Fig. 2From: Protein hydrolysis and fermentation under methanogenic and acidifying conditionsThe depletion of gelatine concentration and hydrolysis rate at different periods, change of acidified gelatine concentrations and pH during incubation time at gelatine-pH 5 in the batch experiment at 35 °C. (Data plotted the mean and standard deviation). Decrease of protein (filled circle), VFAs and CH4 (open square) and pH (open triangle)Back to article page