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- Title
Effect of Repeated Consumption of Partially Hydrolyzed Guar Gum on Fecal Characteristics and Gut Microbiota: A Randomized, Double-Blind, Placebo-Controlled, and Parallel-Group Clinical Trial.
- Authors
Yasukawa, Zenta; Inoue, Ryo; Ozeki, Makoto; Okubo, Tsutomu; Takagi, Tomohisa; Honda, Akira; Naito, Yuji
- Abstract
Partially hydrolyzed guar gum (PHGG) is a water-soluble dietary fiber and is used in solid and liquid food to regulate gut function. The aim of this study was to investigate effects of PHGG on bowel movements (stool form and frequency), plasma bile acids, quality of life, and gut microbiota of healthy volunteers with a tendency toward diarrhea, i.e., irritable bowel syndrome diarrhea (IBS-D)-like symptoms. A randomized, double-blind, placebo-controlled, and parallel trial was performed on 44 healthy volunteers (22 males, 22 females, 41.9 ± 6.3 years old (average ± SD)) with minimum 7 bowel movements every week, wherein above 50% of their stool was between the Bristol stool scale (BSS) value of 5 and 6. Intake of the PHGG for 3 months significantly improved stool form, evaluated using BSS, and had no effects on stool frequency. BSS was significantly normalized in the group consuming the PHGG compared with the placebo. Comprehensive fecal microbiome analysis by the 16S rRNA-sequence method detected significant changes in the ratio of some bacteria, such as an increase of Bifidobacterium (p < 0.05) in the PHGG group. Our results suggest that intake of PHGG improves human stool form via regulating intestinal microbiota.
- Subjects
BIFIDOBACTERIUM; DEFECATION; DIARRHEA; FECES; DIETARY fiber; IRRITABLE colon; QUALITY of life; RNA; STATISTICAL sampling; GUT microbiome; RANDOMIZED controlled trials; TREATMENT effectiveness; BLIND experiment
- Publication
Nutrients, 2019, Vol 11, Issue 9, p2170
- ISSN
2072-6643
- Publication type
Article
- DOI
10.3390/nu11092170