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Official Journal of the Japan Wood Research Society

Table 1 Composition of samples before (original) and after (digested) digestion by N. hirtum larvae

From: Structural basis of lignocellulose deconstruction by the wood-feeding anobiid beetle Nicobium hirtum

 

Pine wood diet

Shorea artificial diet

Originala

Digesteda

%Changeb

Originala

Digesteda

%Changeb

Polysaccharide contents (wt% per CWR)

 Starch

0.30 ± 0.0

0.02 ± 0.4*

− 93

40. 8 ± 2.2

26.4 ± 3.1*

− 35

 Crystalline glucan

30.7 ± 4.1

24.2 ± 0.8*

− 21

28.2 ± 2.4

33.4 ± 2.1*

 + 19

 Amorphous glucan

5.0 ± 0.1

4.7 ± 0.3

− 5

3.0 ± 0.2

2.2 ± 0.1*

− 28

 Mannan

7.6 ± 0.1

6.0 ± 0.4*

− 21

2.9 ± 0.2

1.1 ± 0.1*

− 62

 Xylan

3.3 ± 0.1

4.2 ± 0.1*

 + 26

4.0 ± 0.4

4.7 ± 0.1*

 + 20

 Arabinan

1.2 ± 0.0

1.5 ± 0.1

 + 30

0.2 ± 0.0

0.2 ± 0.1

− 5

 Galactan

1.3 ± 0.1

1.8 ± 0.1

 + 38

0.4 ± 0.1

0.4 ± 0.1

 ± 0

Lignin content (wt% per CWR)

 

20.5 ± 1.4

35.7 ± 1.5*

 + 73

10.8 ± 0.5

21.2 ± 0.3*

 + 90

Lignin composition (mol% per S + G + H)

 Syringyl, S

n.d

n.d

− 

50.3 ± 0.7

45.6 ± 1.3*

− 9

 Guaiacyl, G

99.3 ± 0.1

99.5 ± 0.1

 ± 0

49.6 ± 0.7

54.3 ± 1.3*

 + 10

 p-Hydroxyphenyl, H

0.7 ± 0.1

0.6 ± 0.1

− 22

0.1 ± 0.1

0.2 ± 0.1

 + 36

 S/G ratio

–

–

− 

1.02 ± 0.03

0.84 ± 0.05*

− 17

  1. n.d., not detected.
  2. aValues are means ± standard deviation from triplicated runs. Asterisks (*) indicate significant differences between original and digested lignocellulose diets (Student’s t-test, p < 0.05).
  3. bBold values indicate significant decrease or increase in digested compared with original lignocellulose diets