Determination of Chlorogenic Acid in Stems of Mussaenda pubescens Ait.f.by High Performance Liquid Chromatography

[Objectives] This study was conducted to establish a method for determination of chlorogenic acid in Mussaenda pubescens Ait.f.[Methods]HPLC used SHISEIDO C_(18) MG Ⅱ column( 5 μm,4.6 mml.D.× 250 mm) as chromatographic column and acetonitrile-0.4% phosphoric acid solution( 9∶91) as mobile phase.The separation was performed at a flow rate of 1.0 ml/min and a column temperature of 30 ℃,and the detection wavelength was set at 327 nm.[Results]Chlorogenic acid had a good linear relation in the range of 0.254 7-2.547 5 μg( R2= 0.999 9).The recovery rate was 97.8%,RSD = 1.82%( n = 9).[Conclusions]The content of chlorogenic acid in M.pubescens was determined by ultrasonic extraction and HPLC.The method was simple,stable and reliable and could be used for the quality control of M.pubescens.

玉叶金花水提物不同萃取部位的抗炎活性研究

目的从玉叶金花水提物不同萃取部位筛选出活性部位。方法采用二甲苯致小鼠耳郭肿胀实验模型及角叉菜胶致大鼠足跖肿胀实验模型对玉叶金花水提物不同萃取部位进行抗炎活性的考察。结果玉叶金花水提物乙酸乙酯萃取部位、正丁醇萃取部位及水溶性部位可显著减轻二甲苯致炎小鼠的耳肿胀度(与空白对照组比较,P<0.05)及由角叉菜胶引起的大鼠1,2,3 h的足肿胀度(P<0.05),石油醚萃取部位则作用不显著。结论乙酸乙酯萃取部位、正丁醇萃取部位及水溶性部位有抑制急性炎症的作用,为玉叶金花水提物抗炎活性部位。

玉叶金花丛枝症病害生理学初探

为探究玉叶金花(Mussaenda Pubescens Ait.f.)丛枝症病原物的致病机理,同时也为该病的控制提供生理生化依据,对健康和患有丛枝症的玉叶金花植株叶片的叶绿素、可溶性糖、可溶性蛋白质、保护酶活性、次生物质等10项生理生化指标进行了测定。结果表明,感病的玉叶金花植株的代谢发生了明显变化,与对照相比叶绿素含量和可溶性糖含量分别下降33.62%、37.80%,差异达极显著水平;可溶性蛋白质含量下降6.68%;过氧化氢酶(CAT)、过氧化物酶(POD)活性分别升高27.26%、109.85%;总酚和单宁含量分别升高81.93%、33.24%。

玉叶金花一新变种

报道了茜草科玉叶金花属玉叶金花一新变种,即白花玉叶金花MussaendapubescensAit.f.var.albaX.F.DengetD.X.Zhang,var.nov.

HPLC法同时测定壮药玉叶金花中9个成分的含量

目的:建立HPLC法同时测定壮药玉叶金花中山栀苷甲酯、玉叶金花苷酸甲酯、8-O-乙酰山栀苷甲酯、新绿原酸、绿原酸、隐绿原酸、3,5-O-二咖啡酰基奎宁酸、3,4-O-二咖啡酰基奎宁酸及4,5-O-二咖啡酰基奎宁酸9个成分的含量。方法:采用CAPCELL MGⅡC_(18)色谱柱(4.6 mm×250 mm,5μm),以乙腈(A)-0.1%磷酸水溶液(B)为流动相,梯度洗脱,流速1.0 mL·min^(-1),检测波长254 nm,柱温35℃,进样量10μL。结果:玉叶金花中9个成分在各自的线性范围内(新绿原酸0.151~189.2μg·mL^(-1),山栀苷甲酯0.768~960.4μg·mL^(-1),绿原酸0.775~968.7μg·mL^(-1),隐绿原酸0.886~1 107μg·mL^(-1),玉叶金花苷酸甲酯0.734~917.0μg·mL^(-1),8-O-乙酰山栀苷甲酯0.795~993.5μg·mL^(-1),3,4-O-二咖啡酰基奎宁酸0.872~1 090μg·mL^(-1),3,5-O-二咖啡酰基奎宁酸0.788~985.3μg·mL^(-1)和4,5-O-二咖啡酰基奎宁酸0.767~958.9μg·mL^(-1))均呈良好的线性关系,平均加样回收率、精密度、重现性和稳定性均符合有关规定。样品中9个成分的含量分别为新绿原酸0.30~1.57 mg·g^(-1),山栀苷甲酯0.34~5.20 mg·g^(-1),绿原酸0.34~5.84 mg·g^(-1),隐绿原酸0.32~2.26 mg·g^(-1),玉叶金花苷酸甲酯0.05~21.63 mg·g^(-1),8-O-乙酰山栀苷甲酯0.07~18.93 mg·g^(-1),3,4-O-二咖啡酰基奎宁酸1.02~4.21 mg·g^(-1),3,5-O-二咖啡酰基奎宁酸0.39~5.77 mg·g^(-1),4,5-O-二咖啡酰基奎宁酸1.38~5.25 mg·g^(-1)。结论:该方法可用于玉叶金花中9种成分的含量测定。