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On-line control of light intensity in a microalgal bioreactor using a novel aut...

The influence of light intensity upon biomass and fatty acid productivity by the microalga Pavlova lutheri was experimentally studied using a novel device. This device was designed to automatically adjust light intensity in a photobioreactor: it takes on-line measurements of biomass concentration, and was successfully tested to implement a feedback control of light based on the growth rate variation. Using said...

Microalgal reactors: a review of enclosed system designs and performances

One major challenge to industrial microalgal culturing is to devise and develop technical apparata, cultivation procedures and algal strains susceptible of undergoing substantial increases in efficiency of use of solar energy and carbon dioxide. Despite several research efforts developed to date, there is no such thing as “the best reactor system”- defined, in an absolute fashion, as the one able to achieve max...

Influence of medium buffers on growth of the cyanobacterium Anabaena variabilis...

Increase of the yields of eicosapentaenoic and docosahexaenoic acids by the mic...

The high commercial values of eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids have driven a strain-improvement program, aimed at increasing the content of those fatty acids in the microalga Pavlova lutheri (SMBA 60) as parent strain. After a round of mutation using UV-light as mutagenic agent, an isolate strain (tentatively called II#2) was obtained, the EPA and DHA contents of which (in % dry biomass) w...

On-Line Determination of Biomass in a Microalga Bioreactor Using a novel Comput...

A flow injection analysis (FIA) device has been developed, which is able to assay successfully for biomass in a microalga bioreactor. The device is fully computerized and is operated via diluting small aliquots of the culture followed by measuring optical density (OD); this figure is then accurately correlated with biomass, in terms of both cell number and ash-free dry weight, during the entire culture time. Fu...

Screening of methods for dry weight biomass determinations in cultures of micro...

Carbon dioxide and microalgae: its influence on growth and fatty acid compositi...

Determinação de nitratos em culturas de microalgas

Abstract in portuguese and english