Table 1: Elemental content of nitrogen, carbon, hydrogen, and sulfur in the precursors and in chitin/lignin materials.

Sample numberElemental content (%)
NCHS

Pure chitin6.2140.547.36
Pure lignin42.215.023.14

16.0645.258.263.13
26.0444.608.182.23
35.9944.448.141.11
46.0644.328.110.85
56.1743.018.040.51
66.0442.808.040.30
76.1242.828.030.05
84.3243.547.343.11
92.3444.516.613.10
101.6744.456.543.10
111.1944.196.113.06
120.8744.146.053.11
130.3843.935.853.14