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Isolation of calcium‐phosphate crystals of bone by non‐aqueous methods at low temperature
Author(s) -
Kim HyunMan,
Rey Christian,
Glimcher Melvin J.
Publication year - 1995
Publication title -
journal of bone and mineral research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.882
H-Index - 241
eISSN - 1523-4681
pISSN - 0884-0431
DOI - 10.1002/jbmr.5650101021
Subject(s) - ashing , fourier transform infrared spectroscopy , transmission electron microscopy , materials science , crystal (programming language) , aqueous solution , matrix (chemical analysis) , analytical chemistry (journal) , diffraction , crystallography , scanning electron microscope , infrared spectroscopy , chemistry , optics , chromatography , nanotechnology , organic chemistry , composite material , programming language , physics , quantum mechanics , computer science
We have developed low temperature nonaqueous solution methods as well as low power plasma ashing for the degradation of the organic matrix of bone powder which have permitted us to obtain bone crystals essentially free of organic matrix constituents without any significant change in their composition, overall structure, or internal short‐range order. We have also been able to disperse the crystals, which has made it possible to examine the isolated crystals by X‐ray diffraction and resolution‐enhanced Fourier transform infrared (FTIR) spectroscopy and isolated single crystals by high resolution transmission electron microscopy (TEM) and electron diffraction. TEM of isolated single crystals of fish, chicken, mouse, and bovine bone have clearly demonstrated that the crystals are very thin plates. No rod or needle‐like crystals were observed in any of the bone samples in the four species studied including the earliest crystals deposited. Although there were variations in the size distribution of the crystals in the different species studied, in general the average crystal dimensions were very similar.