Abstract:
:Yeast mannan (YM) is an indigestible water-soluble polysaccharide of the yeast cell wall. In vitro fecal fermentation studies showed that YM could exhibit a notable prebiotic effect. The aim of this randomized, double-blind, placebo-controlled study was to assess the efficacy of YM intake on the intestinal environment and skin condition. One hundred and ten healthy female subjects aged 30-49 years were supplemented with YM or placebo for eight weeks. Skin dryness was set as the primary endpoint. No side effects were observed during the study. Microbiota analyses revealed that YM intake selectively increased the relative abundance of Bacteroides thetaiotaomicron and Bacteroides ovatus compared to that by placebo. Feces and urine analyses showed that YM intake lowered the concentration of fecal p-cresol, indole, and skatole, and elevated urinal equol levels compared to those in placebo. Furthermore, YM supplementation ameliorated subjective skin dryness. This study suggests that YM intake could promote beneficial Bacteroides and improve the intestinal environment and skin condition.
journal_name
Nutrientsjournal_title
Nutrientsauthors
Tanihiro R,Sakano K,Oba S,Nakamura C,Ohki K,Hirota T,Sugiyama H,Ebihara S,Nakamura Ydoi
10.3390/nu12123673subject
Has Abstractpub_date
2020-11-28 00:00:00issue
12issn
2072-6643pii
nu12123673journal_volume
12pub_type
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