Fig. 6From: Protein hydrolysis and fermentation under methanogenic and acidifying conditionsAnaerobic conversion of gelatine-COD to amino acids and peptides-, VFAs- and CH4-COD in gelatine-pH 7 (a), gelatine-BES-pH 7 (b) and gelatine-pH 5 (c) in the anaerobic batch experiment at 35 °C. Data expressed as mean value (n = 3, with standard deviation less than 5%). Gelatine ( ), amino acids and peptides ( ), VFAs ( ), CH4 ( ), missing-COD (open square)Back to article page