Team:Nevada/Notebook/June/Week2/3

From 2011.igem.org

Revision as of 09:27, 30 June 2011 by Hoffmatt (Talk | contribs)





                     Week 2 - June 5-11
                     -----------------------

                             Media








Week 2-Previous                                                                                                                                                         Week 3
Week 2 - June 5-11
-----------------------------

E. Coli


Cyano

Assay for ethanol detection. Simple one-step assay takes ethanol and NAD+ into acetylaldahyde and NADH with use of alcohol Deh (ADH) enzyme. Final NADH concentration can be determined using its molar extinction coefficient and absorbance at 340.0 nm, and is proportionate to initial ethanol concetration. Ethanol concentrations ranging from 0.05mM-0.25mM were assayed with 173U/mL ADH. Results: Final NADH concentrations were calculated to be off by a factor of ten due to unexpectedly low absorbancies. Assay was repeated with increased ethanol concentrations (0.5-10mM), but absorbancies remained lower than expected. Disscussion: It was determined that this assay was now sensitive enough for the range of ethanol concentrations that will need to be detected in our project, therefore we will use other means of ethanol detection using simple primary alcohol detection methods using oxidizing reagents.

Media
Week 3- June 12-18
----------------------------------------------

E. Coli

Cyano

Enzymology