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Journal articles on the topic 'Preparative layer chromatography'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 January 2023

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1

Nyiredy, Szabolcs. "The Role of Planar Chromatography in Medicinal Plant Research." Journal of AOAC INTERNATIONAL 84, no. 4 (2001): 1219–31. http://dx.doi.org/10.1093/jaoac/84.4.1219.

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Abstract This paper summarizes the role of planar chromatography (PC) in medicinal and aromatic plant (MAP) research and development, and demonstrates the importance of the technique, after extraction, in the analysis of MAP (identification and quantitative determination of the separated compound/s), in the purification and isolation process, and in different types of screening procedure. Special attention is paid to analytical, micropreparative and preparative forced-flow techniques, for example overpressured-layer chromatography (OPLC) and rotation planar chromatography (RPC). The special fe

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2

Stránský, Karel, Marta Semerdžieva, Miroslav Otmar, et al. "Antifungal Antibiotic from the Mushroom Agrocybe aegerita (BRIG.) SING." Collection of Czechoslovak Chemical Communications 57, no. 3 (1992): 590–603. http://dx.doi.org/10.1135/cccc19920590.

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An extract from a submersed culture of the mushroom Agrocybe aegerita (BRIG.) SING., containing antifungal antibiotic compounds was chromatographed on a silica gel column. Compounds from fractions which displayed the highest biological activity were concentrated and isolated by means of preparative thin-layer chromatography and preparative high-performance liquid chromatography, and were further characterized by means of gas chromatography, mass spectrometry and nuclear magnetic resonance. They are sesquiterpenic diols predominantly with an illudine skeleton. Structural formulae are proposed f

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3

Sherma, Joseph. "Biennial Review of Planar Chromatography: 2013–2015." Journal of AOAC INTERNATIONAL 99, no. 2 (2016): 323–31. http://dx.doi.org/10.5740/jaoacint.15-0284.

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Abstract The most important advances in planar chromatography published between November 1, 2013 and November 1, 2015 are reviewed in this paper. Included are an introduction to the current status of the field; student experiments, books, and reviews; apparatus and techniques for sample preparation and TLC separations; detection and identification of separated zones; quantitative analysis; preparative layer chromatography; and thin layer radiochromatography. Selected applications are given in the various sections of the review.

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4

Sherma, Joseph. "Biennial Review of Planar Chromatography: 2015–2017." Journal of AOAC INTERNATIONAL 101, no. 4 (2018): 905–13. http://dx.doi.org/10.5740/jaoacint.17-0454.

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Abstract The most important advances in planar chromatography published between November 1, 2015, and November 1, 2017, are reviewed in this paper. Included are an introduction to the current status of the field; student experiments and reviews; apparatus and techniques for sample preparation and TLC separations; detection and identification of separated zones; quantitative analysis; preparative layer chromatography; and thin-layer radiochromatography. Selected applications are given in the various sections of the review.

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5

Ajeel, Zaineb H., and Maha N. Hamad. "Detection and isolation of flavonoid and aromatic acid from Cynara scolymus different parts cultivated in iraq." Iraqi Journal of Pharmaceutical Sciences ( P-ISSN 1683 - 3597 E-ISSN 2521 - 3512) 29, no. 2 (2020): 202–13. http://dx.doi.org/10.31351/vol29iss2pp202-213.

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The target of this study was to study the natural phytochemical components of the head (capsule) of Cynara scolymus cultivated in Iraq. The head (capsule) of plant was extracted by maceration in70% ethanol for 72 hours, and fractioned by hexane, chloroform and ethyl acetate. Preliminary qualitative phytochemical screening was performed on the ethyl acetate fraction for capsule was revealed the presence of flavonoid and aromatic acids. These were examined by (high -performance liquid chromatography) (HPLC diodarray), (high- performance thin-layer chromatography)(HPTLC). Flavonoids were isolated

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6

Schwack, Wolfgang. "Teresa Kowalska, Joseph Sherma (Eds.): Preparative Layer Chromatography." Analytical and Bioanalytical Chemistry 388, no. 5-6 (2007): 999–1000. http://dx.doi.org/10.1007/s00216-007-1328-6.

