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Table 1 Independent variables and their corresponding levels for iron rich extruded snack

From: Optimization of the iron-enriched extruded snack containing jackfruit seed flour, mung bean flour and ferrous ammonium phosphate by using response surface methodology

Independent variable

Symbol

Code Levels

 

-α

-1

0

+ 1

+α

Jackfruit seed flour (%)

JFSF

10

18.11

30

41.89

50

Mung bean flour (%)

MBF

5

9.05

15

20.95

25

Ferrous Ammonium Phosphate (%)

FAP

0.005

0.01

0.015

0.021

0.025