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Table 8 Colour analysis, expansion ratio and bulk density and cross section analysis of extruded corn snacks

From: Production and evaluation of novel functional extruded corn snacks fortified with ginger, bay leaves and turmeric powder

Treatments

Colour parameters

Expansion ratio

Bulk density (g/cm3)

Mean area of cells (mm2)

Number of cells

C

L*

a*

b*

h

E

Control

16.31 ± 0.11d

91.93 ± 0.52a

5.5 ± 0.12a

30.1 ± 0.23c

101.5 ± 0.34a

0 ± 0.0

3.33 ± 0.01b

0.13 ± 0.03d

0.361 ± 0.4c

11

T1

16.12 ± 0.22d

74.5 ± 0.31e

−3.79 ± 0.22e

30.96 ± 0.86c

97.6 ± 0.36d

20.56 ± 0.33b

3.01 ± 0.05c

0.26 ± 0.02c

0.201 ± 0.2c

14

T2

33.45 ± 0.42b

76.73 ± 0.44d

−1.15 ± 0.01c

43.02 ± 0.35a

99.1 ± 0.42c

25.33 ± 0.45a

4.02 ± 0.03a

0.12 ± 0.01d

3.389 ± 3.3a

9

T3

17.06 ± 0.32c

80.99 ± 0.33b

2.23 ± 0.22b

27.66 ± 0.58d

94.8 ± 0.22e

12.08 ± 0.17d

2.83 ± 0.07b

0.35 ± 0.03b

0.212 ± 0.3c

18

T4

36.35 ± 0.32a

77.8 ± 0.21c

−2.34 ± 0.11d

35.37 ± 0.23b

100.1 ± 0.33b

17.79 ± 0.55c

3.16 ± 0.06d

0.16 ± 0.04a

1.255 ± 1.9b

12

  1. L*: lightness; a*: red-green balance; b*: yellow-blue balance; ΔE: total colour chance index, h: Hue angle and ΔE: Total colour difference, a-c: indicated with similar letters in columns do not differ significantly at p = 0.05. T1, T2, T3 and T4: extruded corn product fortified with 3% (w/w) of laurel, turmeric, ginger and mixture formula contains 3% of the three herbs’ mixture mentioned (1:1:1), respectively