当归水提液制备方法的研究

目的研究当归水提液的制备方法。方法采用正交设计试验法[1]进行水提工艺的用量(A)、煎煮时间(B)、浓缩比例(C)、乙醇浓度(D)4因素、3水平的实验研究,以其主要成分阿魏酸含量为指标。结果当归水提的最佳工艺条件为:煎煮用量水分别为生药量的6倍、4倍、4倍;煎煮时间分别为90min、60min、30min;提取浓缩液为1∶1;首次醇沉含醇量为60%。结论筛选出了当归的最佳水提取工艺。     

HPLC法测定行气脉动胶囊中乙酰水杨酸的含量

目的 建立HPLC法测定行气脉动胶囊中乙酰水杨酸的含量。方法 采用Kromasil C18(250mm×4．6mm 5μm)柱, 流动相为甲醇-0．1％二乙胺水溶液-冰醋酸(40:60:4),检测波长为280nm。结果 测得线性范围为0．6～1．4mg·ml-1(r =0．9998),平均回收率为99．73％,RSD为1．23％(n=5)。结论 本法简便,准确。     

当归川芎红花不同组合方式对复方方剂中阿魏酸含量的影响

目的测定当归、川芎、红花不同的配伍对复方方剂煎液中阿魏酸含量的影响,从而比较得到最佳工艺。方法用高效液相色谱法(HPLC)测定不同煎液中阿魏酸含量。结果三味合煎液中阿魏酸的含量最大。结论三味合煎是比较理想的煎煮方法,有利于阿魏酸的充分溶出。     

高效液相色谱法测定生化产复康胶囊中的阿魏酸

目的：建立生化产复康胶囊中阿魏酸的含量测定方法。方法：采用高效液相色谱法，以kromasil C18柱为固定相，乙睛-0．085%磷酸溶液（17：83）为流动相，检测波长315nm，流速1．0ml／min，柱温35℃。结果：阿魏酸在0．076～0．228ug（r=0．9999）范围内线性关系良好，平均回收率为100．25％、RSD为1．84％。结论：本方法简便，准确，重现性好，可用于测定生化产复康胶囊中阿魏酸的含量。     

反相高效液相色谱法测定金银花合剂中的绿原酸含量

目的　建立一种用反相高效液相色谱法测定金银花合剂中绿原酸的含量。方法　以shim - packCLC -ODS (2 0 0mm× 4 .6mm ,5um )为色谱柱 ,用甲醇 -水 -冰醋酸 (35∶6 5∶0 .5 )作流动相 ,检测波长为 :32 7nm ,流速 :1 .0mL/min ,柱温 :常温 ,外标法定量。结果　绿原酸在 1 5 μg·mL-1 ～ 1 0 5 μg·mL-1 范围内呈现出良好的线性关系 ,(r =0 .9999) ,方法平均回收率为 :1 0 0 .2 5 %,RSD为 0 .4 8%(n =4 )。结论　该方法简便、快速 ,测定结果准确可靠 ,可用于金银花合剂的质量控制。     

Micelles Based on Polyvinyl Alcohol Substituted with Oleic Acid for Targeting of Lipophilic Drugs

Polymeric micelles based on polyvinyl alcohol substituted with oleic acid were used as vehicles for progesterone and folic acid. The ability of this amphiphilic polymer to entrap lipophilic drugs and to generate stable micelles in aqueous neutral medium makes it a good candidate for drug delivery. The release of the loaded drugs in acidic environments represents another important property of these systems. Size of micelles, their stability, and their drug-loading capacity were evaluated, as well as the in vitro controlled-release profiles at pH 7.4 and 5.5.     

