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Table 7 Pasting Profile of Yellow-Fleshed Sweet Potato Flour Samples

From: Some quality properties of yellow-fleshed sweet potato flour as affected by different drying methods

Sample

Peak Viscosity (RVU)

Trough Viscosity (RVU)

Breakdown Viscosity (RVU)

Final Viscosity

(RVU),

Setback Viscosity (RVU)

Peak Time (min)

Pasting Temperature (°C)

SU

75.71 ± 0.46d

56.46 ± 0.46e

19.25 ± 0.02f

72.83 ± 0.75e

16.38 ± 0.29f

4.67 ± 0.06a

80.70 ± 0.04a

OU

86.17 ± 1.17c

62.00 ± 0.75d

24.17 ± 0.42c

86.63 ± 1.46d

24.63 ± 0.71d

4.60 ± 0.09ab

94.45 ± 0.40a

SB

114.67 ± 0.08a

80.33 ± 0.42a

33.83 ± 0.50b

124.58 ± 0.02a

43.75 ± 0.42a

4.53 ± 0.08b

80.60 ± 0.50a

OB

66.50 ± 1.08e

47.21 ± 0.96f

19.27 ± 0.13d

69.75 ± 1.67e

22.54 ± 0.71e

4.53 ± 0.09b

74.60 ± 4.50a

SS

93.58 ± 0.25b

72.08 ± 0.08b

21.50 ± 0.17e

107.08 ± 0.50b

35.00 ± 0.58b

4.53 ± 0.07b

80.75 ± 0.40a

OS

87.42 ± 0.58c

64.25 ± 0.58c

23.17 ± 0.00f

94.00 ± 1.08c

29.75 ± 0.50c

4.67 ± 0.06a

79.45 ± 0.40a

DD

84.03 ± 0.08e

18.13 ± 0.04g

49.76 ± 0.04a

24.88 ± 0.04f

6.75 ± 0.05g

1.07 ± 0.02c

0.00 ± 0.07b

  1. Mean values with the same superscript in a column are not significant (p<0.05)
  2. SU Sun-dried (untreated), OU Oven-dried (untreated), SB Sun-dried (0.02% sulfite, blanched at 85 °C for 3 min 30 s), OB Oven-dried (0.02% sulfite, blanched at 85 °C for 3min 30 s), SS Sun-dried (0.02% sulfite, Steam blanched for 2 min), OS Oven-dried (0.02% sulfite, Steam blanched for 2 min), DD Drum-dried (150 °C, 10 rpm, MC - 84.05%