红花中红花黄色素含量的反相高效液相色谱测定

本文分离纯化了红花（Carthamus tinctorius L）中Safflower yellow A，Safflomin A，Safflower yellow B，Safflomin C四种红花黄色素，并用所纯化的红花黄色素做标准品，用反相高效液相色谱法，梯度洗脱，同时测定了不同产地红花中四种红花黄色素的含量。该方的法准确度高，重现性好。     

RP-HPLC测定十四味羚牛角丸中羟基红花黄色素A的含量

应用高效液相色谱的方法建立藏药十四味羚牛角丸中羟基红花黄色素A的定量分析.色谱条件:用Symmetry C18(5μm,4.6×250 mm);流动相:V(甲醇):V(水):V(H3PO4)=26:74:0.05,检测波长:403 nm,流速:1.0mL/min,羟基红花黄色素A在6～96μg/mL范围内呈良好线性关系,r=0.9996,十四味羚牛角丸中羟基红花黄色素A的回收率为99.24%(RSD=1.9%,n=5).本方法简便、快速、准确、灵敏度高、重现性好,可用于藏药十四味羚牛角丸中羟基红花黄色素A的含量测定.     

HPLC法测定红花罂粟中蒂巴因的含量

建立了一种采用辛烷基键合硅胶为填充剂的固相小柱纯化样品，用高效液相色谱对红花罂粟中蒂巴因含量进行测定的方法。对照品在0．01～0．09g／L浓度范围内线性良好，标准曲线的相关系数为0．9992；样品中蒂巴因的平均回收率为100．08％，RSD为0．48％。该测定方法简便快捷，准确度高，可以成为红花罂粟植物的质量控制方法。     

RP-HPLC法测定烟草中绿原酸含量的研究

采用超声波提取、反相高效液相色谱测定烟叶中绿原酸,用内标法进行定量,并对超声波提取烟叶中绿原酸的提取条件进行了优化,结果表明:用60%的乙醇溶液,在50 ℃、pH 4条件下,超声提取 45 min效果最佳.该法具有良好的线性(相关系数为0.999 9),检测限为 1.4×10-2 mg/10 mL (S/N=3) 加标回收率为 101.5%,方法RSD为1.58%.方法快速、简单、准确.     

RP-HPLC法测定中药材蚂蟥中蚂蟥多肽的含量

建立了一种测定蚂蟥药材中抗凝血活性多肽类化合物蚂蟥多肽含量的反相高效液相色谱(RP-HPLC)新方法。色谱柱采用Hypersil-C18柱(200×4.6mm,5μm),流动相为乙腈和水(体积比为2:98),加入质量分数0.03%KH2PO4,再用体积分数36%HAc调至pH 3.80,检测波长280 nm,流速1.0 mL/min,柱温35℃。当蚂蟥多肽的质量浓度为186~942 mg/L时,其峰面积与质量浓度的线性关系良好(r=0.9996);平均回收率为99.8%,RSD<2%。方法可作为蚂蟥药材或含有蚂蟥药材的中成药的质控方法。     

反相液相色谱对多肽的分离、纯化与制备

用反相高效液相色谱（RPLC）对两种化学合成多肽－－32肽和21肽进行了分离、纯化和制备。在用分析型RPLC色谱柱对多肽样品的制备过程中，对其进样量和洗脱梯度进行了选择。每次进样量为5mg，在最优化色谱条件下，用RPLC一步就可对21肽进行分离纯化，其纯度达到98.6%。而32肽由于样品组分更加复杂，RPLC一步纯化后其纯度仅有80％。通过对色谱分离条件的再次优化，对32肽进行二次分离纯化，纯度达杂，RPLC一步纯化后其纯度仅有80％。通过对色谱分离条件的再次优化，对32肽进行二次分离纯化，纯度达到96.4%。在其最优化条件下，通过多次样品收集和冷冻干燥，分别制备了高纯度的21肽和32肽各100mg。     

RP-HPLC法测定5-羟基色氨酸

建立了高效液相色谱法测定5-羟基色氨酸. 在优化条件下, 色谱柱： Symmetry C18柱;流动相： V（甲醇）：V（水）＝5：95;检测波长： 276 nm. 5-羟基色氨酸对照品溶液在0.8～4.0 μg的范围内与峰面积呈良好线性关系, r=0.9992;回收率为99.94%, RSD=1.35%.     

