Fig. 2
From: Efficient malic acid production from glycerol with Ustilago trichophora TZ1
Shake flask cultivation of U. trichophora TZ1 in MTM with 200 g L−1 glycerol. Cultures contained 100 g L−1 CaCO3. Comparison of acid production (squares, solid lines) and glycerol consumption (triangles, dotted lines) for samples dissolved with HCl (closed symbols, red) and supernatant (open symbols, black). Error bars indicate deviation from the mean (n = 2)