A survey of ammonia-assimilating micro-organisms in cattle manure composting

H. Sasaki, H. Yano, T. Sasaki, Y. Nakai

Research output: Contribution to journalReview articlepeer-review

24 Citations (Scopus)


Aims: To evaluate the ammonia-assimilating abilities of micro-organisms isolated from cattle manure composting processes and to determine the distribution of cultivable species of ammonia-assimilating micro-organisms in microbial communities during the composting processes. Methods and Results: Compost samples were collected from four stages of treatment. Trypto soya agar was used for the isolation of ammonia-assimilating aerobes. Many of the isolates showed high ammonia-assimilating ability in a medium containing basal components and a compost extract. Partial 16S ribosomal DNA sequencing showed that the cultivable species of highly efficient ammonia-assimilating isolates changed during the composting process. The community structure of micro-organisms and actinomycetes was analysed by polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE). Two species of actinomycetes identified by PCR-DGGE coincided with those found among the cultured isolates. Conclusions: Ammonia-assimilating micro-organisms obtained by the cultivation method were not predominant in the microbial community during the composting process: however certain cultured actinomycetes were members of predominant species in the actinomycetes community. Significance and Impact of the Study: Ammonia assimilation by micro-organisms is one of the important mechanisms for ammonia retention in the composting process. Cultivable actinomycetes are a means for preventing ammonia emission from the composting process.

Original languageEnglish
Pages (from-to)1356-1363
Number of pages8
JournalJournal of Applied Microbiology
Issue number6
Publication statusPublished - 2005 Dec 12


  • Actinomycete
  • Ammonia
  • Cattle manure
  • Compost
  • Microbial community

ASJC Scopus subject areas

  • Biotechnology
  • Applied Microbiology and Biotechnology


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