Team:DTU-Denmark/Bioreactor

From 2013.igem.org

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Protocol [https://2013.igem.org/Team:DTU-Denmark/Methods/Bioreactor Bioreactor]
Protocol [https://2013.igem.org/Team:DTU-Denmark/Methods/Bioreactor Bioreactor]
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For reasons that are not understood, the experiment became aerobic in each chamber just after 12:00, and the lab technician began sparging the reactors at a low rate to keep the reaction anaerobic. 
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Experiment timeline
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* 10:00 Set up experiment; begin sparging with nitrogen to make the medium anaerobic
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* 11:00 End sparging
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* 14:00 Take first sample
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* 22:00 Take last sample
[[File:Dtu-bioreactor.jpg|left|thumb|600px|This image shows the bioreactor set up to run in triplicate.]]
[[File:Dtu-bioreactor.jpg|left|thumb|600px|This image shows the bioreactor set up to run in triplicate.]]
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== Discussion ==
== Discussion ==
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There were several sources of error in this experiment.  Most importantly, the experiment became aerobic in each chamber at 12:00, and the lab technician began sparging the reactors.   
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The concentrations of nitrous oxide were slightly higher at the beginning of the experiment compared to the end, but none of the readings showed a large deviation from the control reading.   
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Revision as of 14:10, 4 October 2013

Bioreactor

Contents


Description

The purpose of this experiment is to determine the long term characteristics of the growth of our Nir transformant anaerobically. Specifically, we measure nitrous oxide production over a period of 10 hours.

The experiment was performed on September 17th.

Methods

Protocol Bioreactor

For reasons that are not understood, the experiment became aerobic in each chamber just after 12:00, and the lab technician began sparging the reactors at a low rate to keep the reaction anaerobic.

Experiment timeline

  • 10:00 Set up experiment; begin sparging with nitrogen to make the medium anaerobic
  • 11:00 End sparging
  • 14:00 Take first sample
  • 22:00 Take last sample
This image shows the bioreactor set up to run in triplicate.

Results

Nitrous oxide concentrations measured in the bioreactor at the beginning (t=14:00) and end (t=22:00) of the experiment.

Time [N2O] Replicate 1 [N2O] Replicate 2 [N2O] Replicate 3 [[N2O] Distilled Water Control
14:00 1.84 mg/L 1.64 mg/L 1.60 mg/L N/A
22:00 1.43 mg/L 1.44 mg/L 1.50 mg/L 1.65 mg/L

Discussion

The concentrations of nitrous oxide were slightly higher at the beginning of the experiment compared to the end, but none of the readings showed a large deviation from the control reading.