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Table 4 Regression coefficients of the predicted quadratic polynomial model for response variables (MUFA (OA%)) in urea inclusion fractionation experiment of J. curcas seed oil

From: Selectively increasing of polyunsaturated (18:2) and monounsaturated (18:1) fatty acids in Jatropha curcas seed oil by crystallization using D-optimal design

Variables

Coefficients (ß), MUFA (OA%) (Y 3 )

T

P

Notability

Intercept

18.77

81.33

0.0001

***

Linear

    

X 1

-14.76

577.20

0.0001

***

X 2

1.04

2.80

0.1330

 

X 3

-1.59

6.53

0.0339

**

Quadratic

    

X 11

5.19

14.55

0.0051

***

X 22

0.29

0.061

0.8115

 

X 33

-1.32

1.25

0.2951

 

Interaction

    

X 12

-0.49

0.52

0.4906

 

X 13

-0.39

0.34

0.5741

 

X 23

1.08

2.26

0.1714

 

R 2

0.98

   
  1. Notes: ** P < 0.05; *** P < 0.01. T: F test value
  2. See Table 1 for a description of the abbreviations