Interactive Effects of Chemical Pretreatment and Drying on the Physicochemical Properties of Cassava Flour Using Response Surface Methodology
Table 2
ANOVA of the effect of model parameters on proximate components of cassava flour.
Source
Ash
Crude fibre
Moisture
Starch
value
value
value
value
value
value
value
value
CAR
Model
36.47
8.91
10.52
1.13
0.4265
-DT
45.87
16.48
17.73
1.50
0.2605
-COP
52.69
6.09
2.22
0.1801
1.84
0.2175
AB
13.48
3.41
0.1073
2.34
0.1701
1.31
0.2901
12.89
1.33
0.2861
0.72
0.4237
0.90
0.3756
63.71
18.20
30.28
0.18
0.6832
CCR
Model
41.22
7.22
12.47
0.38
0.8501
-DT
39.44
6.46
17.17
1.52
0.2570
-COP
45.69
4.17
0.0805
5.19
0.0568
0.02
0.8866
AB
14.39
3.04
0.1246
1.39
0.2764
<0.01
0.9870
5.90
0.14
0.7223
0.28
0.6149
0.09
0.7729
105.39
22.37
38.49
0.28
0.6104
CAW
Model
46.82
7.21
8.82
4.94
-DT
61.23
15.90
12.47
3.69
0.0960
-COP
67.66
2.18
0.1833
2.78
0.1393
15.15
AB
4.90
0.0624
1.37
0.2807
0.47
0.5174
0.02
0.8952
21.74
1.36
0.2820
1.61
0.2456
0.77
0.4084
88.29
16.21
28.07
5.51
0.0513
CCW
Model
23.86
11.49
9.49
0.65
0.6740
-DT
44.24
31.18
17.60
1.94
0.2068
-COP
14.02
2.95
0.1298
7.36
1.06
0.3381
AB
3.21
2.04
0.1962
1.23
0.3036
0.16
0.7009
14.45
3.11
0.1213
1.32
0.2887
0.08
0.7869
49.37
19.84
20.93
<0.01
0.9869
DT—drying temperature; COP—concentration of pretreatment; CAR—cassava from red landrace pretreated with citric acid; CCR—cassava from red landrace pretreated with calcium chloride; CAW—cassava from white landrace pretreated with citric acid; CCW—cassava from white landrace pretreated with calcium chloride; —linear effect of DT; —linear effect of COP; AB—interactive effect of DT and COP; —quadratic effect of DT; —quadratic effect of COP. Significant at 95% confidence level.
