Abstract：
:To clarify the effect of type of foods on the intestinal environment, Far East Asian- (FEA; rich in rice starch, soy protein and soy oil) and Far East Asian marine- (FEAM; rich in rice starch, fish meal, fish oil and brown alga) modelled diets and sucrose, casein and beef tallow-rich (SCB) diet were prepared. After the 2-week administration of diets in rats, caecal organic acids and putrefactive compounds (ammonia, indole, phenol and H2S, which are regarded as putative risk factors for tumours) were determined. The caecal microbiota was also analyzed using denaturing gradient gel electrophoresis and pyrosequencing with bar-coded primers targeting the bacterial 16S rRNA gene. Levels of n-butyrate, acetate, indole and phenol were high in rats fed FEA. On the other hand, H2S was clearly suppressed by both FEA and FEAM comparing with SCB. These results suggest that FEAM is preferable to FEA for optimal intestinal environment and host health. Both microbial analyses showed that the diversity of microbiota in the FEAM group was lower than in the other diet groups. Ratio of Firmicutes, Bacteroidetes and Proteobacteria in the SCB group was about 5:4:1. Firmicutes, particularly Lachnospiraceae, was promoted by FEA and FEAM.
journal_name
Appl Microbiol Biotechnoljournal_title
Applied microbiology and biotechnologyauthors
An C,Kuda T,Yazaki T,Takahashi H,Kimura Bdoi
10.1007/s00253-014-5535-8subject
Has Abstractpub_date
2014-05-01 00:00:00pages
4701-9issue
10eissn
0175-7598issn
1432-0614journal_volume
98pub_type
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