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New insights into xanthan synergistic interactions with konjacglucomannan: a novel interaction mechanism proposal

Abbaszadeh, A.; Macnaughtan, William; Sworn, G.; Foster, Tim J.

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Authors

A. Abbaszadeh

William Macnaughtan

G. Sworn

Tim J. Foster



Abstract

The interactions of xanthans containing precise acetate and pyruvate concentration with Konjac gluco-mannan (KGM) were studied at different sodium chloride and polymer concentrations. A new unifiedmodel of the interaction is proposed, taking into account previous models in the literature. This study sug-gests that the interactions occur by two distinct mechanisms dependent on xanthan conformation. These interactions are not mutually exclusive and may co-exist and hence produce complicated traces. Consequently two types of gel which melt at different temperature ranges can be formed. Depending on the xanthan helix coil transition temperature, one or both of the synergistic states may exist in the hydrocolloid blend. The proposed model has been tested rheologically and using differential scanning calorimetry by varying salt concentration and using samples containing different functional group concentrations.

Citation

Abbaszadeh, A., Macnaughtan, W., Sworn, G., & Foster, T. J. (2016). New insights into xanthan synergistic interactions with konjacglucomannan: a novel interaction mechanism proposal. Carbohydrate Polymers, 144, https://doi.org/10.1016/j.carbpol.2016.02.026

Journal Article Type Article
Acceptance Date Feb 8, 2016
Online Publication Date Feb 10, 2016
Publication Date Jun 25, 2016
Deposit Date Jul 11, 2017
Publicly Available Date Jul 11, 2017
Journal Carbohydrate Polymers
Print ISSN 0144-8617
Electronic ISSN 1879-1344
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 144
DOI https://doi.org/10.1016/j.carbpol.2016.02.026
Keywords Xanthan, Konjac mannan, Helix, Random coil, Models of interaction
Public URL https://nottingham-repository.worktribe.com/output/793523
Publisher URL http://www.sciencedirect.com/science/article/pii/S0144861716300820?via%3Dihub
Contract Date Jul 11, 2017

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