Immunologically active polysaccharides of eupatorium cannabinum and eupatorium perfoliatum
1986; Elsevier BV; Volume: 25; Issue: 2 Linguagem: Inglês
10.1016/s0031-9422(00)85484-9
ISSN1873-3700
AutoresAngelika M. Vollmar, Wolfram Schäfer, Hildebert Wagner,
Tópico(s)Sesquiterpenes and Asteraceae Studies
ResumoEupatorium cannabinum; Eupatorium perfoliatum, Asteraceae; O-methylglucuronoxylans; plant polysaccharide; structure analysis; immunological activity. From the alkaline aqueous extract of the herbal part of Eupatorium cannabinum and Eupatorium perfoliatum two homogeneous polysaccharides (PI and PII) have been isolated by ethanol precipitation and fractionation on DEAE Sepharose CL-6B and Sephacryl S-400 columns. The structural elucidation was achieved mainly by permethylation, periodate oxidation, basic degradation, methanolysis and reduction experiments, and 13C NMR spectrometry. Both polysaocharides, identified as 4-O-methylglucuronoxylans, differ in their M,s (> 500 000 and 40 000) only. The polysaccharides show a phagocytosis enhancing effect as determined in three immunological test systems (carbon clearance, granulocyte- and chemiluminescence test).
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