Fig. 4. Absorption spectra of Chlorophyta were extracted with 90 % acetone
Pigment from Rhodophyta were also extracted using acetone. Pigment extracted from Laurencia cartilaginea
shows absorption peak at around 400 nm, 430 nm, and 660 nm, Gracilaria verrucosa was undetected, while
Acanthophora spicifera absorption peak were at between 410 nm to 450 nm and 660 nm (Fig. 5). Fig. 3 and Fig. 4
depict two absorption peaks in the range of 400 to 475 nm and about 660 nm. Laurencia cartilaginea (Rhodophyta)
were extracted using distilled water resulting absorption peaks at 490 nm and 540 nm; Gracilaria verrucosa at 490
nm, 560 nm, and 690 nm; Acanthophora spicifera at 490 nm, 540 nm, and 680 nm.