Sodium ion interaction with psyllium husk (Plantago sp.)

Jimoh, M.A.; MacNaughtan, W.; Williams, H.E.L.; Greetham, D.; Linforth, R.L.; Fisk, Ian D.

Abstract

The nature of and factors effecting sodium interactions with psyllium were investigated in vitro. In a batch extraction system, psyllium mucilage gel retained at least 50% of sodium across a range of concentrations (5–300 mg sodium per g psyllium) and pH (2–10) environments. FTIR and Na NMR analyses of psyllium gels indicated that binding was complex with non-specific multi-site interactions. The potential use of psyllium husk as a binding agent for the reduction of bioavailable sodium was therefore evaluated. The binding of sodium at physiologically relevant conditions (pH 1.2 (stomach) and 6.8 (intestine)) was studied in a gastrointestinal tract (GIT) pH simulated model. Results show consistently high sodium retention (∼50%) across the GIT model and less than 20% loss of bound sodium under the simulated intestinal pH conditions after repeated washings.

Citation

Jimoh, M., MacNaughtan, W., Williams, H., Greetham, D., Linforth, R., & Fisk, I. D. (2016). Sodium ion interaction with psyllium husk (Plantago sp.). Food and Function, 7(9), 4041-4047. https://doi.org/10.1039/C6FO00785F

• Journal Article Type: Article
• Acceptance Date: Aug 18, 2016
• Online Publication Date: Aug 31, 2016
• Publication Date: Sep 1, 2016
• Deposit Date: Nov 4, 2016
• Publicly Available Date: Nov 4, 2016
• Journal: Food and function
• Electronic ISSN: 2042-6496
• Publisher: Royal Society of Chemistry
• Peer Reviewed: Peer Reviewed
• Volume: 7
• Issue: 9
• Pages: 4041-4047
• DOI: https://doi.org/10.1039/C6FO00785F
• Public URL: https://nottingham-repository.worktribe.com/output/802947
• Publisher URL: http://pubs.rsc.org/en/Content/ArticleLanding/2016/FO/C6FO00785F#!divAbstract
• Additional Information: : This document is Similarity Check deposited; : I. D. Fisk (ORCID); : I. D. Fisk (ResearcherID); : The Royal Society of Chemistry has an exclusive publication licence for this journal; OPEN ACCESS: This article is freely available. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence (CC BY 3.0); : Single-blind; : Received 27 May 2016; Accepted 18 August 2016; Advance Article published 31 August 2016; Version of Record published 14 September 2016