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7

Botz, L., Sz Nyiredy, and O. Sticher. "New Efficient Isolation Methods Using Preparative Layer Chromatography." Planta Medica 56, no. 06 (1990): 594. http://dx.doi.org/10.1055/s-2006-961204.

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8

Sherma, Joseph. "Biennial Review of Planar Chromatography: 2009–2011." Journal of AOAC INTERNATIONAL 95, no. 4 (2012): 992–1009. http://dx.doi.org/10.5740/jaoacint.sherma_review.

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Abstract The most important advances in the planar chromatography published between November 1, 2009 and November 1, 2011 are reviewed in this paper. Included are an introduction to the current status of the field; history, student experiments, books, and reviews; theory and fundamental studies; apparatus and techniques for sample preparation and TLC separations (sample application and plate development with the mobile phase); detection and identification of separated zones (chemical and biological detection, TLC/MS, and TLC coupled with other methods); techniques and instruments for quantitat

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9

Sherma, Joseph. "Biennial review of planar chromatography: 2011–2013." Open Chemistry 12, no. 4 (2014): 427–52. http://dx.doi.org/10.2478/s11532-013-0402-5.

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AbstractThe most important advances in planar chromatography published between November 1, 2011 and November 1, 2013 are reviewed in this paper. Included are an introduction to the current status of the field; student experiments, books, and reviews; theory and fundamental studies; apparatus and techniques for sample preparation and TLC separations (sample application and plate development with the mobile phase); detection and identification of separated zones (chemical and biological detection, TLC/mass spectrometry, and TLC coupled with other spectrometric methods); techniques and instrument

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10

Muhammad, Ilias, Volodymyr Samoylenko, Francis Machumi, et al. "Preparation and Application of Reversed Phase ChromatorotorTM for the Isolation of Natural Products by Centrifugal Preparative Chromatography." Natural Product Communications 8, no. 3 (2013): 1934578X1300800. http://dx.doi.org/10.1177/1934578x1300800308.

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A method of preparation of rotors with a reversed phase (RP) solid silica gel sorbent layer has been developed for centrifugal preparative chromatography (CPC), also known as rotational planar chromatography (RPC). The rotors consist of binder free RP solid SiO2 layers of different thicknesses packed between two supported circular glass discs and can be used in any appropriate device for centrifugal chromatography, like Chromatotron® and CycloGraph®. Polar and /or semi-polar compounds with close R f values, as well as extracts and column fractions were separated and /or purified in a preparati

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11

Kim, Yong J. "A Simple Streaking Device For Preparative Thin Layer Chromatography." Journal of Chemical Education 75, no. 5 (1998): 640. http://dx.doi.org/10.1021/ed075p640.1.

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12

Mincsovics, Emil, Márta Garami, László Kecskés, et al. "Personal Overpressured-Layer Chromatography (OPLC) Basic System 50, Flexible Tool in Analytical and Semipreparative Work." Journal of AOAC INTERNATIONAL 82, no. 3 (1999): 587–98. http://dx.doi.org/10.1093/jaoac/82.3.587.

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Abstract A new automated overpressured-layer chromatographic (OPLC) system called the Personal OPLC Basic System 50 is suitable for analytical and semi preparative separations. The automatic microprocessor-controlled system ensures rapid and reproducible off-line isocratic and stepwise gradientseparations. High external pressure (5 MPa) makes the sorbent layer more homogeneous, yielding more efficient off-line separation compared with those by early Chrompres chambers. A theoretical plate height of 10–30 μm can be achieved on an analytical high-performance thin-layer chromatographic (HPTLC) la

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13

Ghalib, Suroor A., and Enass J. Kadhim. "The Investigation of Some Phytochemical Compounds Found in Anchusa strigosa L. Grown Naturally in Iraq." Iraqi Journal of Pharmaceutical Sciences ( P-ISSN: 1683 - 3597 , E-ISSN : 2521 - 3512) 30, no. 1 (2021): 179–88. http://dx.doi.org/10.31351/vol30iss1pp179-188.

