Improving Biorefineries with Bubbles (IMAGE) Tohoku University Caption Researchers have developed a new method for the pretreatment of organic material, such as maize plants, which could lead to more efficient production of biofuels and biochemicals. Credit Tohoku University 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.