Effects of irradiation and pH on fluorescence properties and flocculation of extracellular polymeric substances from the cyanobacterium Chroococcus minutus

- Stability of EPS under different irradiation and pH conditions was studied.
- EPS form unstable floc under UV irradiation but stable floc under solar irradiation.
- EPS flocculate under strong acid condition.
- EPS was stable under neutral and alkaline conditions.