Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 498213
Title Sugar and polyol solutions as effective solvent for biopolymers
Author(s) Sman, R.G.M. van der
Source Food Hydrocolloids 56 (2016). - ISSN 0268-005X - p. 144 - 149.
DOI http://dx.doi.org/10.1016/j.foodhyd.2015.12.001
Department(s) FBR Food Technology
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2016
Keyword(s) Biopolymer melting - Hydrogen bonding - Reformulation - State diagram
Abstract

Ternary mixtures of biopolymers, sugars or polyols and water can be treated as a pseudo binary system with respect to melting of the biopolymer. Sugar and polyol solutions can be treated as an effective solvent, characterized by the density of hydroxyl groups available for intermolecular hydrogen bonding. Such a treatment has been shown earlier for the glass transitions of the ternary mixtures. Now we have analysed the melting behaviour of biopolymers in these ternary mixtures. If the melting points are plotted as function of the density of hydroxyl groups, all data for a variety of sugars and polyols collapse to a single curve. This master curve coincides with the prediction of the melting line for biopolymer/water mixtures as follows from Flory's theory. Such behaviour has been found for starch, gelatin, soy and sunflower proteins.

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