Figure 1.

Time course of xylanase production by P. glabrum in stationary (a) and shake culture at 120 rev min⁻¹ (b). Culture conditions: Vogel medium with 1% (w/v) brewer's spent grain, pH 6.5 at 28 °C. (■) Xylanase activity (U/mL), (•) intracellular protein (mg).