Journal
CARBOHYDRATE POLYMERS
Volume 135, Issue -, Pages 128-137Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2015.08.056
Keywords
Sambucus nigra; Elderflower; Immunological activity; Pectic polysaccharides; Complement system; Lipopolysaccharide
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Elderflowers have traditionally been used and are still used for its anti-inflammatory property. Traditionally elderflowers were used as remedies against cold, flu and diuretic. The aim of this study was to relate the structure of pectic-polysaccharides from elderflowers to immunomodulating properties. Purified fractions obtained by gelfiltration and ion exchange chromatography of 50% ethanol, 50 degrees C water and 100 degrees C water extracts exhibited strong complement fixating activity and macrophage stimulating activity. Reduced bioactivity was observed after removal of arabinose and 1,3,6-Gal linkages by weak acid hydrolysis. Enhanced bioactivity was observed after removal of estergroups by NaOH. Relating linkage analysis to the results of the bioactivity tests, led to the assumption that the branched moieties of the arabinogalactans linked to rhamnogalacturonan region, is important for the immunomodulating activity seen in elderflowers. No cytotoxity was observed. (C) 2015 Elsevier Ltd. All rights reserved.
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