Table 1. The results of orthogonal test L₁₆ (4⁴).

Expt
No.

Pressure
(MPa)

Temperature
(ºC)

Dynamic time
(min)

Modifier volume
(ml)

Extraction yield
(%, w/w)

1

5

35

25

30

0.99

2

5

45

15

40

0.87

3

5

55

45

10

1.34

4

5

65

35

20

2.12

5

10

35

15

10

2.68

6

10

45

25

20

3.27

7

10

55

35

30

3.81

8

10

65

45

40

4.01

9

15

35

35

40

4.69

10

15

45

45

30

4.23

11

15

55

15

20

3.56

12

15

65

25

10

1.38

13

20

35

45

20

2.79

14

20

45

35

10

2.41

15

20

55

25

40

2.00

16

20

65

15

30

1.16