薄层色谱法分析灵芝多糖中的单糖组成

目的 测定灵芝多糖中的单糖组成.方法 采用微晶纤维素薄层板,展开剂系统为正丁醇：乙酸乙酯：吡啶：水（6：1：5：4） 下二次展开,苯胺-邻苯二甲酸为显色剂.结果 在该展开剂系统下,实现了各单糖组分的分离,灵芝多糖主要由葡萄糖、半乳糖组成.结论 方法简单易行,重复性好,该方法能有效分析灵芝多糖中的单糖组成.     

几种习用药材的显微及薄层色谱研究

通过对水蔓菁、桃奴等习用药材市售状况、质量标准现状的探寻,重新建立其显微和薄层色谱专属性的鉴别方法,以达到辨别真伪、澄清混杂品种,控制药材质量,确保临床安全有效用药的目的。     

山鸡椒不同部位挥发油及水溶性成分的薄层色谱鉴别

目的 建立山鸡椒不同部位挥发油及水溶性成分的薄层色谱(TLC)鉴别的方法 .方法 分别提取山鸡椒不同部位的挥发油及水溶性成分,开展色谱条件的优化,建立山鸡椒挥发油及水溶性成分的薄层色谱鉴别方法 .结果 山鸡椒根、茎、叶、果实部位的挥发油和水溶性成分在所优化色谱条件下分离效果好,斑点清晰;山鸡椒根与茎TLC特征斑点较为近似.结论 所用方法 专属性强,重复性好,可为山鸡椒不同部位的质量控制和资源开发提供参考.     

黄芩薄层色谱鉴别研究

目的：改善《中国药典》中黄芩薄层色谱鉴别方法。方法：将黄芩薄层色谱鉴别中的展开剂改为“甲苯-丙酮-甲醇-冰乙酸（8：1：1：1）”。结果：该方法操作简便,稳定性、重现性均较好。结论：该方法可以用于黄芩原料的薄层鉴别。     

不同产地三白草药材黄酮类成分薄层色谱鉴别研究

目的建立不同产地三白草药材黄酮类成分的质量控制方法。方法采用薄层色谱法定性鉴别三白草药材中的芦丁、金丝桃苷、异槲皮苷、槲皮苷等4种黄酮类成分。结果薄层鉴别方法斑点清晰,分离度好。结论所建立的方法简便、快速,为进一步完善三白草的质量标准提供了参考依据。     

养血安神片薄层色谱鉴别

目的:建立养血安神片的质量控制方法.方法:采用薄层色谱法对处方中仙鹤草、墨旱莲、熟地黄和首乌藤进行定性鉴别.结果:薄层色谱斑点清晰,阴性对照无干扰,重现性好.结论:该方法可以作为养血安神片的质量控制标准.     

藻糖蛋白单糖组成两种分析方法的初步探讨

目的探讨藻糖蛋白单糖组成的测定方法。方法采用气相色谱法和离子色谱法测定单糖组成。结果气相色谱法1不适于藻糖蛋白单糖分析,气相色谱法2较适合藻糖蛋白单糖分析;离子色谱法测得藻糖蛋白含7种单糖。结论两种方法均可用于单糖的定性定量分析,灵敏度高,重现性好。     

薄层色谱与发光技术在药物分析中的初步应用

薄层色谱与发光技术在药物分析中的初步应用庞志功，汪宝琪（西安医科大学药学系７１００６１）薄层色谱（Ｔｈｉｎｌａｙｅｒｏｆ　ｃｈｒｏｍａ—ｔｏｇｒａｐｈｙ）是液相色谱中的一种简便易于操作的分离技术，在药物分析中，尤其是在中草药有效成分分离和血药浓度的检...     

清火片薄层色谱鉴别提高

目的建立清火片薄层色谱鉴别。方法采用薄层色谱法（TLC）对处方中的主要成分大青叶进行鉴别。结果在TLC图谱中可检出大青叶的特征斑点。结论该方法优于现存的药品标准鉴别方法,简便易行,重现性好,为清火片提供了一种质量控制方法。     

Development of validated high-performance thin layer chromatography for quantification of aristolochic acid in different species of the Aristolochiaceae family

This study was undertaken to isolate and quantify aristolochic acid in Aristolochia indica stem and Apama siliquosa root. Aristolochic acid is an important biomarker component present in the Aristolochiaceae family. The isolation method involved simple solvent extraction, precipitation and further purification, using recrystallization. The structure of the compound was confirmed using infrared spectroscopy, mass spectrometry and nuclear magnetic resonance. A specific and rapid high-performance thin layer chromatography (HPTLC) method was developed for analysis of aristolochic acid. The method involved separation on the silica gel 60 F₂₅₄ plates using the single solvent system of n-hexane: chloroform: methanol. The method showed good linear relationship in the range 0.4–2.0 μg/spot with r² = 0.998. The limit of detection and limit of quantification were 62.841 ng/spot and 209.47 ng/spot, respectively. The proposed validated HPTLC method was found to be an easy to use, accurate and convenient method that could be successfully used for standardization and quality assessment of herbal material as well as formulations containing different species of the Aristolochiaceae family.     

