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《Natural Product Research and Development》 1992-03
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STUDY ON MESONA CHINENSIS BENTH POLYSACCHARIDE Ⅰ. ISOLATION, PURIFICATION AND IDENTIFICATION

Lin Shaoqin, Zhu Sumin (Institute of Polymer Science, Fujian Normal University Fu Zhou 350007)  
Mesona Chinensis Benth is traditional chinese herbal medicine. The crude polysaccharide can be obtained from Mesona Chinensis Benth by extraction with 0.5% NaHCO_3 and by fraction precipitation with alcohol. It was deeoloured with H_2O_2 and further purification by chromatography on a Sephadex G-75 column. The pure polysaecharide is given the name of Me sona Chinensis Benth polysaccharide (MCPS) which is homogeneous by the analysises of thin-layer chormatogrpahy, agarose gel electrophoresis and cellulose acetate film electrophoresis The analysis of MCPS by IR spectrum scanning gave a special absorption band of polysaccharide. Its molecular weight was estimated to be 43,000 by HPLC and its monosaceharide composition was identified by thin-layer chromatography. The results indecated that MCPS consists of D-glucose, D-galaetose, L-arabinose, xylose, rhamnose galaeturonie acid and an unknown sugar. Preliminary results of pharmacology experiment showed that MCPS have function of increasing immunity and antieaneer effect.
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