摘要：Eucheuma cotonii and E. spinosum cultivated in Arakan waters, North Sulawesi, Indonesia, were tested the antioxidant activity of fresh and dry samples through maceration in 60%, 70%, and 80% methanol solvent. The tested antioxidants were total phenol, DPPH, FRAP, and total carotene, respectively. Fresh E . spinosum dissolved in 60% methanol had the highest total phenol, 5.87±0.15 mg GAE/g, the highest DPPH, 75.27 ± 0.29 %, the highest FRAP, 44.52 ± 1.27 mg/l, respectively. The highest total carotene, 9.40±0.35 µg/g, was recorded in fresh E. cotonii, followed by fresh E. spinosum, 8.73±0.23 µg/g, which were also dissolved in 60% methanol. Therefore, the best antioxidant activity was found in fresh E . spinosum macerated in 60% methanol.
