Fig. 1From: Effects of different cultivation conditions on the production of β-cyclocitral and β-ionone in Microcystis aeruginosaFormation of β-ionone and β-cyclocitral via enzymatic or non-enzymatic oxidative cleavage of the carotenoid β–carotene or echinenone (main carotenoids found in cyanobacteria): yellow arrow indicates oxidation of the double bonds in the carotenoid backbone. Echinenone is converted in hydroxylated analogous variants. Based on Michel Havaux 2013Back to article page