Algae drying techniques depend on the type of end product to be obtained from algae. Commonly used algae drying techniques include – spray drying, drum drying, freeze drying, vacuum drying, sun drying and more.

Dunaliella salina wet algae biomass obtained from the centrifugation step is subjected to spray drying or sun drying under optimum temperature conditions to form dry algae biomass powder. The key factor to note here is that an understanding of the optimal temperature conditions of algae should be done before drying of algae to avoid loss of pigments.