Bioreactor (IMAGE) University of California - San Diego Caption For the human digestion study, algae were grown in a large stainless steel fermentation tank, similar to fermentation tanks seen at beer breweries. A smaller bench-top fermentation tank, or bioreactor, is pictured. Credit Frank Fields, UC San Diego Usage Restrictions Must be used in conjunction with algae and digestion study. 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.