珍珠母、胆酸、栀子苷、黄芩苷对局灶性脑缺血大鼠缺血脑组织单核细胞趋化蛋白的影响

目的观察缺血过程中珍珠母、胆酸、栀子苷、黄芩苷对大鼠脑缺血后缺血脑组织内单核细胞趋化蛋白(MCP-1)含量的影响.方法 110只雄性SD大鼠随机分为正常组,脑缺血12 h模型组,珍珠母、胆酸、栀子苷、黄芩苷治疗脑缺血12 h组,脑缺血24 h模型组,珍珠母、胆酸、栀子苷、黄芩苷治疗脑缺血24 h组.用ELISA法测定脑缺血12 h后和脑缺血24 h后缺血脑组织MCP-1含量的变化.结果大鼠局灶性脑缺血12 h后,缺血脑组织MCP-1含量较正常组明显增高(P＜0.05).珍珠母、栀子苷治疗脑缺血12 h组MCP-1含量较缺血12 h模型组明显降低(P＜0.01).胆酸、黄芩苷治疗脑缺血12 h组MCP-1含量较缺血12 h模型组无显著性差异.大鼠局灶性脑缺血24 h后,缺血脑组织MCP-1含量较正常组明显增高(P＜0.05).珍珠母、胆酸、栀子苷、黄芩苷组治疗脑缺血24 h纽MCP-1含量较缺血24 h模型组明显降低(P＜0.05或P＜0.01).结论降低缺血后脑组织MCP-1的舍量,可能是珍珠母、胆酸、栀子苷、黄芩苷治疗脑缺血的重要机制之一.     

复合氨基酸胶囊中水溶性维生素的含量测定

目的:建立复合氨基酸胶囊中5种水溶性维生素的含量测定方法.方法:采用高效液相色谱法,用乙腈与庚烷磺酸钠-磷酸钠的水溶液(pH=3.0)为流动相,流速1.0ml·min-1,色谱柱为C18(4.6×250mm,5μm),柱温40℃,检测波长为280nm,进样量为20μl.结果:维生素Bl、维生素B2、维生素B6、维生素C和烟酰胺分别在24.7～75.2μg·ml-1、15.0～44.9μg·ml-1、12.2～37.5μg·ml-1、99.2～299.9μg·ml-1和100.3～300.9μg·ml-1范围内呈线性关系,相关系数均为1.000,平均回收率均在100%±2%范围以内.RSD分别为0.19%、0.26%、0.46%、1.17%和0.52%.结论:本方法准确,简便,快捷,可以同时测定复合氨基酸胶囊中维生素B1、维生素B2、维生素B6、维生素C和烟酰胺的含量.     

三氯乙烯诱发SD大鼠产生免疫反应的模型研究

目的研究SD大鼠对三氯乙烯(trichloroethylene,TCE)免疫刺激的反应,拟建立大鼠对TCE免疫反应的模型.方法背部皮内注射体积分数为15%的TCE免疫SD大鼠,1周1次,免疫5次后于大鼠左后足跖膜下注射TCE攻击,6h称左右后足重量计算肿胀度.取TCE免疫大鼠心脏血,分离并培养单个核细胞.将培养的细胞与系列浓度的TCE共同培养2d后,检测细胞酸性磷酸酶的活性,据此判断细胞的活化增殖程度.结果 TCE免疫大鼠攻击足肿胀度与空白对照组大鼠的相比差异显著(P＜0.005).体积分数为3%的TCE可使培养的大鼠血单个核细胞的增殖达到峰值.结论重复皮内注射TCE可使SD大鼠产生某种免疫反应.SD大鼠的单个核细胞可被TCE刺激活化.     

Fractional Factorial Design Study on the Performance of GAC-Enhanced Electrocoagulation Process Involved in Color Removal from Dye Solutions

The aim of this study was to determine the effects of main factors and interactions on the color removal performance from dye solutions using the electrocoagulation process enhanced by adsorption on Granular Activated Carbon (GAC). In this study, a mathematical approach was conducted using a two-level fractional factorial design (FFD) for a given dye solution. Three textile dyes: Acid Blue 74, Basic Red 1, and Reactive Black 5 were used. Experimental factors used and their respective levels were: current density (2.73 or 27.32 A/m²), initial pH of aqueous dye solution (3 or 9), electrocoagulation time (20 or 180 min), GAC dose (0.1 or 0.5 g/L), support electrolyte (2 or 50 mM), initial dye concentration (0.05 or 0.25 g/L) and current type (Direct Current—DC or Alternative Pulsed Current—APC). GAC-enhanced electrocoagulation performance was analyzed statistically in terms of removal efficiency, electrical energy, and electrode material consumptions, using modeling polynomial equations. The statistical significance of GAC dose level on the performance of GAC enhanced electrocoagulation and the experimental conditions that favor the process operation of electrocoagulation in APC regime were determined. The local optimal experimental conditions were established using a multi-objective desirability function method.