Journal article

Publication year: 2014

Pages: 108-117

Journal: Bioresource Technology

Volume number: 174

ISSN: 0960-8524

eISSN: 1873-2976

DOI Link: https://doi.org/10.1016/j.biortech.2014.09.150

Publisher: Elsevier

Abstract: 
Two parallel, stable operating biogas reactors were fed with increasing amounts of maize silage to monitor microbial community changes caused by overloading. Changes of microorganisms diversity revealed by SSCP (single strand conformation polymorphism) indicating an acidification before and during the pH-value decrease. The earliest indicator was the appearance of a Methanosarcina thermophila-related species. Diversity of dominant fermenting bacteria within Bacteroidetes, Firmicutes and other Bacteria decreased upon overloading. Some species became dominant directly before and during acidification and thus could be suitable as possible indicator organisms for detection of futurity acidification. Those bacteria were related to Prolixibacter bellariivorans and Streptococcus infantarius subsp. infantarius. An early detection of community shifts will allow better feeding management for optimal biogas production. (C) 2014 Elsevier Ltd. All rights reserved.

Harvard Citation style: Kampmann, K., Ratering, S., Geissler-Plaum, R., Schmidt, M., Zerr, W. and Schnell, S. (2014) Changes of the microbial population structure in an overloaded fed-batch biogas reactor digesting maize silage, Bioresource Technology, 174, pp. 108-117. https://doi.org/10.1016/j.biortech.2014.09.150

APA Citation style: Kampmann, K., Ratering, S., Geissler-Plaum, R., Schmidt, M., Zerr, W., & Schnell, S. (2014). Changes of the microbial population structure in an overloaded fed-batch biogas reactor digesting maize silage. Bioresource Technology. 174, 108-117. https://doi.org/10.1016/j.biortech.2014.09.150