| Analysis of Effects of Brown Algal Fermentable Polysaccharides, Alginate and Laminaran, on Rat Cecal Microbiota by FLX-Pyrosequencing. | |
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MedLine Citation:
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PMID: 23183985 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Edible brown algae are a major food material in Far East Asian countries, particularly in Korea and Japan. They contain fermentable dietary fibers, alginic acid (uronic acid polymer) and laminaran (β-1, 3-glucan), that are fermented into organic acids by intestinal bacteria. To clarify the effect of edible algae on intestinal environment, the cecal microbiota of rats fed diets containing no dietary fiber (control), 2% w/w sodium alginate or laminaran for 2 weeks was analyzed using FLX amplicon pyrosequencing with barcoded primers targeting the bacterial 16S rRNA gene. The most abundant phylum was Firmicutes in all groups. Specifically, Allobaculum was dominant in all diet groups. In addition, Bacteroides capillosus (37.1%) was abundant in the alginate group, while Clostridium ramosum (3.14%) and Parabacteroides distasonis (1.36%) were only detected in the laminaran group. Furthermore, rats fed alginate showed simplified microbiota phylotypes compared with others. With respect to cecal chemical compounds, laminaran increased cecal organic acid levels, particularly propionic acid. Alginate increased total cecal organic acids. Cecal putrefactive compounds, such as indole, H(2)S and phenol, were decreased by both alginate and laminaran. These results indicate that edible brown algae can alter the intestinal environment, with the fermentation by intestinal microbiota. |
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Authors:
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Choa An; Takashi Kuda; Takahiro Yazaki; Hajime Takahashi; Bon Kimura |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-11-26 |
Journal Detail:
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Title: Applied and environmental microbiology Volume: - ISSN: 1098-5336 ISO Abbreviation: Appl. Environ. Microbiol. Publication Date: 2012 Nov |
Date Detail:
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Created Date: 2012-11-27 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7605801 Medline TA: Appl Environ Microbiol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Food Science and Technology, Faculty of Marine Science, Tokyo University of Marine Science and Technology, Tokyo 108-8477, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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