Abstract
Forty-three isolates of Gram-negative, mesophilic, non-spore-forming anaerobic cellulolytic bacteria were obtained from (i) an anaerobic reactor treating waste water from an integrated paper mill and (ii) an anaerobic sewage-sludge digestor. These isolates were studied for carbohydrate fermentation and fermentation products. By numerical techniques, 22 isolates could be placed in two groups: group A (10 isolates) and group B (12 isolates). The isolates belonging to group A showed degradation of filter paper in 2–7 days. They were slightly-curved long rods and similar toBacteroides cellulosolvens andAcetivibrio cellulolyticus. Acetic acid was produced as major product. The bacteria also produced ethanol, isobutanol, pyruvic and lactic acids. Group B strains degraded filter paper in 4–5 weeks. They were short rods and produced propionic, lactic, succinic and acetic acids as fermentation products. The remaining 21 isolates could disintegrate filter paper in 2–5 weeks. They showed variable fermentation patterns, both as to fermentable carbohydrates and end products. Except for one isolate, which showed obvious similarity toButyrivibrio fibrisolvens, the isolate differed distinctly from reference strains of ruminai origin.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: MIRCEN Journal of Applied Microbiology and Biotechnology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.