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The methanol–chloroform extract of the marine red alga, Rhodomela confervoides, was measured for antioxidant activity, using the α,α-diphenyl-β-picrylhydrazyl radical-scavenging assay and the β-carotene-linoleate bleaching assay systems, and compared with those of the positive controls of butylated hydroxytoluene, gallic acid and ascorbic acid. The active extract was further purified by liquid–liquid...
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