Cogongrass (Imperata cylindrica) Leaf Extract Counteracts the Effects of Nitrogen Limitation and Induces Changes in Biomass, Lipid, and Fatty Acid Profile in Chlorella vulgaris UMT-M1 and Scenedesmus sp. KS-2

This study assessed the feasibility of unhydrolyzed cogongrass as a medium fortificant for cultivation of Chlorella vulgaris UMT-M1 and Scenedesmus sp. KS-2. Nitrogen-limited media supplemented with 0.1–0.5% (w/v) cogongrass leaf extract induced changes in lipid content and produced effects that appear to counteract the effects of nitrogen depletion, restoring lipid and fatty acid content to levels similar to nitrogen-replete media while biomass...