CHAPTER II
MATERIALS AND METHODS
43
Figure 48: the tubes after centrifugation
After centrifugation, the Spirulina biomass formed a pellet at the bottom of the tubes. The
supernatant (the liquid above the pellet) was carefully decanted without disturbing the pellet.
Any remaining supernatant was removed using a pipette.
When needed, the pellet was washed with a small amount of clean water or buffer to remove
any remaining medium, and then centrifuged again to form a new pellet of biomass. The
harvested Spirulina pellet was transferred to a crystallizer. The biomass was spread evenly to
form a thin layer for uniform drying.
Figure 47: the microcentrifuge