薄层色谱扫描法检测血清中对乙酰氨基酚

目的：本研究拟采用薄层色谱扫描法建立快速测定患者血清中对乙酰氨基酚浓度的方法，为指导临床合理用药和中毒急救提供依据。方法：实验取１００μｌ血清，用蒸馏水稀释１０倍，再取１００μｌ稀释血清用乙醚提取，４０℃水浴挥干，残渣用乙醇溶解点样，展开后以λ测２４５ｎｍ，λ参３１０ｎｍ薄层扫描测定。结果：本法板间测定误差小，回收率高，线性范围宽，能准确测定患者血清浓度。结论：这一方法与文献所记载的ＨＰＬＣ和ＧＣ相比，具有简便快速、费用低和不需要做衍生化的特点，为临床急诊中毒分析和血药浓度监测提供了新的快速简便的方法     

灰黄霉素中灰黄霉酸杂质及色泽的考查

目的:本文采用薄层色谱法考查了不同厂家灰黄霉素中灰黄霉酸杂质的存在.方法:以丙酮为溶媒,精制灰黄霉素,摸索分离条件,探讨杂质限度,考查产品色泽.结果:杂质均值为0.276%,RSD为0.168%.结论:对改进产品检验方法、提高产品质量具有一定的参考价值.     

薄层色谱法检查牛奶中的三聚氰胺

目的:建立牛奶中三聚氰胺检查的薄层色谱法。方法:用固相萃取法制备供试品溶液。使用硅胶G预制板,以丙酮-氯仿-氨水(7∶0.5∶2)为展开剂,以1%对二甲氨基苯甲醛的盐酸乙醇溶液为显色剂,在紫外灯(365nm)下检视。结果:本法的专属性好,灵敏度高,检测限为0.5μg,可用于牛奶中微量三聚氰胺的检查,最低检出量为0.5 mg.kg-1。采用本法对3家公司的液态奶进行了检查,结果三聚氰胺含量均低于0.5 mg.kg-1。结论:本文建立的方法操作简便快速、灵敏度高、成本低,可用于对大量样品的筛查,特别适用于基层的推广应用。     

Determination of oligosaccharides and monosaccharides in Hakka rice wine by precolumn derivation high-performance liquid chromatography

This article presents a precolumn derivatization procedure with 1-phenyl-3-methyl-5-pyrazolone (PMP) reagent to detect oligosaccharides and monosaccharides in Hakka rice wine. The subsequent separation of the derivatized glucose–PMP also was performed using a mobile phase consisting of the molar ratio of acetonitrile to ammonium acetate buffer (0.1M) of 22:78 at a flow rate of 1.0 mL/min with the column temperature of 35°C, and the pH of ammonium acetate buffer at 5.5. The optimum derivation conditions were as follows: reaction temperature, 70°C; reaction time, 30 minutes; molar ratio of PMP to glucose, 10:1 (v/v); molar ratio of sodium hydroxide to glucose, 3:1 (v/v). The recovery rates were between 93.13% and 102.08% with relative standard deviation of 0.96–2.48%. The established method provides sufficient sensitivity with values of limit of detection of 0.09–0.26 mg/L and limit of quantification of 0.27–0.87 mg/L for determination of oligosaccharides and monosaccharides.     

胶束薄层色谱法同时测定APC片中3组分含量

应用胶束薄层色谱法同时测定复方乙酰水杨酸片 (APC)中的阿司匹林 (A)、非那西汀 (P)和咖啡因 (C)的含量。在聚酰胺薄膜上 ,以 2 %SDS 乙腈 NaAc Na2 HPO4 ·1 2H2 O(3∶1∶1 )为展开剂 ,测定波长为 2 73nm ,单波长反射法锯齿扫描 ,结果 ,点样量在 0 9～ 4 5 μg,A组分的点样量X(mi)与斑点积分面积的比值Y(Ai/As)呈良好的线性关系 ,其回归方程为 :Y =2 0 0 3 1X +0 81 5 9,r =0 9981 ,平均回收率为 1 0 1 3 % ,RSD 1 9% ;点样量在 0 6～ 3 0 μg,P组分的回归方程为 :Y =1 2 1 4 5X +0 4 1 0 6,r=0 9978,平均回收率为 99 2 % ,RSD 2 4 % ;点样量在 0 1 4～ 0 7μg,C组分的回归方程为 :Y =2 1 3 63X +0 64 5 2 ,r=0 9984 ,平均回收率为 :98 4 % ,RSD 3 1 %     