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Anchusa strigosa L.: Hardy annual biennial or perennial herb, with hairs especially on the leaves., flowers generally regular. Commonly named (Lisan Althour) in Iraq, from Boraginaceae family. The plant contains phenolic acids, flavonoids, alkaloids, sterols, and terpenoids. The Whole plant part defatted with n-hexane for 24 hours. The defatted plant material extracted using absolute methanol by Soxhlet apparatus for 24 hours, the extract fractionated by solvents of different polarity: petroleum ether- chloroform - ethylacetate- and n-butanol respectively. The n-butanol fraction hydrolyzed wit

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14

Mejbaum-Katzenellenbogen, W., F. Tłuścik, A. Kozubek, and A. Sikorski. "Alkylresorcinols in rye (Secale cereale L.) grains. I. Micromethod for determination of alkyl derivatives of resorcinol in rye grain." Acta Societatis Botanicorum Poloniae 44, no. 4 (2015): 479–89. http://dx.doi.org/10.5586/asbp.1975.044.

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A pure preparation of alkylresorcinol from rye grains was obtained by preparative thin-layer chromatography, which gave a UV spectrum characteristic for 5-n-alkylresorcinols and orcinol. This preparation served as standard in the elaboration of a micro method (for alkylresorcinols determination in acetone extract from rye grain. It was found that this method is suitable for selective determination of 5-n-alkylrezorcinols in acetone extracts from rye grains.

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15

SUGIYAMA, TAKEYOSHI. "Rapid development methods of preparative large thin-layer chromatography (TLC)." Kagaku To Seibutsu 28, no. 1 (1990): 59–61. http://dx.doi.org/10.1271/kagakutoseibutsu1962.28.59.

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16

Moschidis, Michael C. "Notizen: Isolation of Beef Brain Phosphonolipids by Thin Layer Chromatography: Their Identification and Silicic Acid Column Chromatographic Separation." Zeitschrift für Naturforschung C 41, no. 3 (1986): 369–74. http://dx.doi.org/10.1515/znc-1986-0323.

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The isolation and identification of the phosphonolipids from beef brain - right lobe, left lobe and cerebellum - is herein reported. The phosphonolipids were isolated by preparative thin layer chromatography (TLC) using the solvent system methanol/water (2:1, v/v) and identified preliminarily by TLC. The isolated phosphonolipids were subjected to silicic acid column chromatographic separation and the thus separated phosphonolipids were identified by TLC, nitrogen-phosphorus determinations and IR spectroscopy.

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17

Móricz, Ágnes M., Péter G. Ott, Ágnes Alberti, et al. "Applicability of Preparative Overpressured Layer Chromatography and Direct Bioautography in Search of Antibacterial Chamomile Compounds." Journal of AOAC INTERNATIONAL 96, no. 6 (2013): 1214–21. http://dx.doi.org/10.5740/jaoacint.sgemoricz.

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Abstract In situ sample preparation and preparative overpressured layer chromatography (OPLC) fractionation on a 0.5 mm thick adsorbent layer of chamomile flower methanol extract prepurified by conventional gravitation accelerated column chromatography were applied in searching for bioactive components. Sample cleanup in situ on the adsorbent layer subsequent to sample application was performed using mobile phase flow in the opposite direction (the input and output of the eluent was exchanged). The antibacterial effect of the fractions obtained from the stepwise gradient OPLC separation with t

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18

Purwanti, Sri, Wulan Tri Wahyuni, and Irmanida Batubara. "Antioxidant Activity of Daemonorops draco Resin." Jurnal Kimia Sains dan Aplikasi 22, no. 5 (2019): 179–83. http://dx.doi.org/10.14710/jksa.22.5.179-183.

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Jernang resin is secretion of jernang rattan (Daemonorops draco, Arecaceae family) fruits which is endemic in Southeast Asia. This resin has various biological activities and empirically used as wound healing, headache medicines, and fever remedies by Anak Dalam ethnic group from Jambi. This study was performed to evaluate the antioxidant activity of nonpolar fraction of D. draco resin which collected from Jambi Province, Sumatera, Indonesia. Resin was extracted with n-hexane, ethyl acetate, and methanol respectively. The antioxidant properties of the extracts were then evaluated using 1,1-dip

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19

Nugroho, Titania Tjandrawati, Krisna Puja, Yum Eryanti, and Miranti Miranti. "Fractionation of Garcinia Mangostana Fruit Pericarp Cellulase Assisted Extracts by Preparative Thin Layer Chromatography and High Performance Liquid Chromatography." Jurnal Natur Indonesia 18, no. 1 (2020): 31. http://dx.doi.org/10.31258/jnat.18.1.31-42.

