SANITARY VALIDATION OF THE PROCESS OF ANAEROBIC DIGESTION OF SLURRY BASED ON THE SURVIVAL OF Salmonella SENFTENBERG (W775, H2S NEGATIVE) AND Ascaris suum EGGS
Journal Title: Acta Scientiarum Polonorum – Agricultura - Year 2016, Vol 15, Issue 4
Abstract
Abstract. The subject of this study was an assessment of the effectiveness of hygienization of pig slurry during the methane fermentation process. The basic criterion for evaluating the effectiveness of the process was the inactivation rate of Salmonella Senftenberg (W775, H2S negative) and the eggs of Ascaris suum. Bacteria suspensions were introduced into slurry inside microbiological carriers of the FILTER-SANDWICH type, while parasite eggs were in special perlon parasitological carriers. The obtained results indicate that during anaerobic digestion of slurry there occurred a rapid elimination of both Salmonella Senftenberg (W775, H2S negative) and Ascaris suum eggs. The shape of the regression line shows that the complete inactivation of Salmonella Senftenberg (W775, H2S negative) occurred between the 12th and 13th hour of the process. Ascaris suum eggs were completely eliminated after 4 hours. Study results suggest that even in the case of strong contamination of the feed material, the technology of anaerobic digestion guarantees obtaining a microbiologically safe product.
Authors and Affiliations
Zbigniew Paluszak, Krzysztof Skowron, Justyna Bauza-Kaszewska, Halina Olszewska, Magdalena Kroplewska
Keywords
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