The effect of media changes on the rate of cellulose solubilisation by rumen and digester derived microbial communities

The aim of this study was to investigate the effect of rumen fluid and leachate-based media on the ability of rumen and anaerobic digester derived microorganisms to degrade cellulose. The results demonstrated that rumen microorganisms are not capable of solubilising cellulose, or generating biomass,...

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Bibliographic Details
Published in:Waste management (Elmsford) 2007, Vol.27 (12), p.1808-1814
Main Authors: O’Sullivan, Cathryn A., Burrell, Paul C.
Format: Article
Language:English
Subjects:
Animals
Applied sciences
Bioreactors
Cellulose - chemistry
Cellulose - metabolism
Culture Media - chemistry
Exact sciences and technology
Other wastes and particular components of wastes
Pollution
Refuse Disposal - methods
Rumen - microbiology
Solubility
Wastes
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Summary:The aim of this study was to investigate the effect of rumen fluid and leachate-based media on the ability of rumen and anaerobic digester derived microorganisms to degrade cellulose. The results demonstrated that rumen microorganisms are not capable of solubilising cellulose, or generating biomass, at an optimal rate when grown in leachate-based media when compared to the rates achieved when grown in rumen-based media. In contrast, the rate of biomass generation and cellulose solubilisation by digester microorganisms was not strongly affected by a change in media type. Several authors have theorised that cellulose degradation rates in anaerobic digesters can be increased by inoculation with rumen-derived microorganisms. The results from this study show that this approach is unlikely to be successful, because the rumen microorganisms would likely be unable to solubilise and out-compete native solid waste microorganisms for the cellulose in a foreign (leachate based) medium.
ISSN:0956-053X
1879-2456
DOI:10.1016/j.wasman.2006.10.010