abstract |
Provided is an isopropyl alcohol-producing Escherichia coli , which comprises: a system that produces isopropyl alcohol together with the deactivation of the transcription regulator GntR; and a coenzyme group having an enzymatic activity manifestation pattern that maintains or reinforces the isopropyl alcohol production that accompanies the deactivation of GntR. Also provided is a method for producing isopropyl alcohol, which includes the production of isopropyl alcohol from a plant-derived starting material using this isopropyl alcohol-producing Escherichia coli . Further provided is a method for producing acetone, which includes bringing the isopropyl alcohol obtained by the above-mentioned production method into contact with a compound oxide that contains zinc oxide and at least one oxide of group 4 of the Periodic Table of Elements and that has been prepared by coprecipitation. Additionally provided is a method for producing propylene, which includes bringing the isopropyl alcohol and acetone obtained by the above-mentioned production methods into contact with a solid acid substance and a hydrogenation catalyst containing Cu as the catalysts. |