| 溶液的酸碱性对番茄红素荧光光谱的影响 |
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| 引用本文： | 李振声,邓玲,杨晓占.溶液的酸碱性对番茄红素荧光光谱的影响[J].光散射学报,2010,22(1):77-80. |
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| 作者姓名： | 李振声 邓玲 杨晓占 |
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| 作者单位： | 1. 第三军医大学生物医学工程与医学影像学院,重庆,400038
2. 重庆理工大学数理学院,重庆,400054 |
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| 摘 要： | 用970CRT荧光分光光度计分别采集了不同pH值下番茄红素-丙酮溶液的荧光光谱,并测量了这些溶液的荧光强度随时间的变化情况。通过对数据的分析得出:与没有经过酸碱滴定的番茄红素-丙酮溶液相比,酸性条件下,荧光强度相对较小,而在碱性条件下,其荧光强度相对较大;pH=1时,番茄红素-丙酮溶液的荧光峰位发生了红移,而pH=11和pH=13时,其荧光峰位又有不同程度的蓝移;在强酸和强碱环境中番茄红素不稳定,其荧光峰强度下降较快,这是因为在强酸环境下重原子效应的影响,和强碱环境下番茄红素参加了阴离子聚合反应;番茄红素在有机溶剂和弱碱环境下比较稳定,其荧光强度下降较慢。
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| 关 键 词： | 荧光光谱 番茄红素 酸性影响 碱性影响 |
| 收稿时间： | 2009/10/19 |
The Influence of Acid and Alkali on the Fluorescence Spectrum of Lycopene |
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| LI Zhen-sheng,DENG ling,YANG Xiao-zhan.The Influence of Acid and Alkali on the Fluorescence Spectrum of Lycopene[J].Chinese Journal of Light Scattering,2010,22(1):77-80. |
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| Authors: | LI Zhen-sheng DENG ling YANG Xiao-zhan |
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| Institution: | 1.Collage of Biomedical Engineering and Medical Image;Third Military Medical University;Chongqing 400038;China;2.School of Mathematics and Physics;Chongqing University of Technology;Chongqing 400054;China |
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| Abstract: | By using 970CRT fluorescence spectrophotometer,the fluorescence spectra of lycopene-acetone solution with different pH have been collected,and these fluorescence intensities versus time have been measured.After analysis these data,the conclusion was obtained: the fluorescence intensities of the lycopence were relatively stronger under alkali circumstance than under acid circumstance.Red shift occurred when pH=1,and different blue shifts occurred when pH=11 and pH=13.Under strong acid and alkali circumstance... |
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| Keywords: | fluorescence spetrum lycopene the influence of acid the influence of alkali |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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