决明子药材中大黄酚含量的反相HPLC法测定

以甲醇 -水 (体积比80∶20)为流动相,采用反相高效液相色谱法测定了生、炒决明子中大黄酚的含量 ,平均回收率98.1%,RSD为2.3%(n=5)。方法简便、灵敏、重现性好。     

高效液相色谱法测定红花中的羟基红花黄色素A

建立了菊科植物红花中的主要有效成分羟基红花黄色素A的高效液相色谱定量分析方法。用90 ℃水提取,以甲醇-0.5%磷酸水溶液(体积比为40∶60)为流动相,检测波长400 nm。该方法的最低检出限为4 ng (按S/N=3计)。在羟基红花黄色素A的质量浓度为0.04-0.40 g/L(相当于绝对进样量为0.8-8.0 μg)时线性良好,方法回收率高,重现性好。对26个不同产地和购买地的红花中的羟基红花黄色素A进行了测定,结果表明不同来源的红花中羟基红花黄色素A含量的差异较大。     

动态超声萃取分光光度法在线测定红花中的总红花黄色素

用动态超声萃取分光光度法在线测定了红花中的红花黄色素, 对萃取条件进行了优化. 萃取与测定同时进行, 大大缩短了样品的分析时间, 简化了分析过程. 通过与静态超声萃取、振荡萃取和索式萃取进行比较, 不仅证明该方法耗时最短, 而且样品用量小, 萃取产率较高. 实际样品分析得到了满意的结果.     

Complete Assignment of the 1H and 13C NMR Spectra of Carthamin Potassium Salt Isolated from Carthamus tinctorius L.

Carthamin potassium salt isolated from Carthamus tinctorius L. was purified by an improved traditional Japanese method, without using column chromatography. The ¹H and ¹³C nuclear magnetic resonance (NMR) signals of the pure product were fully assigned using one- and two-dimensional NMR spectroscopy, while the high purity of the potassium salt and deprotonation at the 3′ position of carthamin were confirmed by atomic adsorption spectroscopy and nano-electrospray ionization mass spectrometry.     

Fatty acid composition and tocopherol profiles of safflower (Carthamus tinctorius L.) seed oils

The oil contents of safflower seeds ranged from 23.08% to 36.51%. The major fatty acid of safflower oil is linoleic acid, which accounted for 55.1–77.0% in oils, with a mean value of 70.66%. Three types of tocopherols were found in safflower oil in various amount α-tocopherol, β-tocopherol and γ-tocopherol, ranged from 46.05 to 70.93 mg/100 g, 0.85 to 2.16 mg/100 g and trace amount to 0.45 mg/100 g oils, respectively. This research shows that both fatty acid and tocopherol contents differ significantly among the safflowers.     

A new flavonol glycoside from the florets of Carthamus tinctorius L.

One new flavonol glycoside, 6-hydroxykaempferol-3-O-β-D-glucoside-7-O-β-D-glucuronide (1), together with eight known flavonoids and three known quinochalcones, was isolated from the florets of Carthamus tinctorius L. Their structures were determined by extensive spectroscopic analyses. Their cardioprotective effects against H₂O₂-induced apoptosis in H9c2 cells were also evaluated; compounds 1, 2, 4–5, 7–10 and 12 provided significant protective effects on H₂O₂-induced H9c2 cells at the concentration of 25 μg/mL.     

Corrosion Inhibition of Mild Steel by Safflower (Carthamus tinctorius) Extract: Polarization,EIS, AFM,SEM, EDS,and Artificial Neural Network Modeling

Inhibitory action of safflower (Carthamus tinctorius) extract (SE) was investigated in hydrochloric acid solution through electrochemical (polarization, EIS), and surface analysis (optical microscopy/atomic force microscopy (AFM)/scanning electron microscopy (SEM)/energy dispersive spectroscopy (EDS)) techniques. In addition, Inhibition efficiency was predicted by neural network (NN) modeling in elevated temperatures and different acid concentrations. The thermodynamic adsorption parameters propose that this inhibitor retard both cathodic and anodic processes through physical adsorption and blocking the active corrosion sites. Surface analysis techniques confirm the inhibitor adsorption on the metal surface, which is in accordance with the variation of apparent activation energy of corrosion. Finally, inhibition efficiency is discussed in terms of protective film formation.     

反相高效液相色谱法同时测定苦豆子及其制剂中苦参碱和氧化苦参碱

建立了用反相高效液相色谱法测定苦豆子及其制剂中苦参碱和氧化苦参碱的方法。色谱条件：ＯＤＳ柱，甲醇－水－三乙胺，φ（甲醇）＝０．５５，φ（三乙胺）＝０．０００２为流动相，紫外检测波长２１５ｍｍ。为苦豆子及共制剂的质量评价提供了一种方法     

高效液相色谱法测定硫酸伏拉帕沙原料药中杂质

建立了高效液相色谱法测定硫酸伏拉帕沙原料药中杂质的方法.采用ACE Excel C18(4.6 mmx 250 mm,5 pm)色谱柱;以pH 2.5的H3PO4溶液为流动相A,乙腈为流动相B,梯度洗脱;检测波长为260 nm;进样量为20 μL.结果表明,主成分与各杂质的分离度良好,各已知杂质在测定的范围内具有良好的...