Fig. 1. Time courses of lactic acid production (a) and cell growth (b) in
batch lactic acid fermentation from molasses at different culture pHs. Initial
molasses concentration was 200 g/l, equivalent to 102 g/l of total sugar. ()
pH 5.0; () pH 6.0; ( ) pH 7.0; () pH 8.0; () pH 9.0.