Fig. 4

Time profiles of a GABA and b residual l-Glu concentration during conversion in different l-Glu concentrations. Conversions were performed at 45 °C and 12.5 g wet cell per liter (OD₆₀₀ of 15). Data are presented as the mean ± SD values from three independent experiments. Square, circle, up triangle, down triangle, diamond, left triangle and right triangle represent the concentrations of l-Glu: 1, 1.5, 2, 2.5, 3, 3.5 and 4 M, respectively