Sand dollar skeleton as templates for bacterial cellulose coating and apatite precipitation

In this work, the skeleton of Sand Dollar ( Clypeaster subdepressus) was coated by bacterial cellulose (BC) produced by Gluconacetobacter hansenii and subsequently coated with calcium phosphate (apatite). The skeleton of sand dollar is composed of magnesium calcite ((Ca,Mg)CO 3 ) and exhibits an hie...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials science 2010-10, Vol.45 (19), p.5252-5256
Main Authors: Barreiro, A. M., Recouvreux, D. O. S., Hotza, D., Porto, L. M., Rambo, C. R.
Format: Article
Language:English
Subjects:
Apatite
Bacteria
Calcite
Calcite crystals
Calcium
Calcium phosphates
Cell adhesion
Cell adhesion & migration
Cellulose
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Clypeaster subdepressus
Coating
Coatings
Crystallography and Scattering Methods
Gluconacetobacter
Glucose metabolism
Halides
Magnesium
Materials Science
Phosphate minerals
Phosphate rock
Phosphates
Polymer Sciences
Polymerization
Porosity
Rain and rainfall
Regeneration (physiology)
Sand
Solid Mechanics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this work, the skeleton of Sand Dollar ( Clypeaster subdepressus) was coated by bacterial cellulose (BC) produced by Gluconacetobacter hansenii and subsequently coated with calcium phosphate (apatite). The skeleton of sand dollar is composed of magnesium calcite ((Ca,Mg)CO 3 ) and exhibits an hierarchically porous structure with interconnected porosity. After coating, the small-sized pores were partially covered by cellulose microfibrils, where apatite particles were homogeneously deposited. The pore geometry of sand dollar is adequate for bone regeneration, allows cell migration through its large cells and permit vascularization through the small pores. Moreover, BC/apatite coating offers a bioactive surface for cell adhesion.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-010-4567-4