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Characterization of bacterial community dynamics during the decomposition of pig carcasses in simulated soil burial and composting systems

Title
Characterization of bacterial community dynamics during the decomposition of pig carcasses in simulated soil burial and composting systems
Authors
Ki B.-M.Kim Y.M.Jeon J.M.Ryu H.W.Cho K.-S.
Ewha Authors
조경숙
SCOPUS Author ID
조경숙scopus
Issue Date
2017
Journal Title
Journal of Microbiology and Biotechnology
ISSN
1017-7825JCR Link
Citation
vol. 27, no. 12, pp. 2199 - 2210
Keywords
Bacterial community dynamicsCompostingPig carcass disposalSampling deviceSoil burial
Publisher
Korean Society for Microbiolog and Biotechnology
Indexed
SCIE; SCOPUS; KCI scopus
Abstract
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.
DOI
10.4014/jmb.1709.09032
Appears in Collections:
엘텍공과대학 > 환경공학전공 > Journal papers
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