连桂清心片的薄层色谱鉴别

目的：建立连桂清心片中甘草和黄连的薄层色谱鉴别方法,为连桂清心片质量标准提供依据。方法分别采用不同的方法处理样品,分别以甘草酸铵、盐酸小檗碱为对照品,以甘草、黄连为对照药材,在硅胶 G 薄层板上点样,以适宜的展开剂展开,取出,晾干,显色剂显色。结果在薄层色谱中能够检出连桂清心片中的甘草、黄连,连桂清心片供试品溶液色谱中,与对照品或对照药材色谱相对应位置,色谱斑点清晰,荧光斑点显示相同的颜色,分离良好且阴性对照无干扰,均能有效提供连桂清心片的鉴别特征。结论建立的两种薄层色谱鉴别方法简便,专属性强,重现性好,可用于连桂清心片的薄层定性鉴别。     

Gold nanoparticles grafted modified silica gel as a new stationary phase for separation and determination of steroid hormones by thin layer chromatography

A new thin layer chromatographic layer using gold nanoparticles grafted 3-triethoxysilyl propylamine modified silica gel (Au NPs-APTS modified silica gel) was developed as a stationary phase for separation and determination of two steroid hormones, namely progesterone and testosterone. Acetone–n-hexane 25:75 (v/v) was used as the mobile phase, and the results were compared with those obtained using plain (i.e., unmodified) silica gel plates. Some chromatographic parameters used for separation of the two steroids on an Au NPs-APTS modified silica gel plate as well as on a plain silica gel plate, including ΔR_F, separation factor (α), and resolution (R_S), were evaluated and compared. The reproducibility of R_F values was also determined by analysis of the two steroids in 7 consecutive days on both plates. Validity of the method was investigated, and a wide linear range of 1–200 ng per spot, and low detection limits of 0.16 ng and 0.13 ng per spot, low quantification limits of 0.51 ng and 0.40 ng per spot, and good precision (expressed as percent relative standard deviation) lower than 3.1% and 2.7% were obtained for progesterone and testosterone, respectively. As the results revealed, the proposed method is rapid and sensitive, and it is applicable to separation and determination of progesterone and testosterone in biological matrices such as urine samples.     

Development and validation of a high-performance thin layer chromatography method for the determination of cholesterol concentration

An accurate, sensitive, precise, reliable, and quick method for the determination of cholesterol content by high-performance thin layer chromatography is developed. In this method, aluminum-backed precoated silica gel 60 F₂₅₄ plates were used as the stationary phase and the samples were sprayed with the help of CAMAG sample applicator Linomat 5. The chromatogram was developed with the mobile phase consisting of chloroform:methanol (9.5:0.5, v/v). The samples were detected using CAMAG Scanner 4 and evaluated using the method developed on winCATS software. Densitometric analysis of cholesterol was performed in absorbance mode at 200 nm. In this solvent system, cholesterol gave a compact spot with an R_f value of 0.63 ± 0.03. The linear regression analysis of data for the calibration curve showed good linearity over a concentration range of 2–7 μg/spot with a regression value of 0.99933 and standard deviation of 1.44%. The limit of detection and limit of quantification were found to be 100 ng/spot and 500 ng/spot, respectively. Using the developed method, the concentration of cholesterol in the saponified and unsaponified egg yolk sample was determined. This method was found to be reproducible and can even be used for samples containing complex matrices.     

肝介安颗粒中黄芩和白芍的鉴别及延胡索乙素的含量测定

目的：建立肝介安颗粒剂的质量标准。方法：用薄层色谱法对处方中黄芩和白芍进行鉴别；用RP-HPLC法测定处方中延胡索乙素的含量，色谱条件：依利特ODS2柱，203．82mmol／L乙酸铵溶液-乙腈（75：25）为流动相，乙酸调pH4．4，流速0．8mL／min，检测波长280nm。结果：薄层色谱中，在对照品和生药的相应位置处，黄芩、白芍供试品分别显暗绿色和蓝紫色斑点，Rr值分别为0．65和0．40，阴性对照液没有斑点。RP-HPLC中，延胡索乙素的线性范围为10．08～120．96μg／mL，回归方程为A=17．855c＋1．8092（r=0．9996）。平均加样回收率为99．94％，RSD为1．60％（n=5）。结论：该方法简便、准确，可用于肝介安颗粒剂的质量控制。