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Interactions between cellulose ethers and a bile salt in the control of lipid digestion of lipid-based systems

Torcello-Gómez, Amelia; Foster, Tim

Authors

Amelia Torcello-Gómez M.A.TorcelloGomez@leeds.ac.uk

Tim Foster tim.foster@nottingham.ac.uk



Abstract

In order to gain new insights into the potential of specific dietary fibres to control lipid digestion, the goal of this work is to study the main interactions between commercial cellulose ethers, as dietary fibre, and a bile salt, as an important duodenal component present during the digestibility of lipids. These interactions have been evaluated in two different scenarios found for an oil-in-water emulsion on its transit through the duodenum. Namely, interactions in the continuous phase and competitive adsorption at the oil–water interface have been looked at by means of micro-differential scanning calorimetry (micro-DSC) and interfacial tension (IT). Micro-DSC revealed that the presence of the bile salt affects the thermogelation process of cellulose derivatives, suggesting binding to cellulose ethers. The effect on thermogelation seems to be cellulose type-dependent. IT measurements proved the ability of cellulose ethers to compete for the oil–water interface in the presence of the bile salt. Interactions in the bulk might have an impact on this interfacial scenario. These findings may have implications in the digestion of emulsified lipids, hence providing a springboard to develop new cellulose-based food products with improved functional properties.

Journal Article Type Article
Publication Date Nov 26, 2014
Journal Carbohydrate Polymers
Print ISSN 0144-8617
Electronic ISSN 1879-1344
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 113
APA6 Citation Torcello-Gómez, A., & Foster, T. (2014). Interactions between cellulose ethers and a bile salt in the control of lipid digestion of lipid-based systems. Carbohydrate Polymers, 113, https://doi.org/10.1016/j.carbpol.2014.06.070
DOI https://doi.org/10.1016/j.carbpol.2014.06.070
Keywords Dietary fibre, Cellulose ethers, Bile salts, Oil–water interface, Interfacial tension, Differential scanning calorimetry
Publisher URL http://www.sciencedirect.com/science/article/pii/S0144861714006468
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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