FIGURE 1.

Schematic representation of the lipid extraction methodologies used. (A) Chloroform extraction. Alga grown on a nitrocellulose membrane was transferred to a glass Petri dish containing 5 ml chloroform. After a predefined time, the chloroform was recovered and the algal cells were harvested to determine their dry weight. (B) Silica gel plate extraction. A nitrocellulose membrane covered with algal cells was placed on a silica gel plate culture facing down without any force for a predetermined period.