Abstract
The qualitative and quantitative changes in the bacterial community composition in two mesophilic, commercially used biogas plants were monitored by denaturing gradient gel electrophoresis (DGGE) and real-time PCR. The main objective was to evaluate the influence of the co-substrate maize silage on total bacteria and some selected bacterial groups by comparing full-scale reactors fed solely with pig manure or additionally with maize silage. DGGE fingerprints reflected shifts in the bacterial community structure associated with maize silage as co-substrate and the real-time PCR results showed clear changes in the quantitative composition of the bacterial consortia of each fermenter. A clear dominance of Clostridia in all surveyed fermenters and considerably lower abundance of Bacteroidetes in the biogas plant fed with maize silage was shown.
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This research was supported by the National Agency for Agricultural Research of the Ministry of Agriculture of Czech Republic (project no. QI92A286) and Czech Science Foundation (project no. P503/10/P394).
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Fliegerová, K., Mrázek, J., Kajan, M. et al. The effect of maize silage as co-substrate for swine manure on the bacterial community structure in biogas plants. Folia Microbiol 57, 281–284 (2012). https://doi.org/10.1007/s12223-012-0125-6
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DOI: https://doi.org/10.1007/s12223-012-0125-6