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A systematic literature review of the effect of anthocyanins on gut microbiota populations

Igwe, EO, Charlton, KE, Probst, YC, Kent, K ORCID: 0000-0002-5330-7044 and Netzel, ME 2018 , 'A systematic literature review of the effect of anthocyanins on gut microbiota populations' , Journal of Human Nutrition and Dietetics , doi: 10.1111/jhn.12582.

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Abstract

Background: Evidence has shown that anthocyanins, a subclass of polyphenol,are metabolised in the gut, modulate bacterial species and exert bioactiveeffects through this interaction.Methods: A systematic literature review was undertaken to determine thelevel of current evidence for the association between anthocyanin intake andchanges in gut microbiota populations. The studies included were alsoassessed for the different techniques used in microbiota determination. Followingthe PRISMA (Preferred Reporting Items for Systematic Reviews andMeta-Analyses) guidelines, scientific databases, including Scopus, PubMed,ScienceDirect, Web of Science and MEDLINE, were searched up to June2017. Details on population/sample, study design, intervention/control,dosage and method of microbiota determination were extracted.Results: Six studies (three in vitro, two animal and one human trials) wereincluded in the review, which showed that anthocyanins induced a significantproliferative effect on Bifidobacterium spp., known for their wide use inprobiotics and for the treatment of irritable bowel syndrome. There was alsoan observed inhibition of Clostridium histolyticum, which was shown to bepathogenic in humans. The depth of analysis is an important considerationfor the choice of microbiota determination technique with respect to a comprehensive,high-resolution microbiota analysis or analysis of the mainmicrobiota taxa.Conclusions: Very limited research has been carried out in the area ofanthocyanins and gut microbiota; beneficial effects have generally beenobserved, and further clinical trials in humans are needed to confirmchanges to gut microbes in relation to dietary anthocyanin intake andpotential health benefits.

Item Type: Article
Authors/Creators:Igwe, EO and Charlton, KE and Probst, YC and Kent, K and Netzel, ME
Keywords: systematic literature review, anthocyanins, gut microbiota
Journal or Publication Title: Journal of Human Nutrition and Dietetics
Publisher: Blackwell Publishing Ltd
ISSN: 0952-3871
DOI / ID Number: 10.1111/jhn.12582
Copyright Information:

Copyright 2018 The British Dietetic Association Ltd.

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