This research presents a metabolic engineering approach using Escherichia coli to produce higher alcohols including isobutanol, 1-butanol, 2-methyl-1-butanol, 3-methyl-1-butanol and 2-phenylethanol from glucose, a renewable carbon source.
Follow this link to learn more: http://www.nature.com/nature/journal/v451/n7174/abs/nature06450.html