Growth media provides the microbes with all essential nutrients such as minerals, trace elements, vitamins, and reducing agents for their maximal growth. The selection of the growth media depends on the selected species and the targeted end products. Reducing agents (e. g., sodium thioglycolate, ascorbic acid, and benzyl-viologen) result in shift in the electron flow, thereby diverting the carbon flow from acid to alcohol production (Klasson et al., 1992). Researchers have developed their own protocols for media preparation, while some specific media are provided by American Type Culture Collection (ATCC) (e. g., ATCC culture 1754 for C. Ijungdahlii, acetobacterium medium ATCC 1019).