Ali Demirci, Penn State (IMAGE) Penn State Caption Researcher Ali Demirci adjusts a bioreactor in which potato waste is being used to produce bioethanol with a novel process that simultaneously employs mold and yeast to convert starch to sugar and sugar to ethanol. Credit Dimerci Lab Usage Restrictions Non commercial use only License Licensed content 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.