ELECTRON-TRANSPORT SYSTEM ACTIVITY IN SULFATE-REDUCING BACTERIA

The potential of electron transport system (ETS) activity measurement method with regard to two anaerobic bacteria namely Desulfovibrio desu lfuricans and Desulfovibrio vulgaris was studied. Both the species red uced 2-(p-iodophenyl)-3-(p-nitrophenyl)-5-phenyl tetrazolium chloride (INT) to INT formazon. Laboratory experiments indicated that 20 minute s treatment of INT was adequate to give optimum ETS values. The study showed that ETS activity varied from species to species and age of the culture. ETS activity was found to be varying in media with different composition.