Table 1.

Experimental design “centroid simplex”

Mixtures	Proportion of each compound in the mixture	Values of each compound (g) in 5 g of mixture
	(x1, x2, x3)	α-amylase	Ascorbic acid	Glucose oxidase
1	(1, 0,0)	0.007	0.4	0.0005
2	(0, 1,0)	0.004	1	0.0005
3	(0, 0, 1)	0.004	0.4	0.0015
4	(1/2, 1/2, 0)	0.0055	0.7	0.0005
5	(1/2, 0, 1/2)	0.0055	0.4	0.001
6	(0, 1/2, 1/2)	0.004	0.7	0.001
7	(1/3, 1/3, 1/3)	0.005	0.6	0.0008