Changes in metabolism of the rumen bacterium Streptococcus bovis H13/1 resulting from alteration in dilution rate and glucose supply per unit time.
Streptococcus bovis H13/1 was grown in a glucose-limited chemostat. A concomitant increase in dilution rate and glucose supply per unit time caused both an increase in lactate production per mole of glucose fermented and a linear increase in growth yield over the dilution rate range 0.052 to 0.141/h. When the dilution rate was increased with no change in glucose supply per unit time there was a reduction in lactate production and an increase in that of acetate and ethanol coinciding with a non-linear increase in growth yield. YMaxglu = 38.6 and a maintenance coefficient, ms = 0.290 mmol/l glucose/g cells/h were calculated. The results also suggested an interaction between the formate and CO2 pools.
D000085:Acetates / Q000378:metabolism; D019342:Acetic Acid; D000818:Animals; D001419:Bacteria / Q000378:metabolism; D003470:Culture Media; D005285:Fermentation / Q000187:drug effects*; D005947:Glucose / Q000378:metabolism* / Q000494:pharmacology; D007773:Lactates / Q000096:biosynthesis; D019344:Lactic Acid; D011773:Pyruvates / Q000378:metabolism; D019289:Pyruvic Acid; D012417:Rumen / Q000382:microbiology; D013291:Streptococcus / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism*
D000085:Acetates; D003470:Culture Media; D007773:Lactates; D011773:Pyruvates; D019344:Lactic Acid; D019289:Pyruvic Acid; D005947:Glucose; D019342:Acetic Acid