Fig. 1From: Optimization of l-malic acid production from acetate with Aspergillus oryzae DSM 1863 using a pH-coupled feeding strategy2.5-L bioreactor batch cultivations I (90 g/L CaCO3) and II (50 g/L CaCO3) without pH control. Fermentations were performed at 32 °C with a stirrer velocity of 600 rpm and an aeration rate of 0.5 vvm. Datapoints represent means ± standard deviation, n = 2Back to article page