Acceleration of the Growth of Escherichia coli

Class: Be210
Group: R1
Members: Birche Fishback (TTK),Rich Dela Rosa (Facilitator),Tammy Mirensky (Presenter),Lee Zeng (Scribe)
Date: May 7, 1999

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Abstract:
The primary goal of this experiment was to accelerate the growth rate of the K-12 strain of Escherichia coli through the addition of nutrients to the media of the standard experiment (10.0 ? 0.1g bacto-tryptone and 5.0 ? 0.1g yeast extract). [11] This was accomplished by the addition of glucose, a carbon source, in the form of corn syrup to the control media while maintaining constant environmental growth conditions.  Additionally, using scientifically published paper [9] a 35.1% increase in growth rate constant was predicted.  One control and two experimental trials were then performed.  The growth rate constant for the control experiment was 0.0188 min-1 ? 4.05%.  The average growth rate constant for the two experimental trials conducted was 0.0239 ? min-1 ? 6.05% thereby yielding a 27.13% increase in the growth rate constant from that of the control experiment.  This percentage increase deviated from the predicted increase by 22.7%.