Isolation of Collagen from Cortical Bovine Bone for Preparation of Porous Collagen Sponges
Fabrication of collagen sponges from type I collagen isolated from cortical bovine femur bone is reported. Collagen was extracted with 0.1 M EDTA by refreshing the solution every 24 h for 9 days. Sodium dodecyl sulfate poly-acrylamide gel electrophoresis (SDS-PAGE) demonstrated the isolation of intact pure type I collagen. The sponges were fabricated by freeze-drying and heat-dehydration cross-linking of collagen solution. The resulting sponges showed fibrils arranged in a highly porous network. These sponges can be used for tissue engineering as well as for bone-like composite fabrication.
KeywordsCollagen isolation Sponges Scaffolds Cortical bone
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