Fig. 8
From: Inhibition of microbial biofuel production in drought-stressed switchgrass hydrolysate
Imidazoles and pyrazines found in drought-year AFEX-treated switchgrass hydrolysate (ASGH) can impair anaerobic yeast growth. Anaerobic yeast growth in add-back experiment, with various concentrations of pyrazines and imidazoles (P/I) in 2010 ASGH relative to estimated levels in 2012 ASGH (mean, n = 3). Average cell densities with standard error of the mean are reported from triplicate samples, with every twelfth time point plotted (roughly one time point every 2 h)