Figure 3.

Effect of NAE 14:0 (0.1 mm) on medium alkalinization prior to or during xylanase treatment. NAE 14:0 was added either 10 min before or after xylanase treatment (1 μg mL⁻¹) and the pH of the medium was recorded every 2 min for 40 min. Controls and experimental treatments were carried out on the same population of cells. Results are representative of trends observed in two replicate experiments. ▪, Xylanase; ♦, NAE14:0 added 10 min after xylanase; ▴, xylanase plus NAE14:0 added at the same time; ●, control; ▾, NAE14:0 added 10 min before xylanase.