Fig. 1From: Water-soluble saponins accumulate in drought-stressed switchgrass and may inhibit yeast growth during bioethanol productionYeast inhibitors produced in drought-stressed switchgrass were extracted using different solvents before and after pretreatment to trace the source of inhibitor generation, i.e., if the inhibitor(s) is a plant-defense compound or a by product of the pretreatment method. The flowchart was created using BiorenderBack to article page