Outline of Algal Residue (IMAGE) Tokyo Institute of Technology Caption Algal residue, commonly discarded after extraction of oil, can be used to produce industrial chemicals alkyl levulinate and alkyl lactate. Credit Tokyo Institute of Technology 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.