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      The effect of soymilk intake on the fecal microbiota, particularly Bifidobacterium species, and intestinal environment of healthy adults: a pilot study

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          Abstract

          The influence of soymilk on the fecal microbiota, particularly Bifidobacterium species, and metabolic activities were investigated in eight healthy adult humans. During the soymilk intake period, the number of bifidobacteria in feces was significantly higher (p<0.05) on day 14 of the soymilk intake period than before the intake period, whereas that of Enterobacteriaceae was significantly lower (p<0.05) on days 7 and 14 of the soymilk intake period than before the intake period. In an investigation of Bifidobacterium at the species or group level, the numbers of all species and groups studied slightly increased during the soymilk intake period. These results show that the intake of soymilk may contribute to improving the intestinal environment.

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          Molecular microbial diversity of an anaerobic digestor as determined by small-subunit rDNA sequence analysis.

          J J Godon, E Zumstein, P DABERT … (1997)
          The bacterial community structure of a fluidized-bed reactor fed by vinasses (wine distillation waste) was analyzed. After PCR amplification, four small-subunit (SSU) rDNA clone libraries of Bacteria, Archaea, Procarya, and Eucarya populations were established. The community structure was determined by operational taxonomic unit (OTU) phylogenetic analyses of 579 partial rDNA sequences (about 500 bp long). A total of 146 OTUs were found, comprising 133, 6, and 7 from the Bacteria, Archaea, and Eucarya domains, respectively. A total of 117 bacterial OTU were affiliated with major phyla: low-G+C gram-positive bacteria, Cytophaga-Flexibacter-Bacteroides, Proteobacteria, high-G+C gram-positive bacteria, and Spirochaetes, where the clone distribution was 34, 26, 17, 6, and 4%, respectively. The other 16 bacterial OTUs represent 13% of the clones. They were either affiliated with narrow phyla such as Planctomyces-Chlamydia, green nonsulfur bacteria, or Synergistes, or deeply branched on the phylogenetic tree. A large number of bacterial OTUs are not closely related to any other hitherto determined sequences. The most frequent bacterial OTUs represents less than 5% of the total bacterial SSU rDNA sequences. However, the 20 more frequent bacterial OTUs describe at least 50% of these sequences. Three of the six Archaea OTUs correspond to 95% of the Archaea population and are very similar to already known methanogenic species: Methanosarcina barkeri, Methanosarcina frisius, and Methanobacterium formicicum. In contrast, the three other Archaea OTUs are unusual and are related to thermophilic microorganisms such as Crenarchaea or Thermoplasma spp. Five percent of the sequences analyzed were chimeras and were removed from the analysis.
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            Quantitative PCR with 16S rRNA-gene-targeted species-specific primers for analysis of human intestinal bifidobacteria.

            J Fujimoto, Takahiro Matsuki, Toshihiko Takada … (2003)
            A highly sensitive quantitative PCR detection method has been developed and applied to the distribution analysis of human intestinal bifidobacteria by combining real-time PCR with Bifidobacterium genus- and species-specific primers. Real-time PCR detection of serially diluted DNA extracted from cultured bifidobacteria was linear for cell counts ranging from 10(6) to 10 cells per PCR assay. It was also found that the method was applicable to the detection of Bifidobacterium in feces when it was present at concentrations of >10(6) cells per g of feces. Concerning the distribution of Bifidobacterium species in intestinal flora, the Bifidobacterium adolescentis group, the Bifidobacterium catenulatum group, and Bifidobacterium longum were found to be the three predominant species by examination of DNA extracted from the feces of 46 healthy adults. We also examined changes in the population and composition of Bifidobacterium species in human intestinal flora of six healthy adults over an 8-month period. The results showed that the composition of bifidobacterial flora was basically stable throughout the test period.
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              Getting better with bifidobacteria.

              Paul van Helden, James Higgins, Erich Fitzgerald … (2004)
              Article 0 comments Cited 65 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (nlm-ta): Biosci Microbiota Food Health
                Journal ID (iso-abbrev): Biosci Microbiota Food Health
                Journal ID (publisher-id): BMFH
                Title: Bioscience of Microbiota, Food and Health
                Publisher: BMFH Press
                ISSN (Print): 2186-6953
                ISSN (Electronic): 2186-3342
                Publication date (Electronic): 15 October 2016
                Publication date (Print): 2017
                Volume: 36
                Issue: 1
                Pages: 33-37
                Affiliations
                [1 ]Laboratory of Food Hygiene, Faculty of Applied Life Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
                [2 ]Laboratory of Agricultural Food, Faculty of Applied Life Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
                [3 ]Nakagaki Consulting Engineer & Co., Ltd., 10-39 Otorikitamachi, Nishi-ku, Sakai-shi, Osaka 593-8328, Japan
                Author notes
                *Corresponding author. Tomohiko Fujisawa, Laboratory of Food Hygiene, Faculty of Applied Life Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan. E-mail: fujisawa@ 123456nvlu.ac.jp
                Article
                Publisher ID: 16-017
                DOI: 10.12938/bmfh.16-017
                PMC ID: 5301055
                SO-VID: 8fcd2a89-5db0-4367-8d00-3e1799b4a73b
                Copyright © BMFH Press
                License:

                This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (by-nc-nd) License. (CC-BY-NC-ND 4.0: http://creativecommons.org/licenses/by-nc-nd/4.0/ )

                History
                Date received : 15 July 2016
                Date accepted : 29 September 2016
                Categories
                Subject: Note

                Keywords: bifidobacteria,soymilk,fecal microbiota,fecal metabolic activity,human
                Data availability:
                Keywords: bifidobacteria, soymilk, fecal microbiota, fecal metabolic activity, human

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