Fabrication Of Thin Tissue Grafts Using Collagen/Gelatin/Alginate Composite
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Abstract
Background: The development of biomimetic scaffolds is a primary objective in soft tissue engineering. Natural biopolymers such as collagen, gelatin, and alginate possess excellent biocompatibility but often lack the necessary mechanical stability or optimal fluid-handling capacity when utilized individually.
Objective: This study aims to fabricate and characterize a novel thin tissue graft utilizing a ternary collagen/gelatin/alginate composite to synergistically overcome individual material limitations for soft tissue regeneration and wound healing applications.
Methods: Composite thin films were fabricated using a solution blending and freeze-drying methodology. The resulting scaffolds were comprehensively evaluated for their microstructural architecture via scanning electron microscopy (SEM) , fluid-handling capacity via swelling ratio in phosphate-buffered saline , and chemical integration via Fourier Transform Infrared (FTIR) spectroscopy. Furthermore, antimicrobial efficacy was assessed against Escherichia coli and Staphylococcus aureus using agar well diffusion assays.
Results: SEM analysis confirmed a highly interconnected, porous architecture suitable for deep cellular infiltration. FTIR spectroscopy verified the successful structural integration of the constituent biopolymers, highlighting the retention of essential functional groups. The composite demonstrated a progressive swelling profile indicative of excellent wound exudate management capacity , alongside distinct, dose-dependent antimicrobial activity against both tested bacterial strains.
Conclusion: The blended collagen/gelatin/alginate thin films possess the requisite structural integrity, fluid-handling capacity, and bioactivity. This ternary composite demonstrates significant potential as a conformable, highly effective scaffold for soft tissue engineering and advanced wound care.
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References
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