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三种芦丁脂肪酸酯在空气/水界面的成膜性质
Monolayers of Three Amphiphilic Esters of Rutin at the Air-Water Interface
- 工程科学与技术 2011年43卷第1期 页码：185-189
- 作者机构：
1. 四川大学轻纺与食品学院纺织研究所
2. 潍坊医学院
3. 四川大学纺织研究所
- 作者简介：
- 基金信息：国家自然科学基金
DOI：
中图分类号：纸质出版日期：2011，
网络出版日期：2010-3-26，
扫 描 看 全 文
杜宗良,段煜,李瑞霞,吴大诚.三种芦丁脂肪酸酯在空气/水界面的成膜性质[J].工程科学与技术,2011,43(1):185-189.
Du Zong-Liang. Monolayers of Three Amphiphilic Esters of Rutin at the Air-Water Interface[J]. Advanced Engineering Sciences, 2011,43(1):185-189.
摘要
中文摘要: 采用LB膜分析仪分别研究了芦丁硬脂酸酯(RS)、芦丁月桂酸酯(RL)和芦丁正己酸酯(RC)在空气/水界面的成膜性质，及亚相中的Al3+对三种芦丁脂肪酸酯成膜性质的影响。结果显示，三种芦丁脂肪酸酯的成膜性质与其疏水基的碳链长度、压膜速度和亚相性质有关。RS和RL能在水面铺展为液态扩张膜，RC则不能成膜。慢速压膜利于膜稳定性，膜的崩溃压大，较快速压膜能使更多膜分子保留在水表面，膜的平均分子面积大。选择适宜的压膜速度对得到比较稳定的芦丁脂肪酸酯膜很关键。当亚相中含Al3+时，RS、RL和RC均铺展成液态扩张膜，且RS和RL 膜崩溃时的分子面积 (acoll) 大于它们在水表面铺展成膜的acoll。研究结果对从分子水平研究芦丁脂肪酸酯抗氧化活性的作用机制具有重要的参考价值。
Abstract
Abstract:The π-A isotherms for monolayers of three amphiphilic rutin esters
rutin-4”’-O-stearate (RS)
rutin-4”’-O-laurate (RL) and rutin-4”’-O-caproate (RC)
were measured at the air-water interface and an air-aqueous aluminum sulfate solution interface. The properties of the monolayers of three rutin esters were related to the carbon number of alkyl
the compression rate and the property of substrate. Although RS and RL showed scant water solubility
they formed monolayers with the liquid-expanded phase when spread on water. While RC could not form insoluble monolayer at the air-water interface
which may be due to the larger water solubility of RC. Appropriately low compression rate was critical to form relatively stable monolayers. When spread on an aqueous aluminum sulfate solution
the formation of a complex between the aluminum ions and the rutin ester resulted in higher values of acoll for RS and RL monolayers compared with their values on water
and RC could spread as liquid-expanded phase monolayer. The results described in this paper provide valuable information for investigating the interaction of flavonoids and biomembranes and the anti-oxidant mechanism of flavonoids.
关键词
芦丁脂肪酸酯单分子膜空气/水界面空气/硫酸铝水溶液界面
Keywords
Rutin esterMonolayerAir-water interfaceAir-Aqueous aluminum sulfate solution interface
references
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