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Table 2 Coded and actual levels of independent variables for optimization of response factors as determined by Box-Behnken design

From: Fatty acids characterization and oxidative stability of spray dried designer egg powder

Independent variables

Units

Coded levels

–1

0

+ 1

Inlet air temperature

°C

160

180

200

Feed flow rate

mL/hr

200

300

400

Atomization speed

rpm

16,000

20,000

24,000

Outlet air temperature

°C

60

70

80