| 重金属离子对双氧水氧化淀粉的催化作用及其特性的影响 |
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| 引用本文： | 林宝凤,封欣,郑安雄.重金属离子对双氧水氧化淀粉的催化作用及其特性的影响[J].广西科学,2006,13(4):293-296. |
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| 作者姓名： | 林宝凤 封欣 郑安雄 |
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| 作者单位： | 广西大学化学化工学院,广西南宁,530004;广西大学化学化工学院,广西南宁,530004;广西大学化学化工学院,广西南宁,530004 |
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| 基金项目： | 国家自然科学基金项目(No.50263001)，广西科技厅攻关项目(桂科攻0330002-1)联合资助 |
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| 摘 要： | 以双氧水为氧化剂制备氧化淀粉,研究F eSO4、CuSO4和N iC l2的催化作用,分析比较重金属离子催化作用下所制备的氧化淀粉的特性,探讨残留的重金属离子对氧化淀粉凝沉性的影响。结果表明,在所研究的范围中,F eSO4的催化作用最强,其催化制得的氧化淀粉羧基含量最大,CuSO4催化作用次之,N iC l2不起催化作用。铁、铜离子一方面通过催化作用提高了氧化淀粉的透明度降低了粘度;另一方面残留的铁、铜离子对氧化淀粉的凝沉性有较大的影响。
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| 关 键 词： | 淀粉 双氧水 催化 重金属离子 |
| 文章编号： | 1005-9164（2006）04-0293-04 |
| 收稿时间： | 2006-07-11 |
| 修稿时间： | 2006-08-25 |
A Study of Catalytic Effect of Heavy Metal Ions on H2O2 and the Characters of Oxidized Starches |
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| LIN Bao-feng,FENG Xin and ZHENG An-xiong.A Study of Catalytic Effect of Heavy Metal Ions on H2O2 and the Characters of Oxidized Starches[J].Guangxi Sciences,2006,13(4):293-296. |
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| Authors: | LIN Bao-feng FENG Xin and ZHENG An-xiong |
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| Institution: | College of Chemistry and Chemical Engineering ,Guangxi University ,Nanning ,Guangxi, 530004, China |
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| Abstract: | In this paper,the catalytic effects of FeSO_4,CuSO_4 and NiCl_2 on H_2O_2 for oxidizing starch were studied,the characters of these oxidized starches were compared,and the effect of heavy metal ions on the retrogradation of oxidized starch was discussed.The results showed that the catalytic effect of FeSO_4 on H_2O_2 was higher than CuSO_4,because the carboxyl of oxidized starch under the catalysis of FeSO_4 was higher.There was almost no catalytic effect of NiCl_2 on H_2O_2.On one hand iron ions and copper ions made the oxidized starches exhibit high clarity and low viscosity due to the catalysis effect.On the other hand the residual iron ions and copper ions had great effect on the retrogradation of oxidized starches. |
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| Keywords: | starch hydrogen peroxide catalyze heavy metal ion |
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