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Type: Journal article
Title: Acute effects of a dietary non-starch polysaccharide supplement on cognitive performance in healthy middle-aged adults
Author: Best, T.
Howe, P.
Bryan, J.
Buckley, J.
Scholey, A.
Citation: Nutritional Neuroscience, 2015; 18(2):76-86
Publisher: Taylor & Francis
Issue Date: 2015
ISSN: 1028-415X
Statement of
Talitha Best, Peter Howe, Janet Bryan, Jonathan Buckley, Andrew Scholey
Abstract: Objective: Certain plant polysaccharides may provide psychological health benefits. The aim of this study was to evaluate whether they can acutely improve mood and cognitive function. Method: In a randomized, double-blind, placebo-controlled, between subjects design trial, 73 middle-aged adults consumed 4 g of a proprietary mixture of non-starch polysaccharides (NSPs) (Ambrotose® complex), a rice flour placebo, or a sucrose control. Participants completed testing at baseline and 30 minutes postconsumption. Acute effects of consumption on mood, cognition, and blood glucose were evaluated during mental tests designed to induce mental fatigue. Results: Significant improvement in recognition and working memory performance was observed in the group that consumed NSP compared with placebo or sucrose. Improvements in memory performance following NSP intake were independent of changes in blood glucose. Discussion: This is the first report of acute behavioural improvement following plant polysaccharide intake in healthy middle-aged adults under conditions of mental fatigue. The findings suggest that certain NSP may enhance memory performance through mechanisms other than elevated blood glucose.
Keywords: Memory; cognition; middle-aged adults; saccharides; arabinogalactan; plant polysaccharides; dietary polysaccharides
Description: Published online: 03 Jan 2014.
Rights: © W. S. Maney & Son Ltd 2015
DOI: 10.1179/1476830513Y.0000000101
Grant ID:
Appears in Collections:Aurora harvest 8
Molecular and Biomedical Science publications

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