Effect of nitrogen limitation on biochemical composition and photosynthetic performance for fed-batch mixotrophic cultivation of microalga Spirulina platensis

Bioresource Technology
Xiaoting LiHaoxuan Wei

Abstract

In this study, the effect of nitrogen limitation on microalgal growth, biochemical composition and photosynthetic performance was investigated in fed-batch mixotrophic cultivation of microalga Spirulina platensis, compared with that in autotrophic cultivation. The microalgal biomass productivity was greatly enhanced by mixotrophic cultivation. With nitrogen limitation, the mixotrophic culture accelerated the degradation of microalgal pigments and proteins to supply intracellular nitrogen for maintaining higher biomass productivity, simultaneously accumulating more carbohydrates. The mixotrophic cultivation amplified the adverse effect of nitrogen limitation on the microalgal photosynthetic performance in comparison with autotrophic cultivation. This fed-batch mixotrophic cultivation is an effective strategy for enhancing biomass productivity and total carbohydrates yield under nitrogen limited conditions.

Citations

Apr 6, 2021·Applied Microbiology and Biotechnology·Lihao JiLiming Liu
Jun 30, 2021·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Lieke RiadiYalun Arifin
Aug 1, 2021·The Science of the Total Environment·Cesar E Solís-SalinasDulce María Arias

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