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The polar extract of Mangosteen (Garcinia mangostana) fruit pericarp obtained by cellulase assisted ethanol extraction has strong antioxidant activity, giving an average 2,2 diphenyl-1 pykrylhydrazyl (DPPH) radical scavenging IC50 of 13.9 µg/mL. In order to elucidate the chemical component from this extract that is responsible for the high antioxidant activity, fractionation of the extract should firstly be performed. In this paper we show results of preparative fractionation of the polar extract by two methods, namely preparative Thin Layer Chromatography (PTLC) and preparative High Performan

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20

Wünsche, L., U. Keller, and I. Flament. "Combination of supercritical fluid chromatography with thin-layer chromatography on a semi-preparative scale." Journal of Chromatography A 552 (August 1991): 539–49. http://dx.doi.org/10.1016/s0021-9673(01)95970-9.

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21

Afrianto, Andika Wahyu, and Kanda Panthong. "Flavonoid Compound from Dichloromethane Extract of Crinum amabile Donn Leaves." Kaunia: Integration and Interconnection Islam and Science Journal 18, no. 1 (2022): 17–23. http://dx.doi.org/10.14421/kaunia.3399.

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Flavonoid compound was isolated from Crinum amabile Donn. leaves. The separation of flavonoids was carried out by using chromatographic techniques to purify CH2Cl2 extract of Crinum amabile Donn. leaves. Column chromatography with silica gel and sephadex as stationary phases, thin-layer chromatography, and preparative thin-layer chromatography were the chromatographic techniques used in this research. The pure compound obtained in the form of white-yellow solid with the Rf value is 0.44. Compound identification using 1H-NMR spectrometer showed the presence of protons from the CH=CH ortho with

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22

J. Khadim, Enas, Alaa A. Abdulrasool, and Zainab J. Awad. "Phytochemical Investigation of Alkaloids in the Iraqi Echinops heterophyllus (Compositae)." Iraqi Journal of Pharmaceutical Sciences ( P-ISSN 1683 - 3597 E-ISSN 2521 - 3512) 23, no. 1 (2017): 26–34. http://dx.doi.org/10.31351/vol23iss1pp26-34.

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Alkaloids are a group of naturally occurring chemical compounds that contain mostly basic nitrogen atoms . They are a large family of compounds synthesized by plants in addition to the bacteria, fungi, and animals, they often have pharmacological effects. The aim of this study is to isolate and identified alkaloids in a newly studied, wild Iraqi plant named Echinops heterophyllus. The medicinal importance of alkaloids, on one hand and the absence of any phytochemical investigation on heterophyllus species of echinops genus on the other hand , acquired this study its importance. Three alkaloids

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23

Nyiredy, Sz, C. A. J. Erdelmeier, and O. Sticher. "Preparative separation of bipyridyl isomers using sequential centrifugal layer chromatography (SCLC)." Fresenius' Zeitschrift für analytische Chemie 321, no. 6 (1985): 556–58. http://dx.doi.org/10.1007/bf00464364.

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24

Lin, Bingchang, Tong Yun, Guoming Zhong, and Georges Guiochon. "Shock layer analysis for a single-component in preparative elution chromatography." Journal of Chromatography A 708, no. 1 (1995): 1–12. http://dx.doi.org/10.1016/0021-9673(95)00380-6.

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25

Tsydendambaev, V. D., V. P. Pchelkin, and A. G. Vereshchagin. "Preparative flow thin-layer chromatography of biomembrane higher fatty acid diglycerides." Pharmaceutical Chemistry Journal 42, no. 4 (2008): 228–31. http://dx.doi.org/10.1007/s11094-008-0087-9.

