Aluminium inhibition of calcium carbonate crystal growth: In vitro studies related to shell-repair in the snail Helix pomatia L

Autor:	Michael Reineskog
Rok vydání:	1990
Předmět:	Pharmacology biology Precipitation (chemistry) Immunology Metallurgy Nucleation chemistry.chemical_element Snail Helix pomatia biology.organism_classification In vitro chemistry.chemical_compound Calcium carbonate Membrane chemistry Aluminium biology.animal Biophysics
Zdroj:	Comparative Biochemistry and Physiology Part C: Comparative Pharmacology. 96:353-356
ISSN:	0306-4492
DOI:	10.1016/0742-8413(90)90020-a
Popis:	1. Aluminium (Al) was found to have an inhibitory effect on the in vitro recalcification of demineralized shell-repair membranes from the snail Helix pomalia L. The Ca contents of the membranes were inversely proportional to the Al dose. 2. In a pH-stat system the precipitation of CaCO3 was reduced by A1Cl3 in a dose-dependent manner. The reduction was aggravated by the addition of citrate. Addition of demineralized repair membranes to this system was without effect. 3. It is concluded that Al, probably by adhering to the crystals (no effects on the initial nucleation being observed), has the ability to interfere with the precipitation of CaCO3. The increased inhibition caused by Al together with citrate seems attributable to the formation of Ca-citrate complexes as almost no Al-citrate complex is formed at the pH (7.95) used in the pH-stat experiments.
Databáze:	OpenAIRE
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