AF5 BEST BASIC SCIENCE POSTER AWARD FINALIST Fabrication, Characterization And Human Mesenchymal Stromal Cell Attachment Property Of A Novel Tricalcium Phosphate-Chitosan-Fucoidan (TCP-Ch-Fu) Biocomposite Scaffold For Bone Tissue Engineering Application Subramaniam Puvaneswary, Sepehr Talebian, Hanumantha Rao Balaji Raghavendran, Malliga Raman Murali Background: Biocomposites have been widely used to create scaffolds that regenerate damaged tissue. A tricalcium phosphate-chitosan-fucoidan biocomposite scaffold (TCP-Ch-Fu) using cost-effective freeze-drying technique is described for potential bone regeneration. Methods: The functional groups, elemental composition, phase purity, surface morphology, porosity, and in vitro human-derived mesenchymal stromal cell attachment were examined using Fourier transform infrared spectroscopy (FTIR), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), field emission scanning electron microscopy (FESEM), and atomic force microscopy (AFM) respectively. Results: The FTIR, EDS, and XRD peaks confirmed the phase purity and specific functional groups of TCP-Ch-Fu. FESEM revealed that the cross-section pattern of the scaffold surface was honey-comb-like structure with pore size of 26–40 µm, and surface area of 82.65 m²/g. BET and AFM confirmed the pore pattern and surface roughness of the material. Furthermore, FESEM also established the cytocompatibility of the material under cell culture conditions. Conclusion: Altogether, the characterization and cytocompatibility studies revealed that this novel scaffold may be suitable for bone tissue engineering applications.