Bioactive potential and composition analysis of sulfated polysaccharide from Acanthophora spicifera (Vahl) Borgeson.

Marine seaweeds contain a valuable source of functional bioactive polysaccharide and it plays main role for effective anticancer activity. The structural feature of SPs was studied through FT-IR and H-1 NMR spectra analysis. The isolated SPs from A. spicifera contain 63.3% of total sugar, 21.9% of total sulfate and 12.6% of total uranic acid was found. The active F2 fraction molecular weight of SP was found to be 420 kDa. The sugar was composed of galactose (73.5%), xylose (9.2%), mannose (1.9%) and arabinose (10.9%). Further the SP showed DPPH free radical scavenging activity of 55.55% at 150 mu g/mL and reducing power activity of 913% at 125 mu g/mL. In the present study, the purified sulfated polysaccharide (fraction F2) were extracted, purified and characterized for red seaweed and evaluated for their potential anticancer activity of in A549 cell lines under in vitro condition. These polysaccharide fractions exhibited potential apoptotic effects on A549 cell lines. (C) 2018 Elsevier B.V. All rights reserved.