Dietary Supplementation with Cocoa Flavanols Does Not Alter Colon Tissue Profiles of Native Flavanols and Their Microbial Metabolites Established during Habitual Dietary Exposure in C57BL/6J Mice

Metabolism of flavanols (catechins, procyanidins) by gut microbiota has been extensively characterized. Comparatively little is known about accumulation of flavanols and their metabolites in the colon tissues, particularly during chronic exposure to low doses. Mice were fed low doses of cocoa flavan...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 2014-11, Vol.62 (46), p.11190-11199
Main Authors: Goodrich, Katheryn M, Dorenkott, Melanie R, Ye, Liyun, O’Keefe, Sean F, Hulver, Matthew W, Neilson, Andrew P
Format: Article
Language:English
Subjects:
Animal Feed - analysis
Animals
Bacteria - isolation & purification
Bacteria - metabolism
Cacao - metabolism
Catechin - metabolism
chronic exposure
colon
Colon - metabolism
Colon - microbiology
dietary exposure
dietary supplements
Dietary Supplements - analysis
epithelium
flavanols
intestinal microorganisms
Male
metabolism
metabolites
Mice
Mice, Inbred C57BL
Microbiota
Plant Extracts - metabolism
Proanthocyanidins - metabolism
procyanidins
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Summary:Metabolism of flavanols (catechins, procyanidins) by gut microbiota has been extensively characterized. Comparatively little is known about accumulation of flavanols and their metabolites in the colon tissues, particularly during chronic exposure to low doses. Mice were fed low doses of cocoa flavanols for 12 weeks. Supplementation of the control diet with flavanols did not increase colonic tissue accumulation of flavanols nor microbial metabolites versus control. The type of cocoa flavanols did not affect colonic tissue accumulation of native flavanols or metabolites. Total phenolic content of the diets indicated that these results are not explained by background levels of undetected phenolics in the control diet. This is the longest known chronic flavanol feeding study to examine colonic tissue accumulation. Vast differences appear to exist between acute high doses and chronic low doses, to which gut microbiota and epithelium adapt. These results indicate that the fate of flavanols in the colon during chronic exposure is not fully understood.
ISSN:0021-8561
1520-5118
DOI:10.1021/jf503838q