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26

Cherviakova, L., T. Panchenko, and O. Borzykh. "Analytical control of active substances of the class of imidazolinones in herbicide formulations." Karantin i zahist roslin, no. 1 (March 10, 2021): 15–18. http://dx.doi.org/10.36495/2312-0614.2021.1.15-18.

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Goal. The choice of a chromatographic method and the development of a method for the analytical determination of imazethapyr, imazamox, imazapyr in herbicide preparative forms in the joint presence. Methods. Active substances were analyzed by thin layer chromatography. The linear range of the dependence of the area of chromatographic zones on the amount of active substance was assessed by a mathematical-statistical method. Results. Determination of pesticides by thin-layer chromatography includes the main stages: classification of pesticides by polarity; extraction of active substa

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27

Nigussie, Gashaw. "Isolation and Characterization of the Roots of Rumex nervosus." Journal of Tropical Pharmacy and Chemistry 5, no. 1 (2020): 39–50. http://dx.doi.org/10.25026/jtpc.v5i1.241.

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Rumex nervosus belongs to the family of Polygonaceae,which is traditionally used in Ethiopia to treat various diseases. This prompted us to isolate bioactive compounds from the root of this plant. Ground root parts of Rumex nervosus were subjected to exhaustive extraction successively with petroleum ether and methanol.The solvent from each extract was evaporated under reduced pressure using rotavapour to obtain petroleum ether and methanol extract. Chromatographic purification of the methanol extracts by Column chromatography followed by Preparative Thin layer Chromatography using Chloroform:

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28

Gowtham M, Asharani I V, and Paridhavi M. "Isolation and characterization of components from roots of Premna latifolia Roxb." International Journal of Research in Pharmaceutical Sciences 10, no. 3 (2019): 2259–64. http://dx.doi.org/10.26452/ijrps.v10i3.1463.

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The aim of the current work was to isolate and characterize structurally fascinating and biologically intriguing compounds from the dried roots of Premna latifolia. Dried plant roots were subjected to soxhalation with ethyl alcohol and later to column chromatography. The individual compounds were isolated by preparative thin-layer chromatography followed by structural characterization using various spectral ways like LCMS, IR, 1D-NMR and 2D-NMR (1H-1H NMR and 1H-13C NMR). Three totally different compounds were isolated and characterised as Compound 1: n-Tridecanyl n-Tetracosanoate, Compound 2:

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29

Padmathilake, K. G. E., H. M. S. K. H. Bandara, M. Mallique Qader, et al. "Talarofuranone, a New Talaroconvolutin Analog from the Endophytic Fungus Talaromyces purpurogenus from Pouteria campechiana Seeds." Natural Product Communications 12, no. 4 (2017): 1934578X1701200. http://dx.doi.org/10.1177/1934578x1701200406.

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An endophytic fungus Talaromyces purpurogenus was isolated from the seeds of the popular edible fruit Pouteria campechiana. The fungus was fermented in potato dextrose agar and the fungal media were extracted with EtOAc. Chromatographic separation of the EtOAc extracts over silica gel, Sephadex LH-20 and preparative thin layer chromatography furnished a furanone analogue of talaroconvolutin A, named talarofuranone (1), along with talaroconvolutin A (2), 4-hydroxyacetophenone, tyrosol and ergosterol. The structure of 1 was determined by comparing the NMR data with that of 2 and by HRFABMS.

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Rouillon, R., G. Gay, J. Bernillon, J. Favre-Bonvin, and G. Bruchet. "Analysis by HPLC – mass spectrometry of the indole compounds released by the ectomycorrhizal fungus Hebeloma hiemale in pure culture." Canadian Journal of Botany 64, no. 9 (1986): 1893–97. http://dx.doi.org/10.1139/b86-252.

