Table 2: Colorimetric data of precursors (pure chitin and lignin) and chitin/lignin materials.

Sample numberColorimetric data

Pure chitin85.471.4214.4314.41
Pure lignin41.2610.1625.9258.24

167.3112.5639.5146.93
267.3711.7438.6945.26
368.8210.1135.4243.21
471.088.4632.9238.64
578.774.8726.0829.79
681.293.6322.3224.92
783.951.0319.9618.80
860.6612.1338.2150.08
958.4812.5430.5150.24
1058.0213.1734.7350.86
1157.3013.6234.9851.50
1257.0914.0436.8052.42
1350.9814.1338.2153.50