Table 3 BBD on extraction yields of fermentable sugars and phenolic compounds after acid treatment of PPW.

From: Investigation and characterization of changes in potato peels by thermochemical acidic pre-treatment for extraction of various compounds

Run No.

K1

K2

K3

Total Sugar mg/gds

Reducing Sugar mg/gds

Total Phenolic Compounds (mg/gds)

Predict

Observe

Difference

Predict

Observe

Difference

Predict

Observe

Difference

1

5

0.8

6

95.6

84.00

11.6

31.40

26.10

−5.3

35.63

40.54

4.906

2

5

1.2

6

168.16

188.00

19.84

61.14

58.48

−2.66

38.76

43.68

4.92

3

15

0.8

6

147.74

142.93

−4.81

30.53

31.41

0.883

15.8

14.16

−1.64

4

15

1.2

6

66.833

72.733

5.9

34.173

35.95

1.777

14.10

12.46

−1.635

5

10

0.8

4

162.16

172.16

10

41.20

43.94

2.74

17.86

17.36

−0.506

6

10

1.2

4

39.41

29.41

−10

50.44

51.86

1.42

17.11

16.60

−0.513

7

10

0.8

8

64.98

74.98

10

78.80

77.37

−1.43

17.78

18.30

0.514

8

10

1.2

8

102.63

98.10

−4.53

95.21

92.46

−2.75

17.55

18.06

0.507

9

5

1.0

4

129.4

121.2

−8.2

56.80

56.6

−0.2

24.09

20.2

−3.892

10

15

1.0

4

95.013

97.866

2.853

45.66

42.95

−2.713

11.88

13.86

1.978

11

5

1.0

8

61.15

62.9

1.75

136.10

144.12

8.02

28.37

22.44

−5.932

12

15

1.0

8

95.13

97.866

2.736

60.10

63.12

3.024

10.70

12.00

1.298

13

10

1.0

6

124.63

174.10

49.47

52.30

43.68

−8.62

14.31

12.60

−1.71

14

10

1.0

6

124.63

89.30

−35.33

38.25

43.68

5.43

14.31

13.90

−0.41

15

10

1.0

6

124.63

160.50

35.87

40.50

43.68

3.18

14.31

16.43

2.12