| 低分子量南瓜多糖LWPP-Ia的结构研究 |
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| 引用本文： | 张凡华,严浪,张树明,石宝霞,李淑燕,李全宏.低分子量南瓜多糖LWPP-Ia的结构研究[J].食品科学,2009,30(1):25-27. |
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| 作者姓名： | 张凡华 严浪 张树明 石宝霞 李淑燕 李全宏 |
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| 作者单位： | 中国农业大学食品科学与营养工程学院 |
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| 摘 要： | 对从南瓜中提取出来的低分子量纯多糖LWPP-Ia，根据高碘酸氧化、Smith 降解、甲基化反应及GC、GC-MS 等方法，确证了其结构特征：由葡萄糖、果糖、半乳糖组成，摩尔比为3.6:1:1.2，为少分支结构，1，4- 键型为主要键型, 主链上的分支点为-1Glu2-，侧链末端主要由1 位连接Glu 和2 位连接Fru,-1Glu2- 构成侧链。
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| 关 键 词： | 南瓜 多糖 结构 |
| 收稿时间： | 2008-01-03 |
Structure Elucidation of Low Molecular Weight Pumpkin Polysaccharide LWPP-Ia |
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| ZHANG Fan-hua,YAN Lang,ZHANG Shu-ming,SHI Bao-xia,LI Shu-yan,LI Quan-hong.Structure Elucidation of Low Molecular Weight Pumpkin Polysaccharide LWPP-Ia[J].Food Science,2009,30(1):25-27. |
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| Authors: | ZHANG Fan-hua YAN Lang ZHANG Shu-ming SHI Bao-xia LI Shu-yan LI Quan-hong |
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| Affiliation: | (College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China ) |
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| Abstract: | By means of periodate oxidation , Smith degradation , methylation, GC, GC-MS, the structure of low molecular weight polysaccharide, LWPP-Ia isolated from pumpkin was analyzed. Monosaccharide composition analysis of LWPP-Ia indicated hat it is a low branched molecule composed of glucose, fructose and galactose in the molar ratio of 3.6:1:1.2. The main chain is made up of (1 → 4)-linked-Glu and (1 → 4)-linked-Gal1 Some of (1 → 4)-linked-Glus were substituted at 2-O. The (1 → 2)- linked Glu is on the position 1 of side chain and the branch end is (1→)-Glu and (2→)- Fru. |
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| Keywords: | pumpkin polysaeeharide structure |
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