Magnified Image of Cornstalk Particle (IMAGE) Purdue University Caption A magnified image of a cornstalk particle shows the many tiny pores that pretreatment -- a phase of the ethanol production process -- opens up. These pores create more surface area for subsequent reactions to take place and give enzymes better access to cellulose, the source for cellulosic ethanol. Researchers said this information could help in establishing an economic method for industrial production of cellulosic ethanol. Credit Purdue University photo/Meijuan Zeng Usage Restrictions None 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.