มิว and มิว(ศูนย์) are the specific growth rates in the presence
and in the absence of the preservative. The mathematical
model described by Eqs. (5), (6) and (7)
implies that maintenance, yield and specific growth
rate should hyperbolically depend on the external
undissociated weak acid concentration and should all
display the same value for the constant KW. The
model was tested by fitting the corresponding
equations to the experimental values of m, YS and