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Indole compounds released by Hebeloma hiemale Bres. in pure culture were studied by cultivating the fungus on a nutrient solution supplemented or not with 1 mM tryptophan. Analytical thin-layer chromatography revealed numerous indole compounds in 7-week-old culture filtrates obtained in the presence of tryptophan. Such compounds were isolated by preparative thin-layer chromatography and purified by high performance liquid chromatography. The most abundant of them, i.e., indolyl-3-acetic acid, indolyl-3-carboxylic acid, and indole-3-aldehyde, were identified by mass spectrometry. Indole-3-aldeh

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31

Farid, Yunahara, and Iswahyun Iswahyun. "ISOLATION, IDENTIFICATION, AND ANTIOXIDANT ACTIVITY OF CHEMICAL COMPOUND IN ETHANOL EXTRACT OF PAPAYA LEAVES (CARICA PAPAYA L.)." Asian Journal of Pharmaceutical and Clinical Research 11, no. 13 (2018): 118. http://dx.doi.org/10.22159/ajpcr.2018.v11s1.26583.

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Objective: The purpose of this research was to isolate and identify the active antioxidant compound in ethanol extract of papaya leaves (Carica papaya L.).Methods: The methods used were fractionation using vacuum liquid chromatography (VLC), and the active fraction was purified using column chromatography (CC). The pure isolate was obtained with preparative thin-layer chromatographic (TLC) identified by spectroscopy. Its antioxidant activity was evaluated using 2,2-diphenyl-picryl-hydrazyl. The presence of phenols was analyzed using ultraviolet (UV)-visible, Fourier-transform infrared (FTIR),

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Bahrami, S., H. Gasser, and H. Redl. "A preparative high performance liquid chromatography method for separation of lecithin: comparison to thin-layer chromatography." Journal of Lipid Research 28, no. 5 (1987): 596–98. http://dx.doi.org/10.1016/s0022-2275(20)38685-5.

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Skalska, Agnieszka, Anna Matysik, Marek Gerkowicz, and Magdalena Wójciak-Kosior. "Preparative reversed-phase high-performance thin-layer chromatography for analysis of anthocyanins." Journal of Planar Chromatography – Modern TLC 19, no. 112 (2006): 463–66. http://dx.doi.org/10.1556/jpc.19.2006.6.10.

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Rabel, Fred, and Joseph Sherma. "Review of the state of the art of preparative thin-layer chromatography." Journal of Liquid Chromatography & Related Technologies 40, no. 4 (2017): 165–76. http://dx.doi.org/10.1080/10826076.2017.1294081.

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Lee, Y. W., and C. E. Cook. "Preparative Separation of Demeton Isomers with Ito Multi-Layer Coil Countercurrent Chromatography." Journal of Liquid Chromatography 8, no. 12 (1985): 2253–58. http://dx.doi.org/10.1080/01483918508074129.

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Matysik, G., E. Soczewiński, and B. Polak. "Improvement of separation in zonal preparative thin-layer chromatography by gradient elution." Chromatographia 39, no. 7-8 (1994): 497–504. http://dx.doi.org/10.1007/bf02278768.

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Läufer, Konrad, Jochen Lehmann, Stefan Petry, Markus Scheuring, and Markus Schmidt-Schuchardt. "Simple, inexpensive system for using thin-layer chromatography for micro-preparative purposes." Journal of Chromatography A 684, no. 2 (1994): 370–73. http://dx.doi.org/10.1016/0021-9673(94)00571-0.

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Obaid, Noor S., and Widad M. Al-Ani. "Phytochemical Study of Iraqi Cydonia oblonga Miller Fruit." INTERNATIONAL JOURNAL OF DRUG DELIVERY TECHNOLOGY 12, no. 03 (2022): 1256–60. http://dx.doi.org/10.25258/ijddt.12.3.54.

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Quince (Cydonia oblonga) fruit has a lot of phytochemicals that draw the attention of many researchers nowadays for its important medicinal values. This study concerns the identification and isolation of two flavonoids (Astragalin) flavonol glycoside and (Isorhamnetin) from fruit ethyl acetate extract of Iraqi cultivated Cydonia oblonga. The identification was carried out by thin layer chromatography (TLC) and high performance liquid chromatography (HPLC) analysis techniques. The yield of isolated compound was (1.6 and 1.3 %) for astragalin and isorhamnetin, respectively. This was achieved by

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Megawati, Megawati, Akhmad Darmawan, and Sofa Fajriah. "Cytotoxic Activity of Flavonoid Compounds Isolated from Tetrameles Nudliflora Leaves." ANNALES BOGORIENSES 23, no. 2 (2020): 81. http://dx.doi.org/10.14203/ann.bogor.2019.v23.n2.81-86.

