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Table 3 Biochemical compositions of leafy vegetable residues (based on TS)

From: Study on biomethane production and biodegradability of different leafy vegetables in anaerobic digestion

Samples

Proteins (%)

VFAs (%)

Lipids (%)

Structural carbohydrates

Non-structural carbohydrates (%)

Ash (%)

Hemicellulose (%)

Cellulose (%)

Lignin (%)

V1

1.04 ± 0.01

0.35 ± 0.00

2.11 ± 0.03

68.24 ± 1.86

13.52 ± 0.61

0.44 ± 0.00

0.29 ± 0.00

9.75 ± 0.02

V2

1.13 ± 0.00

1.04 ± 0.00

1.26 ± 0.01

60.22 ± 4.00

16.46 ± 1.63

0.22 ± 0.13

6.53 ± 0.05

17.70 ± 0.53

V3

0.42 ± 0.00

0.23 ± 0.01

5.51 ± 0.03

33.38 ± 0.18

16.62 ± 0.10

10.34 ± 0.11

2.42 ± 0.01

13.21 ± 0.12

V4

0.55 ± 0.00

0.78 ± 0.01

4.33 ± 0.01

62.28 ± 0.56

12.87 ± 0.93

3.86 ± 0.61

2.02 ± 0.00

5.24 ± 0.01

V5

0.56 ± 0.00

0.88 ± 0.02

5.07 ± 0.05

38.14 ± 3.47

17.27 ± 1.13

10.30 ± 0.55

0.03 ± 0.00

9.77 ± 0.04

V6

0.78 ± 0.01

0.76 ± 0.00

2.64 ± 0.02

50.97 ± 0.37

12.08 ± 0.05

5.76 ± 0.73

0.01 ± 0.00

30.78 ± 0.30

V7

0.15 ± 0.00

3.01 ± 0.03

3.52 ± 0.01

14.37 ± 2.06

19.53 ± 1.02

12.12 ± 1.56

0.02 ± 0.00

24.63 ± 0.45

V8

0.88 ± 0.01

0.80 ± 0.00

5.35 ± 0.05

31.95 ± 3.18

14.55 ± 0.34

5.96 ± 0.50

0.35 ± 0.00

26.88 ± 0.27

V9

0.71 ± 0.00

0.34 ± 0.01

2.98 ± 0.01

54.89 ± 3.53

14.43 ± 0.77

3.90 ± 0.69

0.31 ± 0.01

9.52 ± 0.05

V10

0.57 ± 0.00

0.30 ± 0.00

3.53 ± 0.03

61.54 ± 3.21

11.04 ± 5.81

5.26 ± 0.25

1.62 ± 0.02

8.76 ± 0.10

V11

1.35 ± 0.01

1.90 ± 0.02

4.79 ± 0.03

56.36 ± 0.50

14.08 ± 1.30

4.88 ± 1.33

0.16 ± 0.00

12.47 ± 0.08

V12

0.23 ± 0.00

0.59 ± 0.00

3.37 ± 0.03

24.85 ± 0.28

7.87 ± 0.89

9.43 ± 1.35

0.03 ± 0.00

27.19 ± 0.08

V13

0.12 ± 0.00

0.76 ± 0.00

2.14 ± 0.01

29.71 ± 5.15

18.95 ± 0.46

8.53 ± 1.40

0.02 ± 0.00

24.51 ± 0.38

V14

0.80 ± 0.00

1.01 ± 0.04

2.05 ± 0.01

47.51 ± 4.32

6.61 ± 1.18

3.87 ± 1.26

1.55 ± 0.02

9.83 ± 0.13

V15

0.53 ± 0.00

0.73 ± 0.00

1.51 ± 0.03

37.84 ± 2.43

19.22 ± 0.78

3.32 ± 1.57

0.07 ± 0.00

26.18 ± 0.29

V16

1.21 ± 0.00

0.69 ± 0.01

4.02 ± 0.05

35.45 ± 2.91

20.67 ± 1.12

6.16 ± 0.48

0.84 ± 0.01

11.83 ± 0.22

V17

1.28 ± 0.00

1.09 ± 0.00

1.02 ± 0.01

37.98 ± 2.82

10.50 ± 0.73

11.13 ± 1.69

0.02 ± 0.00

27.38 ± 0.34

V18

0.42 ± 0.00

0.48 ± 0.01

1.66 ± 0.05

41.05 ± 0.95

14.61 ± 1.61

10.42 ± 1.77

0.02 ± 0.00

19.11 ± 0.05

V19

0.80 ± 0.01

1.54 ± 0.00

2.71 ± 0.03

54.90 ± 4.60

13.61 ± 0.68

4.81 ± 0.70

0.36 ± 0.00

16.32 ± 0.02

V20

0.30 ± 0.00

1.10 ± 0.00

3.42 ± 0.05

36.91 ± 2.97

15.64 ± 0.38

4.41 ± 0.55

0.93 ± 0.00

23.17 ± 0.69