Decontamination of radioactive cesium by intestinal and probiotic bacteria

2016 Fiscal Year Final Research Report

• Project/Area Number: 26660053
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Applied microbiology
• Research Institution: Tohoku University
• Principal Investigator: Isogai Emiko 東北大学, 農学研究科, 教授 (80113570)
• Co-Investigator(Renkei-kenkyūsha): NISHIMURA JYUNNKO 八戸工業大学, 大学院工学研究科, 教授 (10241556)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 放射性セシウム / 腸内フローラ / プロバイオテック細菌 / 福島原発事故 / 生体除染 / カリウム

Outline of Final Research Achievements

Large amounts of radioactive materials emitted by the Fukushima Daiichi nuclear power plant (FNPP) accident in March 2011 have led to a heavy environmental pollution.
GE gamma-ray spectrometry detected peaks from Cs-134 and Cs-137 in the organs and fecal samples of cattle.　The concentration of radioactive Cs was high in the fecal samples. It was considered that the intestinal bacteria could uptake and eliminate radioactive Cs. Actually, uptake % ranged from 38 to 81　in various intestinal bacteria. Although we tried uptake of radioactive Cs by probiotic bacteria, the uptake % is low. The difference between intestinal bacteria and probiotic bacteria was based on the assay medium. Our result suggested that K inhibit the uptake of radioactive Cs.

Free Research Field

動物微生物学