Table 1 O/C ratio and area of C 1 s peaks of PLM carriers

From: Analysis of Aspergillus niger isolated from ancient palm leaf manuscripts and its deterioration mechanisms

Degradation time (d)

O/C ration

C1 (%)

C2 (%)

C3 (%)

C4 (%)

0

0.28

74.52

11.82

9.42

4.24

7

0.27

74.42

15.82

7.68

2.10

14

0.24

74.21

10.43

13.35

2.02

21

0.20

80.47

10.66

7.16

1.71

28

0.17

84.52

5.96

8.09

1.43