| 光谱学与光谱分析 |
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| Study on the Mustard of Polysaccharides |
| HE Feng-ga,Hasenqimeng |
| College of Chemistry University of Inner Mongolia Nationalities, Tongliao 028000, China |
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Abstract The objective of this study is to isolate and purify the polysaccharides fractions from mustard and to determine the constituent characters. Hot water extracting and ethanol precipitating method were employed to isolate polysaccharides. After the removal of protein by Sevag method, the purified mustard polysaccharides were dried by frozen drier. The amount of total carbohydrates of mustard polysaccharides was measured with phenol-sulfuric acid method. IR spectrometry，UV-spectrophotometer, and automatic spectropolarimeter were used to determine the characteristic absorption and optical rotation of the polysaccharides，respectively. Size exclusion chromatography with laser light scattering technology was employed to measure the molecular masses. The monosaccharides contained in the mustard polysaccharides were analysed by HPLC. The amount of total carbohydrates in mustard polysaccharides is 98.96％. The molecular weight distribution was 1.42×104-2.55×106, and eighty percent was distributed in 2.1×105. The monosaccharide constituent of mustard polysaccharides were glucose，fructose，arabinose，galactose and xylose，and their molar proportions are 21.4∶12.89∶5.6∶4.1∶2.5, respectively.
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Received: 2005-07-06
Accepted: 2005-10-26
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Corresponding Authors:
HE Feng-ga
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[1] Hasenqimeng, HE Feng-ga, ZHOU Xiao-Jun(哈森其木格，贺锋嘎，周晓军). Journal of Inner Mongolia Teachers College for Nationalities(内蒙古民族师范学院学报)，1994，9(2)：45.
[2] Hasenqimeng, HE Feng-ga(哈森其木格，贺锋嘎). Chemical World(化学世界)，1994，35(8): 438.
[3] Hasenqimeng, HE Feng-ga(哈森其木格，贺锋嘎). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2002，22(3)：446.
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