Calculating free energy conservation efficiencies for aerobic growth processes

Calculating free energy conservation efficiencies for aerobic growth processes. 

For the aerobic growth of S. cerevisiae on glucose as represented in Table 2 

With the appropriate data from Table 3, the free energy change (A G n,) accompanying the process represented by equation (25) is calculated to be -475.44 kJ ICCmol. Using equation (1) the biomass represented in equation (25) contains 4.079 AE. The average free energy charge for this biomass is then 

Because tJq represents the fraction of the free energy from one mol of substrate that is conserved within the structure of the cells, if there are no other organic products of the growth process the fraction (1- tjq) must be that of the free energy that is lost during metabolism. Thus 

This value is nearly identical to that of -1996.95 kJ mol in Table 2. It should be the same and probably differs because of the use of fractional numbers rather than small whole numbers in the calculations. 

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