Results 171 to 180 of about 11,520 (222)

HPTLC fingerprint identification of commercial ginseng drugs ‐ reinvestigation of HPTLC of ginsenosides

Journal of High Resolution Chromatography, 1987
AbstractThe optimized HPTLC of ginsenosides reported in this paper shows that the recommended solvent system has a higher resolution, greater spot capacity, and better reproducibility by comparison with the established ones in the previous literature. Detection and scanning in the fluorescence mode after visualization with 5% sulfuric acid/EtOH by the ...
Xie Peishan, Yan Yuzhen
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HPTLC–densitometric and HPTLC–MS Methods for Analysis of Triterpenoids from Cucurbita maxima Peel

The Journal of Plant Science Research, 2023
Fruits and vegetables are integral part of our day to day. They are the main source of food for the living system. Large amount of agro-waste generated from food industries and kitchen pertaining to biggest nutritional loss, environmental problems and economical implications.
Apurva P. Bhatkande, Prafullchandra Teklae   +1 more
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HPTLC–MS Coupling: New Dimension of HPTLC

2010
The direct coupling of TLC/HPTLC with mass spectrometry (MS) is of particular interest because of the later’s high sensitivity, rapid analysis, and ability to aid structural characterization. The conventional ionization method requires heating of the analyte and was suitable only for the analyses of volatile and thermally stable compounds. In contrast,
Ajai Prakash Gupta, Suphla Gupta
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HPTLC assay of cephalexin and cefaclor in pharmaceuticals

Biomedical Chromatography, 1998
A simple and reliable HPTLC method for the simultaneous determination of cephalexin and cefaclor is developed and validated. The methanol-ethyl acetate-acetone-water (5:2.5:2.5:1.5 v/v/v/v) solvent system is used for the quantitative evaluation of chromatograms.
Agbaba, Danica, Erić, Slavica, Živanov-Stakić, Dobrila, Vladimirov, Sote   +3 more
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HPTLC, HPTLC-MS/MS and HPTLC-DPPH methods for analyses of flavonoids and their antioxidant activity in Cyclanthera pedata leaves, fruits and dietary supplement

Journal of Liquid Chromatography & Related Technologies, 2019
HPTLC silica gel, amino and C18 plates in combination with different developing solvents were explored for the first HPTLC chemical profiles of flavonoids and sugars in crude extracts from leaves and fruits of caigua (Cyclanthera pedata Scrabs) harvested in Slovenia and Italy. New HPTLC and HPTLC-MS methods for analyses of flavonoids are based on HPTLC
Francesca Orsini, Irena Vovk, Vesna Glavnik, Urška Jug, Danilo Corradini   +4 more
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Chemometrics in HPTLC

2010
From the beginning of the 1950s, paper chromatography was used to quantify samples. The paper was made transparent by liquids and transmitted light was measured according to the Lambert-Beer law. Silver-impregnated media were used as detectors, adapted from paper photography.
Bernd Spangenberg, Colin F. Poole, Christel Weins   +2 more
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Stability indicating HPTLC determination of piroxicam

Journal of Pharmaceutical and Biomedical Analysis, 2000
A rapid and sensitive HPTLC method was developed and validated for the estimation of Piroxicam (PM). Spectrodensitometric scanning-integration was performed at an absorbance wavelength of 360 nm. To justify the suitability, accuracy and precision of the proposed method, recovery studies were performed at three concentration levels.
S P, Puthli, P R, Vavia
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Determination of common triterpenoids and phytosterols in vegetable waxes by HPTLC—densitometry and HPTLC—image analysis

Journal of Liquid Chromatography & Related Technologies, 2016
ABSTRACTScreening of triterpenoids and phytosterols in unhydrolyzed and hydrolyzed cuticular waxes of zucchini, eggplant, tomato, red pepper, mangold, spinach, lettuce, white-colored radicchio di Castelfranco, radicchio Leonardo, white cabbage, red cabbage, and Savoy cabbage was performed on high-performance thin-layer chromatographic (HPTLC) silica ...
Mitja Martelanc, Katerina Naumoska, Irena Vovk   +2 more
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Review on Hyphenation in HPTLC-MS

Research Journal of Pharmacy and Technology, 2020
TLC-MS is a versatile technique for separation as well as identification of Pharmaceuticals and Phytopharmaceuticals. Traditionally the separation was carried out by TLC/HPTLC then the separated materials was removed and then identified by Mass spectrometry. Many hyphenated techniques like HPTLC-MS, GC-MS, HPLC-MS, MS-MS Etc. are available.
R. P. Bhole, S. R. Jagtap, K. B. Chadar, Y. B. Zambare   +3 more
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An Overview of HPTLC with Chemometrics

Journal of Pharmaceutical Quality Assurance and Quality Control
High-Performance Thin-Layer Chromatography (HPTLC) is a powerful method for the qualitative and quantitative assessment of complex mixtures in medicines, herbal products, and food analysis when combined with chemometric analysis. HPTLC enables efficient separation with high resolution, and chemometrics uses multivariate statistical methods like PCA and
Beaulah Shalemu Rani Domathoti, Eswari Guntamukkala, Harika Gajjala, Parvathi Katari, Sukanya Basinikonda, Vani Mamillapalli, Padmalatha Kantamaneni   +6 more
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