Fermentation of barley straw by anaerobic rumen bacteria and fungi in axenic culture and in co-culture with methanogens

K N JOBLIN, Gillian Patricia Campbell, Anthony James Richardson, C S STEWART

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Abstract

When incubated in axenic culture, strains of anaerobic rumen fungi were more active than cellulolytic bacteria in solubilizing barley straw stem fragments 5 to 10 mm in length. Pretreatment with ammonia had little effect on microbial attack. Of three species of methanogens tested, Methanobrevibacter smithii strain PS formed the most stable and reproducible co-cultures with the fungi and with Ruminococcus albus, and the presence of this organism enhanced the extent of degradation of straw, although this effect was less marked than that previously observed when pure cellulose was used as substrate.

Original languageEnglish
Pages (from-to)195-197
Number of pages3
JournalLetters in Applied Microbiology
Volume9
Issue number5
DOIs
Publication statusPublished - Nov 1989

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