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Dietary Isomalto/Malto‐Polysaccharides Increase Fecal Bulk and Microbial Fermentation in Mice
Author(s) -
Mistry Rima H.,
Borewicz Klaudyna,
Gu Fangjie,
Verkade Henkjan J.,
Schols Henk A.,
Smidt Hauke,
Tietge Uwe J. F.
Publication year - 2020
Publication title -
molecular nutrition and food research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.495
H-Index - 131
eISSN - 1613-4133
pISSN - 1613-4125
DOI - 10.1002/mnfr.202000251
Subject(s) - lachnospiraceae , feces , butyrate , food science , gut flora , prebiotic , fermentation , roseburia , cecum , bacteroides , polysaccharide , biology , excretion , chemistry , biochemistry , microbiology and biotechnology , bacteria , lactobacillus , genetics , 16s ribosomal rna , gene , firmicutes , ecology
Scope The prevalence of metabolic‐syndrome‐related disease has strongly increased. Nutritional intervention strategies appear attractive, particularly with novel prebiotics. Isomalto/malto‐polysaccharides (IMMPs) represent promising novel prebiotics that promote proliferation of beneficial bacteria in vitro. The present study investigates for the first time the in vivo effects of IMMP in mice. Methods and results C57BL/6 wild‐type mice received control or IMMP‐containing (10%, w/w) diets for 3 weeks. IMMP leads to significantly more fecal bulk (+26%, p < 0.05), higher plasma non‐esterified fatty acids (colorimetric assay, +10%, p < 0.05), and lower fecal dihydrocholesterol excretion (mass spectrometry, −50%, p < 0.05). Plasma and hepatic lipid levels (colorimetric assays following lipid extraction) are not influenced by dietary IMMP, as are other parameters of sterol metabolism, including bile acids (gas chromatography/mass spectrometry). IMMP is mainly fermented in the cecum and large intestine (high‐performance anion exchange chromatography). Next‐generation sequencing demonstrates higher relative abundance of Bacteroides and butyrate producers ( Lachnospiraceae, Roseburia Odoribacter ) in the IMMP group. Conclusion The combined results demonstrate that IMMP administration to mice increases fecal bulk and induces potentially beneficial changes in the intestinal microbiota. Further studies are required in disease models to substantiate potential health benefits.