FIG 1.

Growth of Caldicellulosiruptor species on cellulose and unpretreated switchgrass. (A) Growth of species on 5 g/liter of cellulose (Avi) or 5 g/liter of unpretreated switchgrass (SWG). The arrow indicates the 7-day harvest point for solubilization assay and carbon balance determination. (B) Extent of solubilization of cellulose and switchgrass. (C) Switchgrass composition before and after degradation by Caldicellulosiruptor species. Solubilization and switchgrass composition values are means ± standard deviations (n = 3). Cbes, C. bescii; Ckro, C. kronotskyensis; Csac, C. saccharolyticus.