title: Anaerobic degradation of pyrrolidine and piperidine coupled with nitrate reduction.
abstract: Biodegradability of secondary amines (pyrrolidine, piperidine, piperazine, morpholine, and thiomorpholine) under anaerobic conditions was examined in microbial consortia from six different environmental sites. The consortia degraded pyrrolidine and piperidine under denitrifying conditions. Enrichment cultures were established by repeatedly sub-culturing the consortia on pyrrolidine or piperidine in the presence of nitrate. The enrichments strictly required nitrate for the anaerobic degradation and utilized pyrrolidine or piperidine as a carbon, nitrogen, and energy source for their anaerobic growths. The anaerobic degradation of pyrrolidine and piperidine reduced nitrate to nitrogen gas, indicating that these anaerobic degradations were coupled with a respiratory nitrate reduction.
authors.affiliation: Department of Biological Sciences, Korean Advanced Institute for Science and Technology, Taejon, South Korea.
authors.forename: Hee-Sung
authors.initials: HS
authors.lastname: Bae
authors.forename: Young-Gyun
authors.initials: YG
authors.lastname: Cho
authors.forename: Sang-Eun
authors.initials: SE
authors.lastname: Oh
authors.forename: In-Soo
authors.initials: IS
authors.lastname: Kim
authors.forename: James M
authors.initials: JM
authors.lastname: Lee
authors.forename: Sung-Taik
authors.initials: ST
authors.lastname: Lee
mesh_terms: D001421:Bacteria, Anaerobic / Q000502:physiology*; D001673:Biodegradation, Environmental; D002121:Calcium Channel Blockers / Q000378:metabolism*; D004785:Environmental Pollutants / Q000378:metabolism*; D005740:Gases; D009566:Nitrates / Q000378:metabolism*; D010084:Oxidation-Reduction; D010880:Piperidines / Q000378:metabolism*; D011759:Pyrrolidines / Q000378:metabolism*
chemical_list: D002121:Calcium Channel Blockers; D004785:Environmental Pollutants; D005740:Gases; D009566:Nitrates; D010880:Piperidines; D011759:Pyrrolidines; C032727:piperidine; C032519:pyrrolidine