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The Bone Matrix

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Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide an adherent surface for inorganic salt crystals. Both components of the matrix, organic and inorganic, contribute to the unusual properties of bone. Without collagen, bones would be brittle and shatter easily. Without mineral crystals, bones would flex and provide little support. This can be observed by an experiment: when the minerals of a bone are dissolved by soaking the bone in...
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Related Experiment Video

Updated: Jun 10, 2025

Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications
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Hydroxyapatite synthesis and characterization from marine sources: A comparative study.

Krishna Meghal Balabadra1, Suganya Panneer Selvam1, Ramya Ramadoss1

  • 1Department of Oral Biology, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, 600077, India.

Journal of Oral Biology and Craniofacial Research
|October 11, 2024
PubMed
Summary

Hydroxyapatite (HAP) from orange mud crab shells shows better structural and antibacterial properties than HAP from fourfinger threadfin fish bones. This marine-derived HAP is suitable for biomedical uses.

Keywords:
BiocompatibleCrab shellFishboneHemocompatibilityHydroxyapatiteRegeneration

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Area of Science:

  • Biomaterials Science
  • Marine Biotechnology
  • Biomedical Engineering

Background:

  • Hydroxyapatite (HAP) is a biocompatible material extensively utilized in biomedical applications.
  • Marine organisms are increasingly recognized as viable sources for HAP synthesis.
  • This study investigates HAP derived from specific marine species.

Purpose of the Study:

  • To compare the characteristics of HAP synthesized from orange mud crab shells (Scylla olivacea) and fourfinger threadfin fish bones (Eleutheronema tetradactylum).
  • To evaluate the structural, hemocompatibility, and antibacterial properties of marine-derived HAP.
  • To establish a foundation for exploring other marine sources for HAP.

Main Methods:

  • HAP synthesis from Scylla olivacea shells and Eleutheronema tetradactylum bones.
  • Characterization using Scanning Electron Microscopy (SEM) for structure.
  • Hemocompatibility testing and antibacterial assays.
  • Elemental analysis via Energy-Dispersive X-ray Spectroscopy (EDS).

Main Results:

  • SEM revealed clustered, biofilm-like structures in synthesized HAP.
  • HAP from crab shells demonstrated superior structural properties compared to fish bone HAP.
  • Both HAP sources exhibited good hemocompatibility and effective antibacterial activity, with crab HAP showing slightly better performance.
  • EDS confirmed consistent elemental composition for HAP from both sources.

Conclusions:

  • Hydroxyapatite derived from Scylla olivacea shells possesses superior properties over that from Eleutheronema tetradactylum bones.
  • Marine-derived HAP shows significant potential for biomedical applications.
  • This research encourages further exploration of diverse marine species for HAP synthesis.