Difference between revisions of "Team:Paris Bettencourt/Notebook/VitaminB12"

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   </ul>
 
   </ul>
 
   </li>
 
   </li>
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  <li>Successfully grew <i>P. freudenreichii</i> in MEA at 30°C, in aerobic conditions.</li>
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</ul>
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<h2 class="date">July 30th</h2>
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<img style="float:right" src="https://static.igem.org/mediawiki/2015/f/f7/PB_B12_Result_plates.png" width="400px">
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<ul>
 +
  <li>Tested the YEL+agar medium with the following strains:
 +
  <ul>
 +
    <li><i>P. freudenreichii</i></li>
 +
    <li><i>Lactobacillus lactis</i></li>
 +
    <li><i>E. coli</i></li>
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    <li><i>Lactobacillus plantarum</i></li>
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    <li><i>Saccharomyces cerevisiae</i></li>
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  </ul></li>
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  <li>Result (after 24 hours):
 +
 
</ul>
 
</ul>
  

Revision as of 21:16, 9 September 2015

July

July 28th

  • Received Propionibacterium freudenreichii subsp. shermanii CIRM BIA1 from the INRA Rennes CIRM collection.
  • Made the following media:
    • MEA (waking lyophilized bacteria up), 1 L
      ProductQuantity
      BHI broth37 g
      Soja peptone5 g
      Yeast extract5 g
      Glucose3 g
      WaterFill to 1 L
    • YEL (propionibacteria growth medium), 1 L
      ProductQuantity
      Sodium lactate (60% syrup)21.4 g
      Tryptone10 g
      Yeast extract10 g
      K2HPO4, 3 H2O328 mg
      MnSO4, H2O56 mg
      WaterFill to 1 L
  • Successfully grew P. freudenreichii in MEA at 30°C, in aerobic conditions.

July 30th

  • Tested the YEL+agar medium with the following strains:
    • P. freudenreichii
    • Lactobacillus lactis
    • E. coli
    • Lactobacillus plantarum
    • Saccharomyces cerevisiae
  • Result (after 24 hours):

References

Biedendieck, R., Malten, M., Barg, H., Bunk, B., Martens, J. H., Deery, E., ... & Jahn, D. (2010). Metabolic engineering of cobalamin (vitamin B12) production in Bacillus megaterium. Microbial biotechnology, 3(1), 24-37.
B12 measurement: http://iioab.org/Vol2%282%292011/Karmi%20et%20al-IIOABJ-2%20%282%29-2011-23-32p.pdf