Fig. 3

Carbohydrate solubilization by C. thermocellum (circles) or SSF (diamonds). Solubilization of uninoculated controls was less than 10 %. Results are expressed as mean ± SD (n ≥ 2). a Washed Cave in Rock switchgrass harvested in June. b Washed Cave in Rock switchgrass harvested in April (filled circle, diamond) or washed Alamo switchgrass harvested in October (circle, filled diamond). c Washed Populus