Fermenting Clostridium bacteria (image) University of California - Berkeley Share Print E-Mail Caption UC Berkeley graduate student Zachary Baer works with a fermentation chamber to separate acetone and butanol (top clear layer) from the Clostridium brew at the bottom. The chemicals can be extracted and catalytically altered to make a fuel that burns like diesel. Credit Robert Sanders photo. Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.