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Title 

Analysis of medium-chain-length polyhydroxyalkanoate-producing bacteria in activated sludge samples enriched by aerobic periodic feeding

Authors 

S H LeeJ H KimC W ChungDo Young KimY H Rhee

Publisher 

Springer Verlag (Germany)

Issue Date 

2018

Citation 

Microbial Ecology

Keywords 

Aerobic periodic feedingMedium-chain-length polyhydroxyalkanoatesMixed microbial culturesPseudomonas aeruginosaWaste activated sludge

Abstract 

Analysis of mixed microbial populations responsible for the production of medium-chain-length polyhydroxyalkanoates (MCL-PHAs) under periodic substrate feeding in a sequencing batch reactor (SBR) was conducted. Regardless of activated sludge samples and the different MCL alkanoic acids used as the sole external carbon substrate, denaturing gradient gel electrophoresis analysis indicated that Pseudomonas aeruginosa was the dominant bacterium enriched during the SBR process. Several P. aeruginosa strains were isolated from the enriched activated sludge samples. The isolates were subdivided into two groups, one that produced only MCL-PHAs and another that produced both MCL- and short-chain-length PHAs. The SBR periodic feeding experiments with five representative MCL-PHA-producing Pseudomonas species revealed that P. aeruginosa has an advantage over other species that enables it to become dominant in the bacterial community

ISSN 

0095-3628

Link 

http://dx.doi.org/10.1007/s00248-017-1084-x

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-05-02


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