Characterization of Bacterial Community Dynamics during the Decomposition of Pig Carcasses in Simulated Soil Burial and Composting Systems
| Autor: | Bo Min Ki, Jun Min Jeon, Kyung Suk Cho, Yu Mi Kim, Hee Wook Ryu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
food.ingredient
Meat Swine 020209 energy Microbial Consortia 02 engineering and technology 010501 environmental sciences engineering.material complex mixtures 01 natural sciences Applied Microbiology and Biotechnology food 0202 electrical engineering electronic engineering information engineering Animals Soil Microbiology 0105 earth and related environmental sciences biology Bacteria Compost Brevundimonas Composting fungi Chemical process of decomposition Pelotomaculum High-Throughput Nucleotide Sequencing General Medicine biology.organism_classification Pulp and paper industry Decomposition Halophile Manure engineering Pyrosequencing Environmental science Abattoirs Biotechnology |
| Zdroj: | Journal of microbiology and biotechnology. 27(12) |
| ISSN: | 1738-8872 |
| Popis: | Soil burial is the most widely used disposal method for infected pig carcasses, but composting has gained attention as an alternative disposal method because pig carcasses can be decomposed rapidly and safely by composting. To understand the pig carcass decomposition process in soil burial and by composting, pilot-scale test systems that simulated soil burial and composting were designed and constructed in the field. The envelope material samples were collected using special sampling devices without disturbance, and bacterial community dynamics were analyzed by high-throughput pyrosequencing for 340 days. Based on the odor gas intensity profiles, it was estimated that the active and advanced decay stages were reached earlier by composting than by soil burial. The dominant bacterial communities in the soil were aerobic and/or facultatively anaerobic gram-negative bacteria such as Pseudomonas, Gelidibacter, Mucilaginibacter, and Brevundimonas. However, the dominant bacteria in the composting system were anaerobic, thermophilic, endospore-forming, and/or halophilic gram-positive bacteria such as Pelotomaculum, Lentibacillus, Clostridium, and Caldicoprobacter. Different dominant bacteria played important roles in the decomposition of pig carcasses in the soil and compost. This study provides useful comparative date for the degradation of pig carcasses in the soil burial and composting systems. |
| Databáze: | OpenAIRE |
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