
Full text loading...
Streptococcus BL 78/7 was isolated from alkaline potato-processing effluent, and resembled S. casseliflavus in morphology, motility and pigment. In aerobic conditions, at controlled pH, growth occurred between pH 5 and 11 with a maximum growth rate between pH 8 and 9 and a maximum yield at pH 8. The major metabolic products formed from glucose were lactate and acetate. The molar proportion of lactate to acetate decreased with increasing pH, from 4:1 at pH 5 to approximately 1:1 above pH 9. Growth occurred under nitrogen over the pH range from below 6 to 11, with a maximum growth rate and yield at pH 7 to 8. Lactate was the major metabolic product, with formate, acetate and ethanol also present in the molar ratio of 2:1:1. The molar proportion of lactate to formate decreased from 5:1 at pH 6 to 1·3:1 at pH 11.
Article metrics loading...
Full text loading...
References
Data & Media loading...