Table 5 Coefficients of the two presumed models and their level of significance (p-value).

From: Design of three-component essential oil extract mixture from Cymbopogon flexuosus, Carum carvi, and Acorus calamus with enhanced antioxidant activity

Term

Coefficient

DPPHIC50

ABTSIC50

Estimation

t-Ratio

P-value

Estimation

t-Ratio

P-value

C. flexuosus

Ω1

893.10

15.04

 < 0.0001*

1064.19

16.66

 < 0.0001*

C. carvi

Ω2

207.53

3.49

0.0174*

142.57

2.23

0.0760

A. calamus

Ω3

348.14

5.86

0.0020*

200.88

3.14

0.0255*

C. flexuosus*C. carvi

Ω12

− 625.31

− 2.09

0.0908

− 580.25

− 1.80

0.1311

C. flexuosus*A. calamus

Ω13

− 339.26

− 1.13

0.3081

− 739.60

− 2.30

0.0698

C. carvi*A. calamus

Ω23

59.63

0.20

0.8498

− 169.20

− 0.53

0.6214

C. flexuosus*C. carvi*A. calamus

Ω123

− 4285.57

-2.63

0.0463*

− 4790.40

− 2.74

0.0409*

  1. *Statistically significant at p < 0.05.