| Literature DB >> 29934174 |
Solomon Rajesh Thambiraj1, Michael Phillips1, Sundar Rao Koyyalamudi2, Narsimha Reddy3.
Abstract
Yellow lupin polysaccharides (YLP-1, YLP-2 and YLP-3) were isolated from the whole seeds of Lupinus luteus L. Their antioxidant activities were evaluated by ABTS+ and hydroxyl radical scavenging, and Fe2+ chelating assays. Immunostimulatory activities were measured by their ability to activate macrophages to produce TNF-α and NO. Four strains of probiotic bacteria were used to measure their prebiotic activities. YLP-2 with largest galactose content displayed the best activity amongst the three isolated polysaccharides. NMR and FT-IR spectroscopic methods have revealed that YLPs contain galactans and galactomannans which are linked with β-(1,4) glycosidic bond in the main chain. The side chain Galp unit of galactomannan is connected to the main chain Manp by α-(1,6) linkage. The results presented in this paper strongly suggest that YLPs display significant antioxidant, immunostimulatory and prebiotic activities and hence hold great potential as nutraceutical and functional agents.Entities:
Keywords: Antioxidant activity; Immunomodulatory activity; Polysaccharides; Prebiotic activity; Structural characterization; Yellow lupin seeds
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Year: 2018 PMID： 29934174 DOI： 10.1016/j.foodchem.2018.02.111
Source DB: PubMed Journal: Food Chem ISSN： 0308-8146 Impact factor: 7.514