Precise Phototrophic Cultivation of Algae and Cyanobacteria


PSI Photobioreactors are used for precise phototrophic cultivation of algae and cyanobacteria. They feature a unique combination of the cultivator and monitoring device. Light power and spectral composition as well as the temperature and aeration gas composition can be set with a high accuracy. In addition, cultivation conditions can be dynamically varied according to a user defined protocol. Light, temperature, and gas composition can oscillate with various amplitudes and frequencies. The growth of the cultures is monitored by the integrated densitometer (OD 720) that measures light scattering at 720 nm. Chlorophyll content of the culture can also be monitored continuously by the differences of optical densities at 680 and 720 nm (NDVI). The instantaneous physiological state of the culture is measured by the Photosystem II quantum yield (Fm’-Fs)/Fm’.

PSI Photobioreactors are equipped with a flat-vessel design that enables bringing uniform illumination over the whole volume of cultivated culture. The Photobioreactors are currently manufactured in five standard versions differing in the volume of their cultivation vessels: 400 ml, 1000 ml, 3000 ml, 25 L, and 120 L.

Few years ago , PSI released a new product for lab cultivation - the Multi-Cultivator MC 1000-OD, which represents a perfect solution in applications requiring diverse experimental variants in small-scale cultivation of algae, bacteria or cyanobacteria.

In ideal configuration, the high-throughput part of the experiments is performed in the Multi-Cultivator and the results are finalized in our Photobioreactors FMT 150/400, FMT 150/1000 and FMT 150/3000. The large-scale Photobioreactors (25 L or 120 L) may then serve for industrial or semi-industrial production of biomass.

  • Precise cultivation of photoautotrophic microorganisms.
  • Cultivation conditions optimization and yield improvement.
  • Photosynthesis research.
  • Stress physiology, detection of biotic and abiotic stress.
  • Study of diurnal or metabolic rhythms.
  • Study of secondary metabolites production.
  • Eco-toxicological research.
  • Ecological research, microorganisms interactions, population dynamic.
  • Environmental modeling.
  • Synchronous multi-well cultivations
  • Laboratory applications requiring multiple experimental variants
  • Different organism testing and comparing