Quantitative estimation of monohydroxy saturated steroidal sapogenins in plant materials by densitometric thin-layer chromatography

1968 ◽  
Vol 34 ◽  
pp. 507-514 ◽  
Author(s):  
G. Blunden ◽  
R. Hardman
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Quantitative Estimation ◽  
Plant Materials ◽  
Layer Chromatography

scholarly journals Assessment of the quality of peppermint leaves by thin-layer chromatography in some objects of plant origin

2020 ◽  
Vol 19 (5-6) ◽  
pp. 148-154
Author(s):  
Vali A. Sahratov ◽  
Tamara L. Malkova ◽  
Ludmila N. Karpova ◽  
Anna A. Pospelova
Keyword(s):  
Medicinal Plant ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Biologically Active ◽  
Mentha Piperita ◽  
Plant Origin ◽  
Plant Materials ◽  
Layer Chromatography ◽  
Active Substances

The State Pharmacopoeia of the XIV edition defines the approach for the assessment of the quality of medicinal plant materials, it deals with the identification of the main groups of biologically active substances by thin layer chromatography. According to this approach, the analysis of some types of medicinal plant materials as a part of some objects of plant origin was carried out. The article presents the quality assessment algorithm as examplified by peppermint leaves (Mentha piperita L.), which are part of a variety of plant object.

scholarly journals Quantitative Determination of Triterpenes from Amphiptherygium adstringens by Liquid Chromatography and Thin-Layer Chromatography and Morphological Analysis of Cuachalalate Preparations

2006 ◽  
Vol 89 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Andrés Navarrete ◽  
Bharathi Avula ◽  
Vaishali C Joshi ◽  
Xiuhong Ji ◽  
Paul Hersh ◽  
...  
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
High Performance ◽  
Limit Of Detection ◽  
Gastric Ulcers ◽  
Array Detector ◽  
Plant Materials ◽  
Relative Standard ◽  
Layer Chromatography

Abstract Amphiptherygium adstringens (Anacardiaceae/Julianaceae), local name cuachalalate, is used in folk medicine for the treatment of cholelithiasis, fevers, fresh wounds, hypercholesterolemia, gastritis, gastric ulcers, and cancer of the gastrointestinal tract. The development of column high-performance liquid chromatographyphotodiode array detector (LC-PDA) and high-performance thin-layer chromatography (HPTLC)densitometry methods for the determination of masticadienonic acid and 3-hydroxymasticadienonic acid in cuachalalate preparations is described in this paper. Good separation of the compounds could be achieved by both methods. Either might be preparable depending on the requirements. The LC separation was performed on a Phenomenex Synergi MAX-RP 80A reversed-phase column operated at 40C with detection at 215 nm. The plant materials were extracted with methanol by sonication. The triterpenes present in the plant material and commercial extracts were separated with an acetonitrilewater reagent alcohol isocratic system. The limit of detection was 0.10.2 g/mL. The relative standard deviation values for the determination of triterpenes in plant extracts were less than 1.00%. This is the first report of an analytical method developed for the quantitative analysis of triterpenes from Amphiptherygium adstringens by LC-PDA and HPTLC. The stem bark showed higher amounts of triterpenes, and low amounts in root and stem root. The microscopic description of the crude drug of cuachalalate was also provided.

Application of Thin-Layer Chromatography to the Quantitative Estimation of Antioxidants: BHA, BHT, PG, and NDGA

1964 ◽  
Vol 47 (5) ◽  
pp. 888-893 ◽  
Author(s):  
Madhu R Sahasrabudhe
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Ethyl Alcohol ◽  
Quantitative Estimation ◽  
Two Dimensional ◽  
Suction Tube ◽  
Tube Assembly ◽  
Layer Chromatography ◽  
Colorimetric Methods

Abstract A procedure is described for the quantitative estimation of BHA, BHT, PG, and NDGA in lard. The antioxidants are extracted from n-hexane solutions of the fat with 80% ethyl alcohol and acetonitrile, separated by two-dimensional thin-layer chromatography using benzene and acetonitrile, and estimated quantitatively by colorimetric methods after extraction of the spots. A special flask for concentration and a suction tube assembly for spot pickup are described. Recoveries of the antioxidants from lard were in the following ranges: BHA, 98-101%; BHT, 96-101%; PG, 90-101%; NDGA, 82-98%. The advantages of the method over others in use are that (I) all four antioxidants can be estimated in one aliquot of fat, (2) PG and NDGA can be estimated when present together in mixtures, and (3) the isomers of BHA can be effectively separated.

scholarly journals DENSITOMETRIC VALIDATION OF LAPACHOL IN TECOMELLA UNDULATA SEEM BARK BY HIGH-PERFORMANCE THIN-LAYER CHROMATOGRAPHY

2018 ◽  
Vol 10 (7) ◽  
pp. 87
Author(s):  
Raj Richa ◽  
Siddiqui Nahida ◽  
Aeri Vidhu
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
High Performance ◽  
Quantitative Estimation ◽  
Marker Compound ◽  
Soxhlet Apparatus ◽  
Peak Areas ◽  
Tecomella Undulata ◽  
Layer Chromatography ◽  
Hptlc Method

Objective: To develop a validated high-performance thin layer chromatography (HPTLC) method for the quantitative estimation of Lapachol in a Soxhlet extracted bark of Tecomella undulata seem (T. undulata). Methods: The bark of T. undulata was extracted with chloroform by Soxhlet apparatus. The separation was achieved on a silica-gel 60 F254 HPTLC plate using toluene-ethyl acetate–glacial acetic acid (8.5:1.5:0.02 v/v/v) as a mobile phase. Densitometric analysis of Lapachol was carried out in absorbance mode at 254 nm.Results: The proposed method was accurate for the separation and resolution between peaks of the standard and Lapachol (5.04µg) with Rf value 0.77. Calibration curves were found to be linear over the concentration range (10-130µg) for Lapachol and correlation coefficient over (R2= 0.9973), indicating an excellent correlation between peak areas and concentrations of the marker compound. The experimentally derived LOD and LOQ for Lapachol were determined to be 0.028 µg and 0.086 µg respectively and the developed HPTLC-UV method showed lower %RSD and SEM, value indicating the method to be precise, accurate and robust.Conclusion: The study concludes that HPTLC-UV validation method can be very efficient and promising technique for the identification and quantitative analysis of Lapachol from T. undulata bark. The statistical analysis of data indicates that the developed method is reproducible and specific.

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