蛋黄卵磷脂的液晶态—晶态结构的小角X射线衍射研究

蛋黄卵磷脂的液晶态—晶态结构的小角X射线衍射研究 SMALL ANGLE X-RAY DIFFRACTION STUDY OF THE STRUCTURE OF LIQUID CRYSTALLINE-CRYSTALLINE PHASES OF EGG YOLK LECITHIN 李美亚 Li Meiya Cao Lianxin 1 2 first-author 曹连欣 1 2 Center of Analysis and Meassurement Wuhan University Center of Analysis and Meassurement Wuhan University Center of Analysis and Meassurement, Wuhan University Center of Analysis and Meassurement, Wuhan University Center of Analysis and Meassurement Wuhan University Center of Analysis and Meassurement Wuhan University 本文主要应用小角X射线衍射法,在不同的温度下对蛋黄卵磷脂（EYL）"无水"样品的结构做了测定,得到了层状液晶相L α 、层状结晶相L β 及中间相L α β,并且结合广角处烃链构象峰的变化,考察了这些相之间的转变;同时在室温下,对不同含水量的EYL的结构也作了测定。文中最后对上述结果和可能的生物意义作了一些初步讨论。 The structure of several phases of "dry" Egg Yolk Lecithin has been determined by small angle x-ray diffraction within a large range of temperature. These phases are lamellar liquid-crystalline phase L α , lamellar crystalline phase L β and intermediate L α β. Combining with information of hydrocarbon chain conformation at 0.425nm, the transition among these phases has been investigated. Simultaneously, the structure of the phase of the Egg Yolk Lecithin containing different amount of water is also investigated at room temperature. Finally, the results mentioned above are discussed, and some possible biological significance are preliminarily suggested. 液晶 蛋黄卵磷脂 小角X射线衍射 结构 相变 liquid crystal egg yolk lecithin structure phase transformation small-angle x-ray diffraction. 1988-02-01 2021-04-01 2