Sforza Eleonora

Researcher, Università di Padova

14th February
Session: TECHNOLOGIES AND INNOVATIONS IN PRODUCTION AND HARVESTING OF MICRO AND MACRO-ALGAE

Speech: How to control the microalgal biomass composition in a continuous photobioreactor: effects of light regime and residence time on carbohydrate content

Authors: Eleonora Sforza, Elena Barbera, Alberto Bertucco

Microalgae and cyanobacteria are able to accumulate molecules of interest, such as carbohydrates, protein and lipids. The common batch method to evaluate growth capabilities is strongly limited by a number of factors, such as the acclimation of preinoculum and a changing biomass concentration over time, which makes it more difficult to explain the results. Conversely, in a continuous system operated at steady-state, biomass production is constant as it is well acclimated to environmental conditions. This allows to better describe kinetics and physiology by a quantitative approach. At steady state, the biomass composition is also stable, which is particularly interesting in view of possible commercialization of specific products.  In this work, as a case study, the effectiveness of the continuous system as a method to exploit microalgae for carbohydrate production is presented, accounting for the effects of light regime and residence time.

 

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