Hannah Halm
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Hannah Halm has a total of 7 co-authors. Here are the top co-authors by number of shared publications:
- Charlotte Schröder
Department of Experimental Animal Facilities and Biorisk Management, Friedrich-Loeffler-Institut, Südufer 10, 17493 Greifswald, Insel Riems, Germany
1 shared publication - Hendrik A. Scheinemann
Department of Experimental Animal Facilities and Biorisk Management, Friedrich-Loeffler-Institut
1 shared publication - Ines Lehnert
Department of Livestock Infectiology and Environmental Hygiene, Institute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany
1 shared publication - Ludwig Eduard Hoelzle
Department of Livestock Infectiology and Environmental Hygiene, Institute of Animal Science, University of Hohenheim, 70593 Stuttgart, Germany
1 shared publication - Sören Woelke
Friedrich-Loeffler-Institute, Federal Research Institute for Animal Health, Riems, 17493 Greifswald, Germany
1 shared publication - Thorben Schilling
Department of Livestock Infectiology and Environmental Hygiene, Institute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany
1 shared publication
Latest Publications
- Open Access
- 22 August 2025
- Published by MDPI AG in Applied Microbiology
- Vol. 5 (3) , 88
Lactic Acid Fermentation Inactivates Salmonella Typhimurium in Contaminated Cattle Manure at Moderate and Low Temperatures
In the case of a notifiable animal disease like salmonellosis, manure is contaminated and must be disinfected. This can be performed using heat measures, chemical disinfectants, or long-term storage. All these measures bring along severe economic, ecological, and logistical problems. The aim of this study was to evaluate lactic acid fermentation (LAF) as an alternative disinfection method. Fermentation was started by adding a carbohydrate source to the manure and creating anaerobic conditions. For testing, cattle manure was enriched with different carbohydrate (CHO) sources and spiked with Salmonella Typhimurium (S. Ty.). The samples were incubated at 10 °C and 21 °C for 111 days (Exp1) and at 21 °C for 50 days (Exp2). The microbial shift was determined using cultural methods and MALDI-TOF. Both the change in pH and Enterococcus spp. were tested as suitable indicators. The results showed the different suitability of the selected CHO for hygienization by LAF. Using squeezed oat as an additive, S. Ty was reduced to below the detection limit under both temperature conditions within 21 days and 14 days. Additional saccharose decreased the reduction time. This study showed that LAF is a valuable alternative for disinfecting cattle manure in the case of bovine salmonellosis. Using this method, both manure and feed residues can be treated in one approach and afterwards be used as fertilizer.
- 22 August 2025
- Published by MDPI AG in Applied Microbiology
- Vol. 5 (3) , 88
Open AccessLactic Acid Fermentation Inactivates Salmonella Typhimurium in Contaminated Cattle Manure at Moderate and Low Temperatures
In the case of a notifiable animal disease like salmonellosis, manure is contaminated and must be disinfected. This can be performed using heat measures, chemical disinfectants, or long-term storage. All these measures bring along severe economic, ecological, and logistical problems. The aim of this study was to evaluate lactic acid fermentation (LAF) as an alternative disinfection method. Fermentation was started by adding a carbohydrate source to the manure and creating anaerobic conditions. For testing, cattle manure was enriched with different carbohydrate (CHO) sources and spiked with Salmonella Typhimurium (S. Ty.). The samples were incubated at 10 °C and 21 °C for 111 days (Exp1) and at 21 °C for 50 days (Exp2). The microbial shift was determined using cultural methods and MALDI-TOF. Both the change in pH and Enterococcus spp. were tested as suitable indicators. The results showed the different suitability of the selected CHO for hygienization by LAF. Using squeezed oat as an additive, S. Ty was reduced to below the detection limit under both temperature conditions within 21 days and 14 days. Additional saccharose decreased the reduction time. This study showed that LAF is a valuable alternative for disinfecting cattle manure in the case of bovine salmonellosis. Using this method, both manure and feed residues can be treated in one approach and afterwards be used as fertilizer.