TissueDB/Materials/Collagen Fiber
License: Public domain by Louisa Howard
Collagen fiber is a naturally derived protein filament. Type I collagen for scaffolds and biomaterials is extracted from collagen-rich animal tissues, chiefly tendon and skin, from several species;[1] bovine skin and Achilles tendon are a documented source.[2] It is supplied as fiber bundles with anisotropic, direction-dependent stiffness. Thermal denaturation of connective-tissue collagen measured by differential scanning calorimetry at fast heating rates falls in the range 62–67 °C, but denaturation is a multi-step, heating-rate-dependent process that can occur at 55–60 °C on slow heating.[3] Freeze–thaw destabilises collagen fibrils through ice formation expanding the space inside the fibril, lowering the denaturation temperature by 1.4–1.6 °C after a single cycle.[4] It can be used in medical simulation to represent fibrous, load-bearing soft tissue.
Tissues
| Tissue | Visual | Tactile | Simulator | Notes |
|---|---|---|---|---|
| Ligament | Native collagen fiber bundles; anisotropic, load-bearing fibers. | |||
| Tendon | Bovine Achilles tendon fibers. |
Troubleshooting
- High-temperature sterilisation — collagen denatures well below autoclave temperature: 62–67 °C by differential scanning calorimetry at fast heating rates, and from 55–60 °C on slow heating.[3] Use silicone where autoclave sterilisation is required.
- Extended room-temperature storage — no source in this collection characterises how collagen fiber keeps at ambient temperature. Store cold and prepare fresh each session, or use a gelatin alternative.
- Repeated freeze-thaw cycles — freezing destabilises collagen fibrils by ice formation expanding the space inside the fibril; the denaturation temperature falls by 1.4–1.6 °C after one freeze/thaw.[4] Prepare fresh material each session.
Alternatives
| Alternative | Best For | Trade-offs |
|---|---|---|
| Gelatin | Temperature-stable simulation requiring similar haptic feedback | Shorter shelf life at ambient temperature |
| Silicone | Trainers requiring room-temperature storage and repeated reuse | Loss of biological fidelity |
References
- ↑ Terzi A, Gallo N, Bettini S, Sibillano T, Altamura D, Madaghiele M, De Caro L, Valli L. Sub- and supramolecular X-ray characterization of engineered tissues from equine tendon, bovine dermis, and fish skin type-I collagen. Macromol Biosci. 2020 May;20(5):e2000017. doi:10.1002/mabi.202000017. PMID 32163225.
- ↑ Mathangi Ramakrishnan K, Babu M, Mathivanan, Jayaraman V, Shankar J. Advantages of collagen based biological dressings in the management of superficial and superficial partial thickness burns in children. Ann Burns Fire Disasters. 2013 Jun 30;26(2):98-104. PMID 24133405.
- ↑ 3.0 3.1 Purslow PP. Contribution of collagen and connective tissue to cooked meat toughness; some paradigms reviewed. Meat Sci. 2018 Oct;144:127-134. doi:10.1016/j.meatsci.2018.03.026. PMID 29636208.
- ↑ 4.0 4.1 Ozcelikkale A, Han B. Thermal destabilization of collagen matrix hierarchical structure by freeze/thaw. PLoS One. 2016;11(1):e0146660. doi:10.1371/journal.pone.0146660. PMID 26765741.
| Authors | Arturopelayo |
|---|---|
| License | CC-BY-SA-4.0 |
| Cite as | Arturopelayo (2026). "TissueDB/Materials/Collagen Fiber". Appropedia. Retrieved August 25, 2026. |