Affiliation:
1. Universiti Teknologi PETRONAS
2. Cairo University
3. National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority
Abstract
Spirulina platenisiswas screened for antioxidant activity, water soluble pigments (phycobiliproteins) and secondary metabolites. Successive extraction by hexane, chloroform, ethyl acetate, ethanol (70%) and water was carried out. Ethyl acetate extract demostrated high antioxidant activity with both 2,2 ́-diphenyl-1-picrylhydrazyl (DPPH) scavenging (47±0.32 %) and β-Carotene-linoleic acid bleaching assays (93.64±0.25%),while, it showed very low antioxidant activity with 2, 2 ́-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) radical scavenging method. Relatively high phycobiliproteins (0.16±0.01 mg ml-1), total phenolic content (21.88±1.67 mg GAE g-1dry wt.), total alkaloids (3.02±0.06 %) and total terpenoids (0.14±0.00%) were determined.
Publisher
Trans Tech Publications, Ltd.
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