ORIGINAL PAPER
Fermentation of glucose and xylose in
Prevotella ruminicola AR29
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Institute of Animal Physiology and Genetics,
Czech Academy of Sciences,
104 00 Praha 10, Czech Republic |
Publication date: 1999-01-02
J. Anim. Feed Sci. 1999;8(1):115–122
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ABSTRACT
Prevotella ruminicola is a fibrolytic rumen bacterium that degrades complex carbohydrates and
ferments the resulting hexoses and pentoses. Cultures of strain AR29 grew more rapidly on glucose
than on xylose, but produced almost the same metabolite profiles on both carbon sources. Glucose
in glucose-plus-xylose medium was used preferentially. The production of cell dry matter, growth
yields of dry matter and protein, and cell composition (cell carbohydrate and protein) were not
significantly different in glucose- and xylose-grown cultures. High aldolase (EC 4.1.2.13) activity
was found both in glucose- and xylose-grown cells of the strain AR29. A very low phosphoketolase
(EC 4.1.2.9) activity was detected in cells cultured on xylose. In contrast, enzymes of the EntnerDoudoroff pathway (6-phosphogluconate dehydrase and 2-keto-3-deoxy-6-phosphogluconate aldolase) could not be evidenced.
CITATIONS (1):
1.
Metabolism of pectin in rumen bacteria Butyrivibrio fibrisolvens and Prevotella ruminicola
M. Marounek, D. Duskova
Letters in Applied Microbiology