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International Journal of Bioprinting Hydrogels for 3D bioprinting

Table 2. Summary of hydrogel structural formulas (reaction mechanism), printing scaffolds, and the FDA approval status of the
hydrogels applicable to tissue engineering and regenerative medicine
Hydrogel For example FDA approval status
Structural or reaction mechanism Scaffolds (Yes/No)
Sodium alginate (SA) Yes

Reproduced with permission .
[49]
Chitosan (CS) Yes

Reproduced with permission .
[88]
Gelatin Yes

[90]
Reproduced with permission .
Silk fibrin (SF) Yes

Reproduced with permission .
[34]

Volume 9 Issue 5 (2023) 226 https://doi.org/10.18063/ijb.759