Image 2 (IMAGE) Nanyang Technological University Caption A cross-section view of brewers’ spent grain, a by-product of the beer-making industry, being broken down by a fungus, Rhizopus oligosporus, to unlock its rich protein potential. Credit NTU Singapore Usage Restrictions No restrictions. License Public Domain 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.