A Comparative Study of New Aspergillus Strains for Proteolytic Enzymes Production by Solid State Fermentation

Table 3

Inactivation and statistical parameters estimated using a first-order inactivation model (3). Parameter is the inactivation rate constant and is the initial activity. For strain reference numbers see Section 2.2.

	Strain 4	Strain 8	Strain 9	Strain 12
Enz. extract
	0.998	1.000	0.999	0.999
(min)	0.003	0.009	0.021	0.003
Half-life (min)	225.000	75.260	32.910	204.000
Std. error
	0.004	0.003	0.005	0.003
	0.000	0.000	0.001	0.000
	0.973	0.995	0.994	0.990