| 碱醇处理的木薯淀粉结晶结构的变化 |
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| 引用本文： | 徐立宏,张本山,杨连生. 碱醇处理的木薯淀粉结晶结构的变化[J]. 天然产物研究与开发, 2007, 19(1): 25-28 |
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| 作者姓名： | 徐立宏 张本山 杨连生 |
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| 作者单位： | 1. 华南理工大学化学科学学院
2. 华南理工大学轻工与食品学院,广州,510640 |
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| 摘 要： | 木薯淀粉在一定温度下用乙醇和碱的混合液处理,用HCl中和,醇洗,最后在50℃左右的烘箱中干燥6h,X射线衍射结果表明经碱醇处理的木薯淀粉其微晶、亚微晶、非晶的组成发生了变化。不同的处理条件,结晶组成的变化不同。较低浓度的醇,较高浓度的碱或较高反应温度得到非晶化程度高一些的淀粉。在偏光显微镜下观察到较少的偏光十字,表明淀粉的结晶结构发生了变化。
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| 关 键 词： | 微晶 亚微晶 非晶 |
| 文章编号： | 1001-6880（2007）01-0025-04 |
| 收稿时间： | 2006-06-05 |
| 修稿时间： | 2006-11-06 |
Crystalline Structure Changes of Tapioca Starch Granule by Alcoholic-Alkaline Treatment |
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| XU Li-hong,ZHANG Ben-shan,YANG Lian-sheng. Crystalline Structure Changes of Tapioca Starch Granule by Alcoholic-Alkaline Treatment[J]. Natural Product Research and Development, 2007, 19(1): 25-28 |
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| Authors: | XU Li-hong ZHANG Ben-shan YANG Lian-sheng |
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| Affiliation: | 1. College of Chemistry Science; 2. College of Light Industry and Food Science South China University of Technology, Guangzhou 510640, China |
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| Abstract: | Tapioca starch was treated with a mixture of ethanol and NaOH solutions at a controlled temperature. The treated starch was then neutralized with HCl,washed with ethanol,and dried at 50 ℃ for 6 h. X-ray diffraction experiment showed that the proportion on mierocrystal, submierocrystal and non-crystal of the tapioca starch treated by alcoholicalkaline was changed. Lower concentration of ethanol,higher concentration of NaOH, or higher temperature gave the resuiting starches higher non-crystallinity. Less Maltese crosses were observed under polarized-light microscopy,indicating the changes of crystalline structure. |
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| Keywords: | microcrystal submicrocrystal non-crystal |
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