Optimum Growth Parameters of Lactic Streptococci used for the Production of Concentrated Cheese Starter Cultures

Abstract
Summary.: As a preliminary to producing continuous cultures of lactic streptococci, several parameters affecting growth rate in broth culture were studied. The optimum pH for growth of 3 strains was c. 6.4. The results indicate that continuous cultivation should not be done above c. 27° and that, in the case of Streptococcus lactis C10, excessive aeration should be avoided. Sparging with CO2 was unnecessary and with N2 was deleterious to growth.