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Official Journal of the Japan Wood Research Society

Table 2 Dichloromethane extracts of steam-treated rice straw

From: Steam treatment to enhance rice straw binderless board focusing hemicellulose and cellulose decomposition products

Compounds

Retention time

GC/MSa (min)

Treatment time at 200 °C

(%)

0 min

10 min

20 min

Waxes

 

99.03

71.65

65.52

 2-Pentadecanone

18.8

2.64

1.68

1.39

 Tetradecanoic acid

18.9

1.09

1.88

1.71

 Octenoic acid

20.9

N/D

1.04

1.04

 Hexadecanoic acid

21.1

43.32

37.91

36.61

 Heptadecanoic acid

22.3

1.2

1.71

1.81

 Octadecadienoic acid

23.2

15.93

9.76

6.76

 cis-9-Octadecenoic acid

23.4

24.76

11.44

8.29

 Octadecanoic acid

23.8

6.48

4.5

2.86

 Eicosanoic acid

28

1.6

N/D

N/D

 Other aliphatic compounds

2.01

1.74

5.05

Lignin degradation products

 

0

14.02

12.92

 p-Hydroxybenzaldehyde

12.7

N/D

1.74

1.57

 Vanillin

14.8

N/D

8.65

6.65

 Syringaldehyde

16.9

N/D

1.34

1.15

 Other aromatic compounds

N/D

2.28

3.55

Hemicellulose and cellulose degradation products

0

5.3

19.09

 5-Hydroxymethylfurfural

11.64

N/D

5.3

19.09

Yieldb (%)

 

0.97

2.23

7.16

  1. N/D not detected
  2. aColumn: NB-1 (30 m × 0.25 mm); 60 °C, 0 min − 10 °C/min − 260 °C, 25 min
  3. bYield of dichloromethane extraction