Time course of macroscopic yields during A. niger idiophase.

1. Citric acid (Yp/s), CO₂ (Yco₂/s) and Biomass (Yx/s) substrate yields. Values from Röhr et al. (1987).

2. Polyol (Ypolyol/s) and Oxygen (Yo₂/s) substrate yields. The substrate-polyol yields were determined by carbon balance among the cellular input (glucose) and outputs (citric acid, biomass and CO₂). The negative values are indicative of net polyol consumption. The oxygen-substate yields was calculated by reductance grade balance among the all compounds interchanged between the cell and the medium. In all these calculations an average polyol composition [CH_2.54O]_3.72 was assumed.