Complex polymers A noXIc Cellulose other polysaccharides proteins Cellulolytic and Decomposition other hydrolytic Hydrolysis Various groups of Monomers Sugars. fermentative amino acds Fermentative Fermentation bactera anaerobes act Propionate together in the Butyrate H+ cO Succinate conversion of Reproducing Aceto atty.acid anIc acetogensgenesis Fermentation complex orga bacteria (syntrophs) Methano Acetate materials ultimately cate to methane and co2 Methanogenesis CHaAnoxic Decomposition Various groups of fermentative anaerobes act together in the conversion of complex organic materials ultimately to methane and CO2