Fig. 1From: Enhancement of thermoalkaliphilic xylanase production by Pichia pastoris through novel fed-batch strategy in high cell-density fermentationDCW and xylanase activity profiles with xylanase expression at different carbon sources in shake flask. a methanol was added after fermentation for 60Â h, b methanol was added every 24Â h. Circles, xylanase activity (maltose); asterisks, xylanase activity (glucose); crosses, xylanase activity (glycerol); triangles, DCW (glucose); squares, DCW (maltose); diamonds, DCW (glycerol)Back to article page