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Light emitting diodes applied in Synechococcus nidulans cultures: Effect on growth, pigments production and lipid profiles

Duarte, Jessica Hartwig, de Souza, Carolina Oliveira, Druzian, Janice Izabel, Costa, Jorge Alberto Vieira
Bioresource technology 2019 v.280 pp. 511-514
Synechococcus, biodiesel, biomass, carotenoids, chlorophyll, color, durability, energy, fluorescent lighting, fuel production, light emitting diodes, lipid composition, microalgae, pigments, saturated fatty acids
Researches about light emitting diodes (LEDs) as energy source in microalgae cultivations has been growing in recent years due to its spectral quality, durability and reduced energy consumption. In this study, green, red and yellow LEDs were evaluated as energy source in Synechococcus nidulans LEB 115 cultures. Productivities and specific growth rates were up to 2.5 times greater than in cultures using fluorescent light. The different LED colors evaluated did not influence the chlorophyll, carotenoid or lipid productions. Biomass cultivated with LEDs showed high amounts of saturated fatty acids (above 48%), which is desirable for biodiesel production. In addition to the Synechococcus nidulans LEB 115 growth stimulation, the application of green, red and yellow LEDs in the cultivations produces potential biomass for biodiesel synthesis and other industrial interest biomolecules utilization.