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

Torcello-Gómez, Amelia and Foster, Tim (2014) Interactions between cellulose ethers and a bile salt in the control of lipid digestion of lipid-based systems. Carbohydrate Polymers, 113 . pp. 53-61. ISSN 1879-1344

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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.

Item Type: Article
Keywords: Dietary fibre, Cellulose ethers, Bile salts, Oil–water interface, Interfacial tension, Differential scanning calorimetry
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Biosciences > Division of Food Sciences
Identification Number: 10.1016/j.carbpol.2014.06.070
Depositing User: Foster, Timothy
Date Deposited: 06 Sep 2017 10:24
Last Modified: 18 Oct 2017 17:17
URI: http://eprints.nottingham.ac.uk/id/eprint/45454

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