Table 1: Relative content of secondary structure of four groups of silk fibroin scaffolds before degradation (%).

GroupsABCD

Side chain3.793.444.695.35
𝛽 -sheet25.6528.3434.3039.94
Random coil18.2822.6721.1518.15
𝛼 -form17.5610.3710.549.45
Turns34.7235.1829.3327.11