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Tetrameles nudliflora is one of the endemic plants in Wallace region, especially in Mekongga Forest, Southeast Sulawesi, Indonesia. As part of our project in the field of natural drug discovery based on local bioresources, this study aimed to isolate secondary metabolite compounds from the ethyl acetate fractions of the leaves of T. nudiflora and evaluate their cytotoxic activities against breast carcinoma cancer lines, MCF-7. The methods used were various chromatography techniques such as vacuum column chromatography, gravitation column chromatography, thin layer chromatography, preparative t

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40

Jalmakhanbetova, R. I., Ye M. Suleimen, N. Abe, et al. "Isolation and in silico SARS-CoV-2 main protease inhibition potential of chrysoeriol from Chondrilla brevirostris Fisch. & C.A. Mey." Bulletin of the Karaganda University. "Chemistry" series 105, no. 1 (2022): 78–85. http://dx.doi.org/10.31489/2022ch1/78-85.

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The genus Chondrilla L. comprises 22 species on the CIS territory. 16 species of them grow in Kazakhstan. All species of the genus Chondrilla L. are rubber-bearing herbaceous plants that belong to the Asteraceae family. We picked Chondrilla brevirostris Fisch. & C.A. Mey. for the chemical study. It is a perennial herb that grows in desert steppes and forest meadows. The aboveground parts of Ch. brevirostris were extracted with ethanol at room temperature. Several fractions were obtained by separating ethanol extract on column chromatography. Rechromatography and preparative thin-layer chro

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Nurhayati, Awik Puji Dyah, Rarastoeti Pratiwi, Subagus Wahyuono, and Istriyati . "PROLIFERATION INHIBITORY ACTIVITY OF THE ACTIVE FRACTION MARINE SPONGE Cinachyrella sp. AGAINST CELL LINE T47D." KnE Life Sciences 2, no. 1 (2015): 663. http://dx.doi.org/10.18502/kls.v2i1.243.

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<p>Marine sponges Cinachyrella sp. (Family:Tetillidae) in Kukup beach, Kemadang Village, Tanjungsari District, Gunung Kidul, DIY were producing diversity secondary metabolites such as polyketides, alkaloids, peptide and terpene. The purpose of this study was investigated proliferation inhibitory activity of active fraction Cinachyrella sp. against cell line T47D. Sponges samples were collected manually from rocky substrate at depth 0.5 m. The sponges was minced and extracted with 95% ethanol. The ethanol extract was partitioned sequentially with ethyl acetate. The extract ethyl acetate w

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Kwiatkowska, Magdalena, Alicja Wzorek, Anna Kolbus, et al. "Flurbiprofen: A Study of the Behavior of the Scalemate by Chromatography, Sublimation, and NMR." Symmetry 13, no. 4 (2021): 543. http://dx.doi.org/10.3390/sym13040543.

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2-(2-Fluoro-4-biphenyl) propionic acid (flurbiprofen), from the phenylalkanoic acid family of nonsteroidal anti-inflammatory drugs (NSAID’s), is currently on the pharmaceutical market as a racemate. This racemic compound was tested for its propensity to undergo the self-disproportionation of enantiomers (SDE) phenomenon by various forms of chromatography (SDEvC), such as routine gravity-driven column chromatography, medium-pressure liquid chromatography (MPLC), preparative thin-layer chromatography (PTLC), and size-exclusion chromatography (SEC), as well as by sublimation (SDEvS). Furthermore,

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Elisa, Gebby, Marline Nainggolan, and Ginda Haro. "Skrining Fitokimia dan Isolasi Senyawa Triterpenoid/Steroid dari Daun Buni (Antidesma Bunius (L.) Spreng.)." Talenta Conference Series: Tropical Medicine (TM) 1, no. 1 (2018): 271–76. http://dx.doi.org/10.32734/tm.v1i1.78.

