Phosphorus and sulphur affecting the growth, nutrient uptake and amino acids composition in Dunaliella salina

IF 3.7 3区生物学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY

Process Biochemistry Pub Date : 2025-04-02 DOI:10.1016/j.procbio.2025.03.026

Yixing Sui , Gleison de Souza Celente , Laurens Bosscher Navarro , Pablo Garcia-Trinanes , Patricia J. Harvey

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Abstract

The potential of microalga Dunaliella salina as a protein source and in bioremediation application is still underdeveloped, despite its known carotenoids overproduction. This study focused on investigating the effects of phosphorus (P) and sulphur (S) concentrations on the biomass growth and essential amino acids profile of D. salina PLY DF15 (CCAP 19/41). Additionally, its nutrient removal capacity was analysed in a bioremediation context. From all tested P and S concentrations, D. salina resulted in high-quality protein with essential amino acid index (EAAI) between 1.6 and 1.7 (EAAI ≥ 1 meets FAO/WHO standard) with little variations from all P and S concentrations. In a bioremediation context, D. salina also showed great potential for nutrients removal and recovery with high adaptability to varying nutrient conditions, with overall more than 80 % and 100 % nitrogen (N) and P recovery, respectively. The full recovery of S however was only achieved at lower S levels. Overall D. salina shows great potential in providing high-quality protein for human consumption using economic and sustainable cultivation approach.

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来源期刊

Process Biochemistry 生物-工程：化工

CiteScore

8.30

自引率

4.50%

发文量

374

审稿时长

53 days

期刊介绍： Process Biochemistry is an application-orientated research journal devoted to reporting advances with originality and novelty, in the science and technology of the processes involving bioactive molecules and living organisms. These processes concern the production of useful metabolites or materials, or the removal of toxic compounds using tools and methods of current biology and engineering. Its main areas of interest include novel bioprocesses and enabling technologies (such as nanobiotechnology, tissue engineering, directed evolution, metabolic engineering, systems biology, and synthetic biology) applicable in food (nutraceutical), healthcare (medical, pharmaceutical, cosmetic), energy (biofuels), environmental, and biorefinery industries and their underlying biological and engineering principles.