A review on techno-economic assessment of Spirulina for sustainable nutraceutical, medicinal, environmental, and bioenergy applications

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Global population growth underlies the need to explore alternative materials to address pressing challenges in food security, medicine, energy, and environmental pollution. Spirulina is a nutrient dense cyanobacteria that offers promising solutions to the aforementioned challenges, mainly due to its rich composition of proteins, vitamins, minerals, and bioactive compounds such as β-carotene and phycocyanin. These compounds confer various health benefits, including antioxidant, anticancer, anti-diabetic, antimicrobial, and anti-inflammatory properties, which make Spirulina a valuable dietary and therapeutic supplement. Essential fatty acids and its rapid growth rate also makes Spirulina a potential source of biodiesel for energy related applications. Additionally, Spirulina's high porosity and variable functional groups endow it with remarkable biosorption properties for soil and wastewater remediation applications. The chemical structure and unique properties of Spirulina have been utilized to produce biotemplates for nanomaterials as well as the fabrication of functional composites for various applications. Thus, in this review, we have highlighted the broad potentials of Spirulina in diverse applications, emphasizing its eco-friendliness, economic viability, challenges, and the prospects of its biomass for sustainable, nutraceutical, therapeutic, energy related, and environmental applications.

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