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Related Experiment Videos

Biotin production by bifidobacteria

H Noda1, N Akasaka, M Ohsugi

  • 1Department of Food Science, Faculty of Home Economics, Mukogawa Women's University, Nishinomiya, Japan.

Journal of Nutritional Science and Vitaminology
|April 1, 1994
PubMed
Summary

Bifidobacterium strains grow well on BL medium, but yeast extract with glucose limits growth. Oligosaccharides enhance growth and biotin production in Bifidobacterium bifidum.

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Area of Science:

  • Microbiology
  • Nutritional Science
  • Biotechnology

Background:

  • Biotin is an essential vitamin crucial for various metabolic processes.
  • Bifidobacterium species are important probiotics found in the gut microbiome.
  • Optimizing growth and vitamin production in Bifidobacterium is key for probiotic applications.

Purpose of the Study:

  • To investigate biotin production in five strains of Bifidobacterium.
  • To evaluate the impact of different media compositions on Bifidobacterium growth.
  • To determine the role of oligosaccharides in enhancing biotin synthesis.

Main Methods:

  • Culturing five Bifidobacterium strains (B. adolescentis, B. bifidum, B. breve, B. infantis, B. longum) on BL medium and yeast extract medium with glucose.
  • Supplementing yeast extract medium with specific oligosaccharides, including isomaltooligosaccharide.
  • Measuring bacterial growth and quantifying extracellular biotin production.

Main Results:

  • All five Bifidobacterium strains exhibited robust growth on BL medium.
  • Growth was significantly reduced (by half or more) on yeast extract medium with glucose.
  • Bifidobacterium bifidum demonstrated enhanced growth and significant extracellular biotin production when yeast extract medium was supplemented with oligosaccharides.

Conclusions:

  • Yeast extract medium with glucose is suboptimal for the growth of these Bifidobacterium strains.
  • Oligosaccharides, particularly isomaltooligosaccharide, can effectively promote growth and stimulate biotin production in certain Bifidobacterium species.
  • The findings suggest a potential strategy for improving biotin yield in probiotic bacteria through targeted nutritional interventions.

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