Abstract
Continuing dissolution of solid calcium l-lactate pentahydrate in saturated aqueous solutions following addition of solid sodium d-gluconate corresponding to a gluconate/lactate ratio around three was found to result in homogeneous solutions supersaturated with calcium d-gluconate by a factor of seven, from which calcium d-gluconate monohydrate precipitated only slowly. In contrast, dissolution of calcium d-gluconate monohydrate by sodium l-lactate in aqueous solution with the reverse lactate/gluconate ratio also around three did not result in similar homogeneous solutions on the route to solid calcium l-lactate pentahydrate. This increasing supersaturation of calcium d-gluconate during dissolution of calcium l-lactate in aqueous sodium d-gluconate may enhance calcium bioavailability. The dissolution overshooting depends on competitive kinetics and is also of interest in modeling biomineralization and in designing novel food products with increased calcium bioavailability.
| Originalsprog | Engelsk |
|---|---|
| Tidsskrift | Food & Function |
| Vol/bind | 5 |
| Udgave nummer | 1 |
| Sider (fra-til) | 85-91 |
| Antal sider | 7 |
| ISSN | 2042-6496 |
| DOI | |
| Status | Udgivet - jan. 2014 |