Estimation of the model parameters for theuptake of a two-metal system by Debaryomycesoccidentalis var. personii
- M. Cristina Romero
- Inés Urrutia
- S. Córdoba
- Hugo Reynoso
Publisher: Servicio de Publicaciones ; Universidad de Cádiz
ISBN: 84-7786-948-0
Year of publication: 2001
Pages: 157-160
Type: Book chapter
Abstract
The Cd and Zn uptake by yeast occured in two stages, a surfaceadsorption plus a membrane transport. The modcl pe.rameters were the adsorption constant, the carrier rate and the ratio of the rate constants for each metal. Based on them, Cd promoted the reverse carrier reaction for Zn transport, leading to an inhibition in thc uptakc; although Cd transport was not influenced by Zn. This differences was due to thc cssential and nonesscntial nature of both ions.