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l-(+)-Lactic acid production from the homolactic PMI/C1(pEPL2) transformed strain. Batch fermentation was carried out as described in Fig. 2. The LDH-specific activity was 55 to 60 U (mg of total cell proteins)−1 during the entire experiment. Final pH value was 2.95. ■, cells per milliliter; ○, ethanol (ET) production, grams per liter; ●, l-(+)-lactic acid (LA) production, grams per liter; and ▵, percent (wt/vol) residual glucose (Glu).
