The 50.0% reduction in BOD, 10.6% in COD, 74.3% and 1.5% in
organic carbon and ash content in the digestate when compared
to the feedstock could be traced to the biodegradation of the
organic matter in the substrate due to the activities of mesophilic
microorganisms and the high initial C/N ratio of the feedstock
(Yun et al., 2000)