Three kinds of autotrophic bioleaching bacteria strains,including mesophilic and acidophilic ferrous ion-oxidizing bacteria Acidithiobacillus ferrooxidans(A.ferrooxidans),mesophilic and acidophilic sulfur-oxidizing ba...Three kinds of autotrophic bioleaching bacteria strains,including mesophilic and acidophilic ferrous ion-oxidizing bacteria Acidithiobacillus ferrooxidans(A.ferrooxidans),mesophilic and acidophilic sulfur-oxidizing bacteria Acidithiobacillus thiooxidans(A.thiooxidans),and moderately thermophilic sulfur-oxidizing bacteria.4cidianus brierleyi,were cryopreserved in liquid nitrogen and their ferrous ion-or sulfur-oxidizing activities were investigated and compared with the original ones.The results revealed that ferrous ion/sulfur oxidation activities of the strains were almost equal before and after cryopreservation.Glycerin was used as cryoprotective agent.In conclusion,liquid-nitrogen cryopreservation is a simple and effective method for autotrophic bioleaching microorganisms.展开更多
基金Project (51774342) supported by the National Natural Science Foundation of ChinaProject (2016RS2016) supproted by the Hunan Provincial Science and Technology Leader (Innovation Team of Interface Chemistry of Efficient and Clean Utilization of Complex Mineral Resources),China
基金Project(50621063)supported by Chinese Science Foundation for Distinguished GroupProject(2004CB619201)supported by the National Basic Research Program of China
文摘Three kinds of autotrophic bioleaching bacteria strains,including mesophilic and acidophilic ferrous ion-oxidizing bacteria Acidithiobacillus ferrooxidans(A.ferrooxidans),mesophilic and acidophilic sulfur-oxidizing bacteria Acidithiobacillus thiooxidans(A.thiooxidans),and moderately thermophilic sulfur-oxidizing bacteria.4cidianus brierleyi,were cryopreserved in liquid nitrogen and their ferrous ion-or sulfur-oxidizing activities were investigated and compared with the original ones.The results revealed that ferrous ion/sulfur oxidation activities of the strains were almost equal before and after cryopreservation.Glycerin was used as cryoprotective agent.In conclusion,liquid-nitrogen cryopreservation is a simple and effective method for autotrophic bioleaching microorganisms.