Journal
EUROPEAN FOOD RESEARCH AND TECHNOLOGY
Volume 237, Issue 5, Pages 691-701Publisher
SPRINGER
DOI: 10.1007/s00217-013-2044-4
Keywords
Schisandra sphenanthera; Schisandra chinensis; Polysaccharides; Structure characteristic; Antioxidant properties
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Funding
- National High Technology Research and Development Program (863 Program) of China [SS2013AA100207]
- Project of National Key Technology Research and Development Program [2012BAD33B08]
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Different polysaccharides (NPS1-1 and BPS1-1) were obtained from Schisandra sphenanthera and Schisandra chinensis fruits by hot-water extraction, DEAE-52 ion-exchange column chromatography and Sephadex G-150 gel filtration chromatography. Structure characteristic and antioxidant properties of NPS1-1 and BPS1-1 were comparatively investigated by gas chromatography, Fourier transform infrared spectroscopy, scanning electron microscopy, multi-angle laser light scattering analysis, atomic force microscope, circular dichroism spectroscopy, scavenging DPPH free radicals assay, ferric-reducing power assay and lipid peroxidation inhibition assay, respectively. Results showed that physicochemical and antioxidant properties of NPS1-1 and BPS1-1 were different from each other. Molecular weights of NPS1-1 and BPS1-1 were 2.22 x 10(6) and 2.66 x 10(6), respectively. NPS1-1 and BPS1-1 could be a kind of rhamnogalacturonan, and the sugar chain contained pyran configurations and beta-glycosidic linkages. Significant differences in the surface features and particle distribution of NPS1-1 and BPS1-1 were detected. NPS1-1 showed higher antioxidant abilities on ferric-reducing power and lipid peroxidation inhibition activity. The results would be helpful for the further use of the two fruits.
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