奥奈达希瓦氏菌MR-1葡萄糖利用突变株驯化、筛选及其产电性能研究

Shewanella oneidensis MR-1 is a model exoelectrogenic microorganism. Glucose is generally considered as a common and abundant electron donor in nature. S. Oneidensis MR-1 was reported to be unable to use glucose to grow, which limiting its use in the glucose feeding MFC. In this study, glucose was used as a substrate to domesticate S. oneidensis MR-1. And mutants capable of glucose utilization were sceened out. Then, the electrochemical performance of these mutants were investigated in glucose feeding MFCs. The results showed that domesticated mutants can use glucose to grow and generate electricity. When the glucose concentration reached 5g/L in MFC, the optimal output voltage of the mutant-inoculated MFC is up to 424.7 mV and its power density reached 137.3 mW/m2, which is 4.2 folds and 19.1 folds of that obtained from MFC inoculated with the wild-type strain, respectively.