 appears to heal cracks on mortar specimens when applied as a pelletized spore powder. Alkaliphilic Bacillus sp. AK13 is a promising candidate for self-healing agents in concrete.
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등록된 정보가 없습니다.
참고문헌 (45)
참고문헌 신청
Falkowski PG / 2008 / The microbial engines that drive Earth’s biogeochemical cycles / Science 320:1034~1039
Lee YS / 2019 / Enhanced calcium carbonate-biofilm complex formation by alkali-generating Lysinibacillus boronitolerans YS11 and alkaliphilic Bacillus sp. AK13 / AMB Express 9:49
De Muynck W / 2010 / Microbial carbonate precipitation in construction materials : a review / Ecol. Eng 36:118~136
Banks ED / 2010 / Bacterial calcium carbonate precipitation in cave environments : a function of calcium homeostasis / Geomicrobiol. J 27:444~454
Gat D / 2016 / Soil bacteria population dynamics following stimulation for ureolytic microbialinduced CaCO3 precipitation / Environ. Sci. Technol 50:616~624
Lee YS / 2019 / Enhanced calcium carbonate-biofilm complex formation by alkali-generating Lysinibacillus boronitolerans YS11 and alkaliphilic Bacillus sp. AK13 / AMB Express 9:49
De Muynck W / 2010 / Microbial carbonate precipitation in construction materials : a review / Ecol. Eng 36:118~136
Banks ED / 2010 / Bacterial calcium carbonate precipitation in cave environments : a function of calcium homeostasis / Geomicrobiol. J 27:444~454
Gat D / 2016 / Soil bacteria population dynamics following stimulation for ureolytic microbialinduced CaCO3 precipitation / Environ. Sci. Technol 50:616~624
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