Convenience function to calculate the lag phase duration (lambda) of the Baranyi model from the maximum specific growth rate and the initial value of the variable Q.
Q0_to_lambda(q0, mu)
Initial value of the variable Q.
Specific growth rate in the exponential phase (log10(units)/[time]).
Note that this function uses the unit system of biogrowth (i.e. log10). Care must be taken when using parameters obtained from other sources.