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Microbial Biodiversity of a Traditional Food Made from Squash Seeds "NTETE" Consumed in Brazzaville, Republic of Congo

Received: 8 May 2020    Accepted: 25 May 2020    Published: 9 June 2020
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Abstract

The microbial biodiversity of crushed, packaged and cooked (squash) squash seeds sold in Brazzaville markets for consumption has been explored. The enumeration and phenotypic characteristics of microorganisms, in particular: enterobacteria, yeasts, Bacillus, molds and coliforms were revealed, by conventional techniques of microbiology on specific media. The number of control samples not exposed to sale was compared with that of samples to be sold. Amplification by PCR of the 16S rDNA of a few colonies taken from PCA was carried out, followed by sequencing and finally by a bioinformatic analysis on BLASTN. A phylogenetic inference test was carried out by MEGA. 7, preceded by multiple alignment of 16S rRNA gene sequences. It appears from the count in the four markets chosen at random in Brazzaville that the total flora is variable: 101. 103 CFU / g for the Total market; 145. 103 CFU / g for the Bifouiti market; 140. 103 CFU / g for the Talangai market and, 113,103 CFU / g for the Ouenzé market. However, the absence of coliforms was noted in all the samples. Control samples not exposed for sale show the absence of any microorganism. The morphotypes presented different characteristics according to the type and depending on each medium: on Mossel, the bacteria isolated were all Gram +, catalase positive, mobile, isolated or grouped in pair, with yellow, pink or, yellow-pink colonies. PCR revealed by electrophoresis on 0.8% agarose gel the amplified fragments of the 1500Sb rRNA gene of size 1500bp. After sequencing, and analysis by BLASTN, the sequences were submitted to GenBank, the accession numbers are as follows: MK208500, MK208502, MK208503, MK208497, MK209069, MK209070. The alignment of the sequences obtained and their counterparts has revealed and confirmed that this gene is well conserved in the different genera with a very high similarity rate (97-100%). The phylogenetic inference made it possible to have a coherent tree showing different monophyletic groups that are the different genera.

Published in International Journal of Microbiology and Biotechnology (Volume 5, Issue 3)
DOI 10.11648/j.ijmb.20200503.12
Page(s) 83-92
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Squash, Ntete, Microbial Biodiversity, PCR, Sequencing, Phylogenetic Inference

References
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    Etienne Nguimbi, Cyr Jonas Morabandza, Alain Brice Vouidibio Mbozo, Mireille Huguette Belle Mbou, Sayida Norgela Miakassissa, et al. (2020). Microbial Biodiversity of a Traditional Food Made from Squash Seeds "NTETE" Consumed in Brazzaville, Republic of Congo. International Journal of Microbiology and Biotechnology, 5(3), 83-92. https://doi.org/10.11648/j.ijmb.20200503.12

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    Etienne Nguimbi; Cyr Jonas Morabandza; Alain Brice Vouidibio Mbozo; Mireille Huguette Belle Mbou; Sayida Norgela Miakassissa, et al. Microbial Biodiversity of a Traditional Food Made from Squash Seeds "NTETE" Consumed in Brazzaville, Republic of Congo. Int. J. Microbiol. Biotechnol. 2020, 5(3), 83-92. doi: 10.11648/j.ijmb.20200503.12

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    AMA Style

    Etienne Nguimbi, Cyr Jonas Morabandza, Alain Brice Vouidibio Mbozo, Mireille Huguette Belle Mbou, Sayida Norgela Miakassissa, et al. Microbial Biodiversity of a Traditional Food Made from Squash Seeds "NTETE" Consumed in Brazzaville, Republic of Congo. Int J Microbiol Biotechnol. 2020;5(3):83-92. doi: 10.11648/j.ijmb.20200503.12

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  • @article{10.11648/j.ijmb.20200503.12,
      author = {Etienne Nguimbi and Cyr Jonas Morabandza and Alain Brice Vouidibio Mbozo and Mireille Huguette Belle Mbou and Sayida Norgela Miakassissa and Faly Armel Soloka Mabika},
      title = {Microbial Biodiversity of a Traditional Food Made from Squash Seeds "NTETE" Consumed in Brazzaville, Republic of Congo},
      journal = {International Journal of Microbiology and Biotechnology},
      volume = {5},
      number = {3},
      pages = {83-92},
      doi = {10.11648/j.ijmb.20200503.12},
      url = {https://doi.org/10.11648/j.ijmb.20200503.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmb.20200503.12},
      abstract = {The microbial biodiversity of crushed, packaged and cooked (squash) squash seeds sold in Brazzaville markets for consumption has been explored. The enumeration and phenotypic characteristics of microorganisms, in particular: enterobacteria, yeasts, Bacillus, molds and coliforms were revealed, by conventional techniques of microbiology on specific media. The number of control samples not exposed to sale was compared with that of samples to be sold. Amplification by PCR of the 16S rDNA of a few colonies taken from PCA was carried out, followed by sequencing and finally by a bioinformatic analysis on BLASTN. A phylogenetic inference test was carried out by MEGA. 7, preceded by multiple alignment of 16S rRNA gene sequences. It appears from the count in the four markets chosen at random in Brazzaville that the total flora is variable: 101. 103 CFU / g for the Total market; 145. 103 CFU / g for the Bifouiti market; 140. 103 CFU / g for the Talangai market and, 113,103 CFU / g for the Ouenzé market. However, the absence of coliforms was noted in all the samples. Control samples not exposed for sale show the absence of any microorganism. The morphotypes presented different characteristics according to the type and depending on each medium: on Mossel, the bacteria isolated were all Gram +, catalase positive, mobile, isolated or grouped in pair, with yellow, pink or, yellow-pink colonies. PCR revealed by electrophoresis on 0.8% agarose gel the amplified fragments of the 1500Sb rRNA gene of size 1500bp. After sequencing, and analysis by BLASTN, the sequences were submitted to GenBank, the accession numbers are as follows: MK208500, MK208502, MK208503, MK208497, MK209069, MK209070. The alignment of the sequences obtained and their counterparts has revealed and confirmed that this gene is well conserved in the different genera with a very high similarity rate (97-100%). The phylogenetic inference made it possible to have a coherent tree showing different monophyletic groups that are the different genera.},
     year = {2020}
    }
    

