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Table 2 Central composite design and responses of the dependent variables for the flying fish roe analogs processing to the independent variables

From: Production optimization of flying fish roe analogs using calcium alginate hydrogel beads

Run order

Coded level

Response

X 1

X 2

X 3

X 4

Y 1

Factorial portion

 1

−1

−1

−1

−1

84.2

 2

1

−1

−1

−1

91.7

 3

−1

1

−1

−1

91.3

 4

1

1

−1

−1

95.5

 5

−1

−1

1

−1

84.2

 6

1

−1

1

−1

92.0

 7

−1

1

1

−1

90.0

 8

1

1

1

−1

95.5

 9

−1

−1

−1

1

81.0

 10

1

−1

−1

1

91.7

 11

−1

1

−1

1

82.6

 12

1

1

−1

1

91.7

 13

−1

−1

1

1

81.8

 14

1

−1

1

1

94.4

 15

−1

1

1

1

89.5

 16

1

1

1

1

95.2

Axial portion

 17

−2

0

0

0

68.4

 18

2

0

0

0

95.5

 19

0

−2

0

0

91.7

 20

0

2

0

0

94.7

 21

0

0

−2

0

88.9

 22

0

0

2

0

85.7

 23

0

0

0

2

95.0

 24

0

0

0

2

86.4

Center portion

 25

0

0

0

0

97.5

 26

0

0

0

0

98.2

 27

0

0

0

0

97.7

  1. Y (sphericity, %), X 1 (sodium alginate concentration, %), X 2 (curing time in calcium chloride solution, min), X 3 (calcium chloride concentration, %), X 4 (rotation speed of calcium chloride solution, ×g)