Results 221 to 230 of about 34,285 (260)

Simultaneous quantification of oleanolic acid, ursolic acid, betulinic acid and lupeol in different populations of five Swertia species by using HPTLC-densitometry: Comparison of different extraction methods and solvent selection

Industrial crops and products (Print), 2019
Swertia chirata (Family: Gentianaceae) is a potent and valuable medicinal herb used in various herbal formulations in Indian system of medicine. Different species of Swertia are being used as constituents in various herbal formulations. Present study was
P. Kaur, R.C. Gupta, A. Dey, Devendra Kumar Pandey   +3 more
semanticscholar   +1 more source

Quantitative HPTLC analysis — Industrial applications

Chromatographia, 1985
The use of derivatisation techniques in quantitative HPTLC in situ analysis is shown on the basis of two products that are very different in their manufacture: in situ derivatisations of thioglycolic acid compounds following chromatographic separation and the derivatisation in solution (dansyl method) for thiourea by quantitative in situ photometry are
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A validated HPTLC method for the simultaneous quantifications of three phenolic acids and three withanolides from Withania somnifera plants and its herbal products.

Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 2019
A simple, rapid and selective high-performance thin-layer chromatographic (HPTLC) method has been developed and validated for simultaneous determination of three withanolides (withaferin A, withanone and withanolide A) and three phenolic acids (caffeic ...
Varsha Tomar, T. Beuerle, Debabrata Sircar   +2 more
semanticscholar   +1 more source

Simultaneous microwave assisted extraction and HPTLC quantification of mangiferin, amarogentin, and swertiamarin in Swertia species from Western Himalayas

Industrial crops and products (Print), 2019
Swertia is one of the most widely traded genus of 150 species, many of which are used in Ayurvedic, Chinese, Tibetan and traditional medicine. Swertia herb is mostly traded and exported in dried or in extract forms.
P. Kaur, Devendra Kumar Pandey, R.C. Gupta, A. Dey   +3 more
semanticscholar   +1 more source

Quantification of bioactive lignans in sesame seeds using HPTLC densitometry: Comparative evaluation by HPLC-PDA.

Food Chemistry, 2019
Sesamin and sesamolin constitute the main bioactive secondary metabolites of sesame seeds (Sesamum indicum L., Pedaliaceae). In the present work, a rapid HPTLC-based methodology was developed in compliance with the requirements of the European ...
Eleni V Mikropoulou, E. Petrakis, A. Argyropoulou, S. Mitakou, M. Halabalaki, L. Skaltsounis   +5 more
semanticscholar   +1 more source

Chemometrie in der HPTLC

2014
Chemometrie beschreibt die Anwendung mathematisch‐statistischer Methoden auf analytische Daten. Das Ziel dabei ist nicht nur, so viel Informationen wie moglich aus den Messdaten abzuleiten. Chemometrische Methoden helfen auch bei der Auswahl der optimalen Messparameter.
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Standardized HPTLC for Reproducible Chemical Fingerprinting

High-performance thin-layer chromatography (HPTLC) plays a crucial role in establishing the chemical fingerprint of natural products (NPs) during analysis. This technique involves standardized procedures for each step, ensuring the reproducibility of results.
Thi Kieu Tiên Do, Ilona Trettin, Eike Reich   +2 more
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Eco-friendly micellar HPTLC technique for the simultaneous analysis of co-formulated antibiotic cefoperazone and sulbactam in pure form and vial pharmaceutical formulation

Jpc-journal of Planar Chromatography-modern Tlc, 2021
Roshdy E. Saraya, Eman A. Abdel Hameed
semanticscholar   +1 more source

Authentication of phacelia honeys (Phacelia tanacetifolia) based on a combination of HPLC and HPTLC analyses as well as spectrophotometric measurements

LWT, 2019
The growing interest in the quality of honey affects customer preferences and consumption trends. Generally, monofloral honeys are more expensive than multifloral honeys, and the price strictly depends on its botanical origin.
Natalia Stanek, D. Teper, P. Kafarski, I. Jasicka-Misiak   +3 more
semanticscholar   +1 more source

TLC/HPTLC in Biomedical Applications

2010
The main objective of this chapter is to encapsulate the applications of thin-layer chromatography (TLC) and high-performance thin-layer chromatography (HPTLC) as used in the analysis of compounds of pharmaceutical importance. The chapter discusses the advantages of using TLC or HPTLC for biomedical applications and summarizes important information on ...
A. Mohammad, A. Moheman
openaire   +1 more source