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Investigation of Ca-alginate hydrogel rheological behaviour in conjunction with immobilized yeast cell growth dynamics

Authorized Users Only
2007
Authors
Pajić-Lijaković, Ivana
Plavšić, Milenko B.
Nedović, Viktor
Bugarski, Branko
Article (Published version)
Metadata
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Abstract
The rheological model is developed to elucidate the mechanism of Ca-alginate microbead deformation in the course of cell growth within. It is a complex process influenced by relaxation of the expanded polymer network inside a bead, and forces generated by cell growth inside the bead and interactions between solvent, network parts and cells as well. The resulting effects are measured experimentally by estimating isotropic volumetric deformations of beads with yeast cells as function of time and cell concentration per bead. The mathematical model of the process is developed based on a modified general Zener model with fractional derivatives. It is particularly suitable for incorporating effects of different nature also during different stages of such complex process development. The results of theoretical analyses using the model developed and comparison with experimental values obtained, indicate a high impact of partial decomposition, i.e. plastic response of polymer network inside a b...ead due to cell growth, on bead deformation. For comparison, corresponding deformation measurements and modelling were performed on the same network system exposed to swelling in the solvent, but without the cells. In this case elastic forces are dominant, indicating different mechanism of relaxation without the influence of cells, in agreement with previous conclusions.

Keywords:
microbead / yeast / alginates / cell growth / gel deformation mechanism
Source:
Journal of Microencapsulation, 2007, 24, 5, 420-429
Publisher:
  • Taylor & Francis Ltd, Abingdon

DOI: 10.1080/02652040701362843

ISSN: 0265-2048

PubMed: 17578732

WoS: 000247967000003

Scopus: 2-s2.0-34347217518
[ Google Scholar ]
19
19
URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1159
Collections
  • Radovi istraživača / Researchers’ publications (TMF)
Institution/Community
Tehnološko-metalurški fakultet
TY  - JOUR
AU  - Pajić-Lijaković, Ivana
AU  - Plavšić, Milenko B.
AU  - Nedović, Viktor
AU  - Bugarski, Branko
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1159
AB  - The rheological model is developed to elucidate the mechanism of Ca-alginate microbead deformation in the course of cell growth within. It is a complex process influenced by relaxation of the expanded polymer network inside a bead, and forces generated by cell growth inside the bead and interactions between solvent, network parts and cells as well. The resulting effects are measured experimentally by estimating isotropic volumetric deformations of beads with yeast cells as function of time and cell concentration per bead. The mathematical model of the process is developed based on a modified general Zener model with fractional derivatives. It is particularly suitable for incorporating effects of different nature also during different stages of such complex process development. The results of theoretical analyses using the model developed and comparison with experimental values obtained, indicate a high impact of partial decomposition, i.e. plastic response of polymer network inside a bead due to cell growth, on bead deformation. For comparison, corresponding deformation measurements and modelling were performed on the same network system exposed to swelling in the solvent, but without the cells. In this case elastic forces are dominant, indicating different mechanism of relaxation without the influence of cells, in agreement with previous conclusions.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Journal of Microencapsulation
T1  - Investigation of Ca-alginate hydrogel rheological behaviour in conjunction with immobilized yeast cell growth dynamics
EP  - 429
IS  - 5
SP  - 420
VL  - 24
DO  - 10.1080/02652040701362843
ER  - 
@article{
author = "Pajić-Lijaković, Ivana and Plavšić, Milenko B. and Nedović, Viktor and Bugarski, Branko",
year = "2007",
abstract = "The rheological model is developed to elucidate the mechanism of Ca-alginate microbead deformation in the course of cell growth within. It is a complex process influenced by relaxation of the expanded polymer network inside a bead, and forces generated by cell growth inside the bead and interactions between solvent, network parts and cells as well. The resulting effects are measured experimentally by estimating isotropic volumetric deformations of beads with yeast cells as function of time and cell concentration per bead. The mathematical model of the process is developed based on a modified general Zener model with fractional derivatives. It is particularly suitable for incorporating effects of different nature also during different stages of such complex process development. The results of theoretical analyses using the model developed and comparison with experimental values obtained, indicate a high impact of partial decomposition, i.e. plastic response of polymer network inside a bead due to cell growth, on bead deformation. For comparison, corresponding deformation measurements and modelling were performed on the same network system exposed to swelling in the solvent, but without the cells. In this case elastic forces are dominant, indicating different mechanism of relaxation without the influence of cells, in agreement with previous conclusions.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Journal of Microencapsulation",
title = "Investigation of Ca-alginate hydrogel rheological behaviour in conjunction with immobilized yeast cell growth dynamics",
pages = "429-420",
number = "5",
volume = "24",
doi = "10.1080/02652040701362843"
}
Pajić-Lijaković, I., Plavšić, M. B., Nedović, V.,& Bugarski, B.. (2007). Investigation of Ca-alginate hydrogel rheological behaviour in conjunction with immobilized yeast cell growth dynamics. in Journal of Microencapsulation
Taylor & Francis Ltd, Abingdon., 24(5), 420-429.
https://doi.org/10.1080/02652040701362843
Pajić-Lijaković I, Plavšić MB, Nedović V, Bugarski B. Investigation of Ca-alginate hydrogel rheological behaviour in conjunction with immobilized yeast cell growth dynamics. in Journal of Microencapsulation. 2007;24(5):420-429.
doi:10.1080/02652040701362843 .
Pajić-Lijaković, Ivana, Plavšić, Milenko B., Nedović, Viktor, Bugarski, Branko, "Investigation of Ca-alginate hydrogel rheological behaviour in conjunction with immobilized yeast cell growth dynamics" in Journal of Microencapsulation, 24, no. 5 (2007):420-429,
https://doi.org/10.1080/02652040701362843 . .

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