Fig. 1
From: Protein hydrolysis and fermentation under methanogenic and acidifying conditions
First-order model for hydrolyzed and acidified gelatine concentrations in gelatine-pH7 (a) and gelatine-BES-pH7 (b) in the batch experiment at 35 °C. (Data plotted the mean and standard deviation). Decrease of protein (filled circle), VFA and CH4 (open square), first-order model (continuous line)