温度和柠檬酸钠对卵磷脂-水有序体系中草酸钙晶体生长的影响  

Effect of temperature and sodium citrate on the crystallization of calcium oxalate in ordered lecithin-water system

作　　者：何建华[1] 欧阳健明[1] 段荔 

机构地区：[1]暨南大学化学系,广东广州510632

出　　处：《暨南大学学报（自然科学与医学版）》2003年第1期36-41,共6页Journal of Jinan University(Natural Science & Medicine Edition)

基　　金：广东省重点攻关项目(C31401);广东省自然科学基金重点项目(980898;013202);国家自然科学基金重点项目(20031010);教育部重点科学技术项目(1998-121);广州市重点科技项目(SZ-613)

摘　　要：　在卵磷脂-水体系中研究了温度和柠檬酸钠(Na3cit)对卵磷脂(PC)-水有序体系中草酸钙(CaOx)晶体物相和晶面的影响,采用X-射线衍射仪对产物进行表征.结果发现:①随着温度从0℃升高70℃,产物中一水草酸钙(COM)含量逐渐增加;②相同温度下,加入Na3cit后二水草酸钙(COD)的含量大大高于没有Na3cit的体系;③Na3cit对COD的诱导影响比温度的影响要大得多;④在有序体系中,COD的(411)晶面和COM的(020)晶面优先生长.Effect of temperature and sodium citrate (Na3cit) on the crystal morphology and crystal faces of calcium oxalate(CaOx)in lecithin-water ordered system was studied, and X-ray powder diffraction was used to characterize the products. The results indicate that the amount of calcium oxalate monohydrate (COM) was increasing as the temperature rising from 0 ℃ to 70 ℃, the amount of calcium oxalate dihydrate (COD) obtained in the system with Na3cit is much more than that without Na3cit at same temperature, Na3cit have greater effect on inducing COD than temperature and (411) face of COD and (020) face of COM grow preferentially in the ordered system. 

关 键 词：卵磷脂-水有序体系 晶体生长 草酸钙 柠檬酸钠 温度 晶体结构 物相 晶面 

分 类 号：Q781[生物学—分子生物学]