Such a network results in a certain springiness and
cohesiveness, not influenced by the composition ratio. However,
hardness is a material property strongly dependent on solid
content. The ATBC used in this study had a water content of
approximately 99%. Improving solid content is possible by the fill of
gelatin and thus the hardness. After the crosslinking treatment, the
gelatin in the ATBC network offers abundant amino and carboxyl
groups, TG catalyzes covalent bonds ( 3-(g-glutamyl) lysine)
formation, and genipin and EDC modify the amino group and then
crosslinks protein molecules. The increase of molecule junction
density by crosslinking causes the composites to effectively catch
the water molecular and thus enhance the structure stability and
resultant mechanical strength promotion.