Characterization of bacterial community dynamics during the decomposition of pig carcasses in simulated soil burial and composting systems
- 주제(키워드) Bacterial community dynamics , Composting , Pig carcass disposal , Sampling device , Soil burial
- 등재 SCIE, SCOPUS, KCI등재
- 발행기관 Korean Society for Microbiolog and Biotechnology
- 발행년도 2017
- URI http://www.dcollection.net/handler/ewha/000000150163
- 본문언어 영어
- Published As http://dx.doi.org/10.4014/jmb.1709.09032
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
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. © 2017 by The Korean Society for Microbiology and Biotechnology.
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