Fig. 4From: Efficient evaluation of cellulose digestibility by Trichoderma reesei Rut-C30 cultures in online monitored shake flasksIllustration of areas of increasing (X) and decreasing (Y) oxygen transfer rate during cellulose utilization. T. reesei Rut-C30 was grown on 5 g L−1 glucose and 30 g L−1 α-cellulose as carbon sources. As lower threshold value for the calculation of the area of decreasing OTR an OTR = 2 mmol L−1 h−1 was chosen. The slopes of linear increase and linear decrease are marked by black lines Back to article page