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  • TY  - JOUR
    T1  - Microbial Biodiversity of a Traditional Food Made from Squash Seeds "NTETE" Consumed in Brazzaville, Republic of Congo
    AU  - Etienne Nguimbi
    AU  - Cyr Jonas Morabandza
    AU  - Alain Brice Vouidibio Mbozo
    AU  - Mireille Huguette Belle Mbou
    AU  - Sayida Norgela Miakassissa
    AU  - Faly Armel Soloka Mabika
    Y1  - 2020/06/09
    PY  - 2020
    N1  - https://doi.org/10.11648/j.ijmb.20200503.12
    DO  - 10.11648/j.ijmb.20200503.12
    T2  - International Journal of Microbiology and Biotechnology
    JF  - International Journal of Microbiology and Biotechnology
    JO  - International Journal of Microbiology and Biotechnology
    SP  - 83
    EP  - 92
    PB  - Science Publishing Group
    SN  - 2578-9686
    UR  - https://doi.org/10.11648/j.ijmb.20200503.12
    AB  - The microbial biodiversity of crushed, packaged and cooked (squash) squash seeds sold in Brazzaville markets for consumption has been explored. The enumeration and phenotypic characteristics of microorganisms, in particular: enterobacteria, yeasts, Bacillus, molds and coliforms were revealed, by conventional techniques of microbiology on specific media. The number of control samples not exposed to sale was compared with that of samples to be sold. Amplification by PCR of the 16S rDNA of a few colonies taken from PCA was carried out, followed by sequencing and finally by a bioinformatic analysis on BLASTN. A phylogenetic inference test was carried out by MEGA. 7, preceded by multiple alignment of 16S rRNA gene sequences. It appears from the count in the four markets chosen at random in Brazzaville that the total flora is variable: 101. 103 CFU / g for the Total market; 145. 103 CFU / g for the Bifouiti market; 140. 103 CFU / g for the Talangai market and, 113,103 CFU / g for the Ouenzé market. However, the absence of coliforms was noted in all the samples. Control samples not exposed for sale show the absence of any microorganism. The morphotypes presented different characteristics according to the type and depending on each medium: on Mossel, the bacteria isolated were all Gram +, catalase positive, mobile, isolated or grouped in pair, with yellow, pink or, yellow-pink colonies. PCR revealed by electrophoresis on 0.8% agarose gel the amplified fragments of the 1500Sb rRNA gene of size 1500bp. After sequencing, and analysis by BLASTN, the sequences were submitted to GenBank, the accession numbers are as follows: MK208500, MK208502, MK208503, MK208497, MK209069, MK209070. The alignment of the sequences obtained and their counterparts has revealed and confirmed that this gene is well conserved in the different genera with a very high similarity rate (97-100%). The phylogenetic inference made it possible to have a coherent tree showing different monophyletic groups that are the different genera.
    VL  - 5
    IS  - 3
    ER  - 

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Author Information
  • Molecular and Cellular Biology Laboratory, Faculty of Sciences et Technology, Marien Ngouabi University, Brazzaville, Republic of Congo; Bioinformatics and molecular Biology Unit, Faculty of Sciences et Technology, Marien Ngouabi University, Brazzaville, Republic of Congo; Research Institute for Natural and Exact Sciences (IRSEN), Avenue de l’Auberge Gascogne Cité Scientifique (Ex. OROSTOM), Brazzaville, Republic of Congo

  • Molecular and Cellular Biology Laboratory, Faculty of Sciences et Technology, Marien Ngouabi University, Brazzaville, Republic of Congo

  • DMolecular and Cellular Biology Laboratory, Faculty of Sciences et Technology, Marien Ngouabi University, Brazzaville, Republic of Congo; Pluridisciplinary Food and Nutrition Research Team (EPRAN), Faculty of Sciences and Technology, Marien Ngouabi University, Brazzaville, Republic of Congo

  • DMolecular and Cellular Biology Laboratory, Faculty of Sciences et Technology, Marien Ngouabi University, Brazzaville, Republic of Congo; Research Institute for Natural and Exact Sciences (IRSEN), Avenue de l’Auberge Gascogne Cité Scientifique (Ex. OROSTOM), Brazzaville, Republic of Congo

  • Molecular and Cellular Biology Laboratory, Faculty of Sciences et Technology, Marien Ngouabi University, Brazzaville, Republic of Congo

  • Molecular and Cellular Biology Laboratory, Faculty of Sciences et Technology, Marien Ngouabi University, Brazzaville, Republic of Congo; Bioinformatics and molecular Biology Unit, Faculty of Sciences et Technology, Marien Ngouabi University, Brazzaville, Republic of Congo; Research Institute for Natural and Exact Sciences (IRSEN), Avenue de l’Auberge Gascogne Cité Scientifique (Ex. OROSTOM), Brazzaville, Republic of Congo

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