Abstract
The moisture sorption of ternary mixtures of biopolymer, sugar and water is investigated by means of the Free-Volume-Flory-Huggins (FVFH) theory. The earlier FVFH theory developed for binary mixtures of biopolymer/water and sugar/water has to be modified to account for two effects: 1) the change in the glass temperature due to the non-ideal mixing of biopolymer and 2) inhibition of self-association of the polymer if the mixture is quenched very fast into the glassy state. The modified FVFH theory forms a good basis for predicting moisture sorption for quaternary mixtures of biopolymers, di-, mono-saccharides and water - which can be viewed as a model for vegetables and fruits. (c) 2013 Elsevier Ltd. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 186-194 |
| Journal | Food Hydrocolloids |
| Volume | 32 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2013 |
Keywords
- glass-transition temperature
- frozen state transitions
- vapor sorption
- poly(ethylene glycol)
- amorphous mixtures
- sucrose
- behavior
- prediction
- polymers
- crystallization