HPLC同时测定新疆不同产地新塔花中3种有效成分的含量

为更加全面的反映维吾尔族药材新塔花的内在质量,对新塔花中的多种成分进行HPLC同步测定,比较不同产地新塔花中咖啡酸、迷迭香酸、蒙花苷的含量。样品制备采用回流提取,选用ZORBAX SB-C18色谱柱（4.6 mm×250 mm,5.0μm）;流动相为甲醇（A）-0.2%冰醋酸溶液（B）,梯度洗脱,检测波长340 nm,柱温30℃,流速1.0 m L·min-1。咖啡酸、迷迭香酸、蒙花苷分别在240 mg·L-1（r=0.999 9）,360 mg·L-1（r=1）,7140 mg·L-1（r=0.999 9）呈良好的线性关系,平均回收率分别为100.9%（RS 1.3%）,98.25%（RSD 2.0%）,101.2%（RSD 1.5%）。测得13批新塔花中咖啡酸质量分数在0.081.07mg·g-1、迷迭香酸质量分数在1.233.59 mg·g-1、蒙花苷质量分数在2.0810.90 mg·g-1。该方法结果准确、重复性好,可用于测定新塔花药材中咖啡酸、迷迭香酸、蒙花苷的含量;3种成分在不同批次的新塔花药材中的含量差异显著,其内在质量差异较为明显。

Protection of Citrullus colocynthis Fruit Extracts on Carbon Tetrachloride-induced and Bacillus Calmette-Guerin plus Lipopolysaccharide-induced Hepatotoxicity in Mice

Objective To investigate the hepatoprotective activities of the extracts from Citrullus colocynthis(ECC),a native plant used as traditional Uigur Medicine on acute liver injury in mice.Methods The activities of ECC of petroleum ether(ECCPE),chloroform(ECCC),ethyl acetate(ECCEA),n-butyl alcohol(ECCBA),and water(ECCW) were evaluated in vivo using two experimental models,carbon tetrachloride(CCl4)- and bacillus calmette-guerin(BCG) plus lipopolysaccharide(LPS)-induced acute hepatotoxicity in mice.The contents of aspartate aminotransferase(AST) and alanine aminotransferase(ALT) in serum were determined and the liver histological examination was carried out,respectively.Results The pretreatment with ECC for 7 d obviously reduced the impact of CCl4toxicity on the serum markers of liver damage,ECCEA and ECCC with a significant difference of AST(P < 0.01,0.05,respectively) and ALT(P < 0.05,0.01,respectively).The protective activity was reconfirmed against BCG + LPS-induced injury and the serum enzymatic levels were obviously elevated,for ECCEA and ECCC with a significant difference of AST(P < 0.05,0.01,respectively) and ALT(P < 0.01,0.05,respectively).Conclusion That ECCEA and ECCC are the potent hepatoprotective extracts that could protect liver against the acute injury,and this ability might be attributed to their hepatoprotective potentials.