Table 1 Main components of raw mustard and results of hydrothermal pretreatment

Dried raw mustard

53.20%

4.70%

0.80%

1.10%

13.45%

—

Fresh raw mustard

22.67%

2.13%

0.30%

0.64%

5.64%

69.30%

Carbohydrate composition of raw mustard after hydrothermal pretreatment

Fresh raw mustard

Glucose

xylose

Galactose

mannose

Fructose

Arabinose

165-173℃

29.6±0.14

2.57±0.05

4.36±0.34

2.23±0.14

3.35±0.052

2.462±0.05

194-210℃

32.1±0.74

3.5±0.07

5.3±0.39

2.3±0.34

4.3±0.05

2.62±0.15

230-240℃

24.1±0.34

2.51±0.17

4.31±0.59

1.13±0.14

3.32±0.15

2.12±0.25

138-142℃

26.1±0.53

3.12±0.54

3.31±0.79

1.65±0.35

3.02±0.43

1.12±0.14

126-130℃

16.1±0.23

1.04±0.14

1.34±0.19

0.89±0.015

2.02±0.13

0.45±0.04

The main parameters of raw mustard after hydrothermal pretreatment

Treatment conditions

COD

TOC

TN

Ammonia-nitrogen compound (mg/L)

C/N

pH

Solid removal

Rate

165-173℃

10248.31

3750

2349.5

157.34

1.59

6.5

52.0%4

194-210℃

7969.31

2739.5

1467

220.23

1.86

6.6

48.24%

230-240℃

11672.68

4371

2075

172.23

2.11

5.7

42.50%

138-142℃

5055.87

1398.25

956.25

112.12

1.46

5.6

20.55%

126-130℃

4557.34

1132.5

819.5

92.54

1.38

7.3

21.59%