Effect of Light Intensity and Wavelength on Biomass Growth and Protein and Amino Acid Composition of Dunaliella salina

Dunaliella salina is a halotolerant, photoautotrophic marine microalga and one of the richest sources natural carotenoids but also shows potential as novel food source with high protein quality. This study sought to optimise production biomass, amino acids from D. salina, alongside using two-stage cultivation approach based on use light different intensities quality, i.e., white, red blue LED light. In stage 1, four white were tested. 2, same either or LEDs applied once exponential growth ceased cells reached stationary phase under in 1. Remarkably, both biomass concentration productivity showed 1.3–1.7-fold increase without medium replenishment, while an ~1.1-fold increase. The acid content index remained unchanged 1 minimum difference was found across intensities. Overall, delivered so-called essential (EAAI) 0.99, light, which has previously been shown carotenoid production, boosted further over above at all