Stability of microcystins from cyanobacteria: effect of light on decomposition and isomerization

The stability of microcystins was investigated under photolysis conditions. Microcystin, which is a product of the cyanobacteria, is found in many water reservoirs. Because of its geometric isomeric structure, microcystin is very stable even under adverse conditions. Only additions of pigments from cyanobacteria can speed up its decomposition wherein the rate of degradation is determined by the amount of pigments introduced. Other research studies suggest that photolysis in the presence of pigments lead to the detoxification of the compound.