Combination of Chemically-Characterized Essential Oils from Eucalyptus polybractea, Ormenis mixta, and Lavandula burnatii: Optimization of a New Complete Antibacterial Formulation Using Simplex-Centroid Mixture Design

Table 5

Estimated regression coefficients for the uncompleted cube regression model.

		E. coli			S. aureus
Term	Coefficient	Estimation	t-ratio	value	Estimation	t-ratio	value
EPEO	δ1	2.02	10.99	0.0001	0.24	9.40	0.0002
OMEO	δ2	5.92	32.29	<0.0001	0.50	19.56	<0.0001
LBEO	δ3	0.97	5.29	0.0032	0.24	9.40	0.0002
EPEO OMEO	δ12	−8.12	−8.79	0.0003	−0.51	−3.93	0.0111
EPEO LBEO	δ13	1.97	2.13	0.086	−0.03	−0.25	0.8158
OMEO LBEO	δ23	−6.21	−6.72	0.0011	−0.51	−3.93	0.0111
EPEO OMEO LBEO	δ123	−32.04	−6.38	0.0014	−2.70	−3.83	0.0123

Statistically significant at .