Clostridium.
Several species of Thermoanaerobacterium have been studied for the production of different bioproducts. Among them, T. thermosaccharolyticum seems to be the most promising, and different strains have been analyzed as candidates for the production of hydrogen (Cao et al., 2009, 2014), ethanol (Bhandiwad et al., 2013, 2014; Jiang, Guo, et al., 2018; Li et al., 2018) and 1,2 propanediol (Altaras, Etzel, & Cameron, 2001; Cameron & Cooney, 1986) from several carbon sources, including lignocellulosic biomass. Knowledge on their physiology and unique metabolic properties will enable the use of these microorganisms to obtain biotechnologically relevant bioproducts in sustainable and environmentally friendly processes.