End products and fermentation balances for lactic streptococci grown aerobically on low concentrations of glucose.
Maximum acetate produced aerobically by Streptococcus diacetilactis and Streptococcus cremoris was 14% of 1 to 7 mumol of glucose/ml in a partially defined medium that contained lipoic acid. Y (glucose) values were 35.3 (S. diacetilactis) and 31.4 (S. cremoris) with low concentrations (1 to 7 mumol/ml) of glucose in the medium and 21 (S. diacetilactis) with higher concentrations (6 to 15 mumol/ml). Y (adenosine 5'-triphosphate) values for the bacteria, determined by taking into account the end products produced, were 15.6 and 13.9 for S. diacetilactis and S. cremoris, respectively, in the partially defined medium containing 1 to 7 mumol of glucose/ml and higher (21.5 and 18.9, respectively) in a complex medium that contained 2 mumol of glucose/ml. Addition of citrate in addition to glucose did not result in higher molar growth yields.
D000085:Acetates / Q000378:metabolism*; D000255:Adenosine Triphosphate / Q000378:metabolism; D000332:Aerobiosis; D002951:Citrates / Q000378:metabolism; D003470:Culture Media; D005947:Glucose / Q000378:metabolism*; D013291:Streptococcus / Q000378:metabolism*
D000085:Acetates; D002951:Citrates; D003470:Culture Media; D000255:Adenosine Triphosphate; D005947:Glucose