ABSTRACT
The yield Y i} is defined as the ratio between the product ( i) production rate r i and the corresponding substrate ( j ) consumption rate - r J :
Y ij = r j
(-) 3.1
r is defined as the production rate (mol s-1); thus the consu.mption rate is - r. In consumption the value of r is negative. In this chapter the yield equations for microorganism growth and production and for enzymatic conversion will be dealt with.
