| 半胱氨酸对抗坏血酸稳定性影响的研究 |
| |
| 引用本文： | 邵伟,米广太.半胱氨酸对抗坏血酸稳定性影响的研究[J].中国生化药物杂志,1995,16(5):219-221. |
| |
| 作者姓名： | 邵伟 米广太 |
| |
| 作者单位： | 山东医科大学药学系!济南250012 |
| |
| 摘 要： | 用线性升温法研究半院氨酸对抗坏血酸稳定性的影响,紫外检测波长为243.5 nm。实验结果表明,半胱氨酸能增加抗坏血酸的稳定性。在 20℃,PH 2.0的条件下,含有 2％和 3％的半胱氨酸的抗坏血酸溶液降解反应的活化能分别为 84.814 kJ/mol和 102.834 kj/mol,有效期分别为1. 015 a和 3.154 a。
|
| 关 键 词： | 线性升温法 稳定性 抗坏血酸 半胱氨酸 |
Studies on Effect of Cysteine on Stability of Ascorbic Acid |
| |
| Shao Wei,Mi Guangtai,Wang Chunxiang,Yao Meicun Dept. of Pharmacy,Shandong Medical University.Studies on Effect of Cysteine on Stability of Ascorbic Acid[J].Chinese Journal of Biochemical Pharmaceutics,1995,16(5):219-221. |
| |
| Authors: | Shao Wei Mi Guangtai Wang Chunxiang Yao Meicun Dept of Pharmacy Shandong Medical University |
| |
| Affiliation: | Jinan 250012 |
| |
| Abstract: | The linear nonisothermal method was applied to study the effect of cysteine on the stability of ascorbic acid in water (pH2. 0), UV detection at 243. 5 nm. The results showed that the stability of ascorbic acid was increased by cysteine. In the presence of cysteine, the activation energy was 84. 814 kJ/mol (2%Cys)and 102. 834 kJ/mol(3%Cys), the term of validity was 1. 015a and 3. 154a at 20 C. |
| |
| Keywords: | Linear nonisothermal method Stability Ascorbic acid Cysteine |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
