| 裂褶多糖的羧甲基化 |
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| 引用本文： | 周林,郑必胜,郭祀远,李琳.裂褶多糖的羧甲基化[J].天然产物研究与开发,2006,18(4):555-557. |
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| 作者姓名： | 周林 郑必胜 郭祀远 李琳 |
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| 作者单位： | 华南理工大学轻工与食品学院,广州,510640 |
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| 基金项目： | GuangdongProvinceScientificandTechnologicalPlanningProject(2003B31701) |
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| 摘 要： | 采用氢氧化钠-氯乙酸反应体系,以异丙醇为溶剂,利用L9(34)正交试验合成mg级的不同取代度(DS)的羧甲基化裂褶多糖。研究表明试验条件下各因素对DS值影响由大到小的顺序为:氯乙酸/裂褶多糖(g/g)>氢氧化钠/裂褶多糖(g/g)>反应时间>反应温度。其红外光谱在1600 cm-1出现-COO-特征吸收;其紫外光谱在200~300 nm没有明显的吸收峰。对其13C NMR化学位移进行了归属。
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| 关 键 词： | 羧甲基化裂褶多糖 光谱分析 取代度 |
| 文章编号： | 1001-6880（2006）04-0555-03 |
| 收稿时间： | 2006-01-23 |
| 修稿时间： | 2006-03-02 |
Carboxymethylation of Schizophyllan |
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| ZHOU Lin,ZHENG Bi-sheng,GUO Si-yuan,LI Lin.Carboxymethylation of Schizophyllan[J].Natural Product Research and Development,2006,18(4):555-557. |
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| Authors: | ZHOU Lin ZHENG Bi-sheng GUO Si-yuan LI Lin |
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| Institution: | College of Light Industry and Food Science, South China University of Technology, Guangzhou 510640, China |
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| Abstract: | Carboxymethyl schizophyllan (CM-SPG) with various degrees of substitution (DS) were prepared at mg-level in NaOH-monochloroacetic acid with isopropanol as solvent using orthogonal design L9 (34). It was found that the four factors on DS can be ranked as:CAA/SPG(g/g) ＞ NaOH/SPG(g/g) ＞ Time ＞ Temp. In the infrared spectra of CM-SPG, a typical absorption of-COO at 1600 cm-1 was observed and there was no absorption peak at 200～ 300 nm in the UV spectra. The main 13C NMR data of CM-SPG were assigned. |
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| Keywords: | carboxymethyl schizophyllan spectra analysis degrees of substitution |
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