Arthrospira platensis is a non toxic edible cyanobacterium which contains high amounts of various valuable nutrients such as essential amino acids, essential fatty acids and carotenoids. It also contains compounds having medicinal effects, such as phycocyanin and different polysaccharides. The present study examined the effect of nitrogen, phosphorus, sulfur and salinity on biomass, lipid, protein, carbohydrate and phycocyanin productivities of Arthrospira platensis. Decreasing nitrogen to 50 % than the concentration mentioned in the modified Zarrouk medium resulted in a reduction of biomass, lipid, protein, carotenoids and phycocyanin productivities by 20, 12, 20, 2 and 32 %, respectively. While 100 % phosphorus deficiency enhanced lipids and carotenoids productivities by 128 % and 64 %, respectively, with 25 % reduction in biomass. In addition, sulfur limitation led to 280 % increase in carbohydrate productivity with insignificant changes in biomass productivity. Finally, increasing salinity caused significant increase of lipid, carbohydrate and carotenoids productivities up to 93, 84 and 64 %, respectively. Whereas, increasing salt concentration, increased lipid and carotenoid productivities. The present study showed that phosphorus and sulfur deficiencies and high salinity increased the productivity of some valuable products of Arthrospira platensis. Therefore alteration of growth conditions changes its nutritional compounds. This means that we could obtain Arthrospira with different nutritional composition by altering the composition of cultivation medium

Author Name: Wagih El-Shouny , Mona Sharaf , Abd El-Fatah Abomohra , Mai Abo-Eleneen

URL: View PDF

Keywords: Arthrospira, Nutrition ,Valuable compounds, Productivity

ISSN: ISSN 2356-6388

EISSN:

EOI/DOI:

Add Citation Views: 1

---