Table 1
Experimental ranges and values of the independent variables in the central composite design for manufacturing process of the flying fish roe analogs

Independent variables (IVs)

Symbol

Range and levels

−2

−1

0

+1

+2

Sodium alginate concentration (%, w/v)

X 1

0.4

1.2

2

2.8

3.6

Curing time in calcium chloride solution (min)

X 2

0

15

30

45

60

Calcium chloride concentration (%, w/v)

X 3

0.5

1

1.5

2

2.5

Rotation speed of calcium chloride solution (×g)

X 4

100

200

300

400

500