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A Method for Avoiding the Xanthoproteic-associated Discolouration in Reprecipitated (Nitric-acid-digested) Hydroxyapatite Prepared from Mammalian Bone Tissue

Michael R. Mucalo ; Chemistry Department, University of Waikato, Private Bag 3105, Hamilton, New Zealand
David L. Foster ; Chemistry Department, University of Waikato, Private Bag 3105, Hamilton, New Zealand

Puni tekst: engleski, pdf (333 KB) str. 509-517 preuzimanja: 700* citiraj
APA 6th Edition
Mucalo, M.R. i Foster, D.L. (2004). A Method for Avoiding the Xanthoproteic-associated Discolouration in Reprecipitated (Nitric-acid-digested) Hydroxyapatite Prepared from Mammalian Bone Tissue. Croatica Chemica Acta, 77 (3), 509-517. Preuzeto s https://hrcak.srce.hr/102952
MLA 8th Edition
Mucalo, Michael R. i David L. Foster. "A Method for Avoiding the Xanthoproteic-associated Discolouration in Reprecipitated (Nitric-acid-digested) Hydroxyapatite Prepared from Mammalian Bone Tissue." Croatica Chemica Acta, vol. 77, br. 3, 2004, str. 509-517. https://hrcak.srce.hr/102952. Citirano 25.02.2021.
Chicago 17th Edition
Mucalo, Michael R. i David L. Foster. "A Method for Avoiding the Xanthoproteic-associated Discolouration in Reprecipitated (Nitric-acid-digested) Hydroxyapatite Prepared from Mammalian Bone Tissue." Croatica Chemica Acta 77, br. 3 (2004): 509-517. https://hrcak.srce.hr/102952
Harvard
Mucalo, M.R., i Foster, D.L. (2004). 'A Method for Avoiding the Xanthoproteic-associated Discolouration in Reprecipitated (Nitric-acid-digested) Hydroxyapatite Prepared from Mammalian Bone Tissue', Croatica Chemica Acta, 77(3), str. 509-517. Preuzeto s: https://hrcak.srce.hr/102952 (Datum pristupa: 25.02.2021.)
Vancouver
Mucalo MR, Foster DL. A Method for Avoiding the Xanthoproteic-associated Discolouration in Reprecipitated (Nitric-acid-digested) Hydroxyapatite Prepared from Mammalian Bone Tissue. Croatica Chemica Acta [Internet]. 2004 [pristupljeno 25.02.2021.];77(3):509-517. Dostupno na: https://hrcak.srce.hr/102952
IEEE
M.R. Mucalo i D.L. Foster, "A Method for Avoiding the Xanthoproteic-associated Discolouration in Reprecipitated (Nitric-acid-digested) Hydroxyapatite Prepared from Mammalian Bone Tissue", Croatica Chemica Acta, vol.77, br. 3, str. 509-517, 2004. [Online]. Dostupno na: https://hrcak.srce.hr/102952. [Citirano: 25.02.2021.]

Sažetak
A procedure for producing kilogram quantities of a biomedically suitable reprecipitated hydroxyapatite (HAp) powder, which is free of the xanthoproteic-associated discolouration caused by nitric acid interaction with the protein content in bones during digestion, has been developed. Essentially bones were defatted by boiling and then pyrolysed at 1000 °C to burn off the collagenous proteins and produce flakey bleached bones. This bone was then crushed and ground and digested in nitric acid solution to produce digest solutions free of the highly staining orange colouration normally associated with nitric acid digestions of bone material.. Finely divided, white solids could then be reprecipitated as usual from the digests by addition of NaOH solution under a nitrogen atmosphere with heating and stirring at 70 °C of the precipitate to enable its maturation into an HAp phase. The products derived from this procedure were characterised using spectroscopic, microscopic and particle sizing techniques. These analyses showed the resultant powders to be low crystallinity hydroxyapatite of consistent morphology and which possessed either acceptably low or below detection limit levels of heavy metals so rendering it as a potentially valuable source of powder for biomedical applications such as plasma spraying or for implant or prosthesis manufacture.

Ključne riječi
hydroxyapatite; mammalian bone; pyrolysis; reprecipitation; xanthoproteic discolouration; biomedical

Hrčak ID: 102952

URI
https://hrcak.srce.hr/102952

Posjeta: 899 *