Fig. 2From: Enhancing the secretion pathway maximizes the effects of mixed feeding strategy for glucose oxidase production in the methylotrophic yeast Pichia pastorisEffects of co-feeding strategies on Gox expression. a Cell growth profile. b Gox activity profile. (Y) Co-feeding with yeast extract. (S) Co-feeding with sorbitol. Sole methanol feeding (square), methanol/yeast extract (circle), and methanol/sorbitol (triangle). Three parallel flasks are tested for each strain at 30 °C. Error bars represent deviations (n = 3)Back to article page