Abstract

An increasing global concern on healthy foods is a major effort to drive the worldwide nutraceuticals market. Dietary supplements sector is receiving great importance in developed regions of the World. The global nutraceuticals market raised to $205.39 billion in 2016, and it is expected to reach $297 billion by 2023 at a compound annual growth rate (CAGR) of 6.5% over 2018-2023. The current global start-ups concerning the demand for nutraceuticals need to focus research on exploration of robust secondary metabolites from microbial resources having high nutraceutical value for the future benefit of human beings. Microalgal metabolites are witnessing increasing demand in globally for their use in nutraceutical applications [1]. A few algal species namely Chlorella, Haematococcus, Dunaliella, and Spirulina offer a wide range of secondary metabolites for the development of healthier food products [2,3]. Even though, alga produces secondary metabolites such as alkaloids, flavonoids, glycosides, terpenoids, and phenazines [4]. In addition to secondary metabolites, algae contain proteins, carbohydrates, lipids, polysaccharides, polyols, and phycobiliproteins etc [5-8]. These secondary metabolites are numerously used in various health food sectors [9].