Akademiai Kiado Zrt.

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HPTLC Determination of Polyaromatic Hydrocarbons in Smokers’ Hair
Akademiai Kiado Zrt. - Tập 14 - Trang 330-333 - 2001
Irina V. Marutsenko, Tatyana V. Polenova, Eduard D. Virus, Andrew G. Borzenko, Igor A. Revelsky
A method developed for quantitative determination of the total amount of polyaromatic hydrocarbons (PAH) in human hair has been applied to the analysis of smokers’ hair. The procedure involves washing the hair with dichloromethane, acid decomposition of the hair matrix, micro-liquid extraction, and HPTLC determination of total PAH concentrations in the whole extract. The concentrations of PAH in h...... hiện toàn bộ
Densitometric HPTLC Method for Analysis of Triterpenoids in the Leaves of Jovibarba sobolifera (Sims.) Opiz (Hen and Chickens Houseleek)
Akademiai Kiado Zrt. - Tập 22 - Trang 367-369 - 2009
Katarzyna Szewczyk, Łukasz Komsta, Agnieszka Skalska-Kamińska
High performance thin-layer chromatography (HPTLC) combined with densitometry has been used for analysis of the triterpenoid content of acetone and ethyl acetate extracts of the leaves of Jovibarba sobolifera (Sims.) Opiz. After optimization of the extraction process, HPTLC separation was successfully standardized, using silica gel plates washed with methanol and dichloromethane, dichloromethane-e...... hiện toàn bộ
Phương Pháp Định Lượng Guaifenesin, Pseudoephedrine Hydrochloride và Chất Liên Quan Guaifenesin (Guaiacol) Bằng Kỹ Thuật TLC—Densitometric Dịch bởi AI
Akademiai Kiado Zrt. - Tập 26 - Trang 73-77 - 2013
Nada S. Abdelwahab, Eglal A. Abdelaleem
Bài báo nghiên cứu này mô tả một phương pháp lập phương giản đơn và nhạy cảm với kỹ thuật sắc ký lớp mỏng (TLC) phân tích định lượng đồng thời guaifenesin (GUF) và pseudoephedrine HCl (PSH) trong các hỗn hợp nhị nguyên và trong sự có mặt của tạp chất guaifenesin và chất liên quan, guaiacol. Phương pháp sắc ký đề xuất đã được phát triển sử dụng các tấm silica gel 60 F254 làm pha tĩnh với hệ phát tr...... hiện toàn bộ
Development and Validation of HPTLC Method for Simultaneous Determination of Quercetin and Kaempferol in Leaves of Two Chemotypes of Centella asiatica
Akademiai Kiado Zrt. - Tập 25 - Trang 433-438 - 2012
Chaitali Joshi, Jay Savai, Alice Varghese, Nancy Pandita
A simple, accurate and precise high-performance thin-layer chromatography (HPTLC) method was developed and validated for the simultaneous determination of quercetin and kaempferol in the methanolic extract of leaves of Centella asiatica. Leaves of two different chemotypes of Centella asiatica were obtained from two different regions viz. Maharashtra and Gujarat state, and a comparative study was p...... hiện toàn bộ
Morphological, cytological and phytochemical studies in naturally occurring diploid and tetraploid populations of Physochlaina praealta from high altitudes of Trans-Himalaya
Akademiai Kiado Zrt. - Tập 33 - Trang 567-577 - 2021
Younas Rasheed Tantray, Mohammad Saleem Wani, Saroj Kumar Pradhan, Maroof Hamid, Ishrat Jan, Vijay Kumar Singhal, Raghbir Chand Gupta, Talaat H. Habeeb
Physochlaina praealta samples were studied macromorphologically and cytomorphologically along with their detailed phytochemical investigation. The concentration of phytoconstituents showed a strong positive correlation with the ploidy level and altitudinal gradients. The total phenol content was detected maximum in the methanolic extract of leaves and stem of higher altitudinal plants in both cyto...... hiện toàn bộ
Simultaneous determination of betulinic acid, β-sitosterol and lupeol in fruits, leaves, root and stem bark of Dillenia pentagyna Roxb. by a validated high-performance thin-layer chromatography method
Akademiai Kiado Zrt. - Tập 34 Số 6 - Trang 531-542 - 2021
Hari Om Saxena, S. S. Parihar, Ganesh Pawar
Quantitative analysis of flavonoids and phenolic acids in propolis by two-dimensional thin layer chromatography
Akademiai Kiado Zrt. - - 2004
Marica Medić-Šarič, Ivona Jasprica, Ana Mornar, Asja Smolčić-Bubalo, Petra Golja
Differences in the Efficiency of Separation of Analgesic Drugs by High-Performance Thin-Layer Chromatography with Similar Octadecyl Silica-Based Adsorbents
Akademiai Kiado Zrt. - - 2019
Michał Żmuda Trzebiatowski, Radosław Ł. Gwarda, Tadeusz H. Dzido
Development and validation of a high-performance thin-layer chromatography method for the simultaneous quantification of rosmarinic acid, quercetin, glycyrrhizin and betulinic acid in polyherbal immunostimulant formulation
Akademiai Kiado Zrt. - Tập 35 - Trang 571-577 - 2022
Reshma Jain, S. J. Rajput, Neeraj Kumar Sethiya, Sushil K. Chauddhary
Quantification of bioactive markers through modern analytical methods is very essential for establishing the authenticity and creditability of prescription and usage of herbal drugs formulations. In the present study, simultaneous quantification of rosmarinic acid (RA), quercetin (Q), glycyrrhizin (G) and betulinic acid (BA), in polyherbal formulation by high-performance thin-layer chromatography ...... hiện toàn bộ
Vitamins determination by TLC/HPTLC—a mini-review
Akademiai Kiado Zrt. - Tập 33 - Trang 429-437 - 2020
Qasim Ullah, Ali Mohammad
This review describes the application of thin-layer chromatography (TLC) and high-performance thin-layer chromatography (HPTLC) in the separation and identification of vitamins from their mixtures using different kinds of mobile phases such as isocratic and mixed solvents as well as mobile phases containing various modifiers. TLC has long been used for the separation and semiquantitative determina...... hiện toàn bộ
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