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Salah satu tumbuhan yang digunakan dalam pengobatan secara tradisional adalah buni (Antidesma bunius (L.) Spreng.), yang dapat mengobati darah tinggi, jantung berdebar cepat, anemia, sifilis, antikanker, antiradikal dan sebagai bahan pewarna alami. Daun buni mengandung sejumlah triterpenoid/steroid, saponin dan flavonoid. Senyawa triterpenoid/steroid menunjukkan aktivitas farmakologi berupa antibakteri, antiinflamasi, inhibisi terhadap sintesis kolesterol, antikanker, antitumor dan aktivitas sitotoksik terhadap sel pangkreatik.Tujuan penelitian ini untuk melakukan skrining fitokimia dan mengis

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Moschidis, Michael C. "Thin Layer Chromatographic and Infra Red Spectral Evidence for the Presence of Phosphonolipids in Cicada oni." Zeitschrift für Naturforschung C 42, no. 9-10 (1987): 1023–26. http://dx.doi.org/10.1515/znc-1987-9-1002.

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Abstract The phosphonolipids from whole Cicada oni have been isolated by preparative thin-layer chromatography (TLC) in methanol-water (2:1, v/v) and have been identified by TLC, infra-red spectroscopy, phosphono phosphorus determinations and elemental microanalyses. The presence has been confirmed of the phosphono analogues of phosphatidyl choline, phosphatidyl ethanolamine, sphingomyelin and of ceramide aminoethyl phosphonate.

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Kwok, David W. K., Gopalakrishna Pillai, Radana Vaughan, James E. Axelson, and Keith M. McErlane. "Preparative High-Performance Liquid Chromatography and Preparative Thin-Layer Chromatography Isolation of Tocainide Carbamoyl-Glucuronide: Structural Characterization by Gas Chromatography-Mass Spectrometry and Fast Atom Bombardment-Mass Spectrometry." Journal of Pharmaceutical Sciences 79, no. 10 (1990): 857–61. http://dx.doi.org/10.1002/jps.2600791002.

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Waksmundzka-Hajnos, Monika, Maria Gadzikowska, and Michał Hajnos. "Strategy for preparative separation of quaternary alkaloids fromChelidonium majusL. by thin-layer chromatography." Journal of Planar Chromatography – Modern TLC 15, no. 4 (2002): 289–93. http://dx.doi.org/10.1556/jpc.15.2002.4.9.

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Maître, Jean-Michel, Gilles Boss, Bernard Testa, and Kurt Hostettmann. "Preparative separation of diastereoisomeric 2-arylpropionic acid derivatives by centrifugal thin-layer chromatography." Journal of Chromatography A 356 (January 1986): 341–45. http://dx.doi.org/10.1016/s0021-9673(00)91496-1.

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Snini, A., A. Fahimi, Z. Mouloungui, M. Delmas, and A. Gaset. "Separation and preparative isolation of phenolic dialdehydes by on-line overpressured layer chromatography." Journal of Chromatography A 590, no. 2 (1992): 369–72. http://dx.doi.org/10.1016/0021-9673(92)85401-e.

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Jindrich, Jindrich, Josef Pitha, and Bengt Lindberg. "Separation of cyclodextrins and their derivatives by thin-layer and preparative column chromatography." Carbohydrate Research 275, no. 1 (1995): 1–7. http://dx.doi.org/10.1016/0008-6215(95)00071-z.

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Nguyen, Tuong Van, and Vinh Dinh. "Isolation of Kaempferol from Vietnamese Ginkgo biloba Leaves by Preparative Column Chromatography." Asian Journal of Chemistry 32, no. 3 (2020): 515–18. http://dx.doi.org/10.14233/ajchem.2020.22241.

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The aim of this research was to develop a simple procedure to isolate kaempferol from Ginkgo biloba leaves extract. Flavonoids present in Ginkgo biloba leaves were extracted by 96 % ethanol. These flavonol glycosides which were hydrolyzed in the presence of HCl to convert to aglycones. The flavonol aglycones were extracted by the hydrolysis of solution with ethyl acetate which was evaporated to dryness under reduced pressure to obtain concentrated flavonol aglycones (C2). Flavonol aglycones were then purified by preparative column chromatography with a mobile phase composed of petroleum ether-

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