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Influence of interfacial and bulk properties of cellulose ethers on lipolysis of oil-in-water emulsions

Torcello-Gómez, Amelia; Foster, Tim


Amelia Torcello-Gómez

Tim Foster


Cellulose ethers are usually used as secondary emulsifiers. Different types of commercial hydroxypropylmethylcellulose (HPMC) have been used here as the main emulsifier of oil-in-water emulsions to probe their impact on the lipid digestibility under simulated intestinal conditions. The droplet size distribution and -potential of the emulsions subjected to in-vitro lipolysis have been compared with that of control samples (non-digested). The lipolysis has been quantified over time by means of the pH-stat method. The displacement of HPMC from the oil–water interface by bile salts has been assessed by interfacial tension technique. Results show that HPMC delays the lipid digestion of emulsions regardless of the Mw and methoxyl content. The destabilisation of emulsions under intestinal conditions as well as the resistance of HPMC to be displaced from the emulsion interface by bile salts may contribute to this feature. This provides new insights into the mechanisms whereby dietary fibre reduces fat absorption.


Torcello-Gómez, A., & Foster, T. (2016). Influence of interfacial and bulk properties of cellulose ethers on lipolysis of oil-in-water emulsions. Carbohydrate Polymers, 144, doi:10.1016/j.carbpol.2016.03.005

Journal Article Type Article
Acceptance Date Mar 3, 2016
Online Publication Date Mar 5, 2016
Publication Date Jun 25, 2016
Deposit Date Jun 16, 2017
Journal Carbohydrate Polymers
Print ISSN 0144-8617
Electronic ISSN 1879-1344
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 144
Keywords Dietary fiber, Cellulose ethers, Emulsion, Interfacial tension, Bile salts, Lipid digestion
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