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Phytochemical profiles and antioxidant potential of four Arctic vascular plants from Svalbard

DRS at CSIR-National Institute of Oceanography

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Title Phytochemical profiles and antioxidant potential of four Arctic vascular plants from Svalbard
 
Creator Singh, P.
Singh, S.M.
DeSouza, L.
Wahidullah, S.
 
Subject antioxidants
chemical pollution
Environmental stress
Arctic vascular plants
 
Description Environmental stress in the Arctic region leads to damage in plant membranes as a result of oxidation processes. To withstand these stress conditions, plants are expected to produce antioxidants that differ from phenolics. Here, we investigated the chemical composition and antioxidative activities of four Arctic flowering plant species (Dryas octopetala, Carex rupestris, Silene uralensis and Deschampsia alpina.) through in vitro measurements of the free radical scavenging activities (FRS), inhibition of lipid peroxidation (ILP) and trolox equivalent antioxidant capacities (TEAC). D. octopetala exhibited the highest ILP (76.45 percent) and FRS (86.58 percent) activities. The TEAC values were higher than those of the Trolox vitamin E standard in all four species. Overall, the antioxidative activity was highest in D. octopetala, followed by C. rupestris, S. uralensis and D. alpina. Electrospray ionization tandem mass spectrometric (ESI?MS/MS) analysis of methanolic extracts of these plants revealed the presence of organoselenides, linear alkylbenzenesulfonates (LAS) and oligosaccharides, some of which are reported as antioxidants in the literature. Hence, it is likely that the antioxidant activities exhibited by these plants are not only related to the production of phenolics. This is the first report of the antioxidant potential of four Arctic flowering plants and the presence of selenides in D. octopetala and S. uralensis, and the production of LAS in C. rupestris. Our findings suggest that these plants can be used as nutraceutical sources of selenium and as biomarkers for environmental pollution.
 
Date 2013-01-08T04:51:52Z
2013-01-08T04:51:52Z
2012
 
Type Journal Article
 
Identifier Polar Biology, vol.35; 2012; 1825-1836
http://drs.nio.org/drs/handle/2264/4213
 
Language en
 
Rights An edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2012] Springer.
 
Publisher Springer-Verlag