Academic literature on the topic 'Lyotropic liquid crystalline phases'

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Journal articles on the topic "Lyotropic liquid crystalline phases"

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Wang, Luyan, Xiao Chen, Yongcun Chai, et al. "Lyotropic liquid crystalline phases formed in an ionic liquid." Chemical Communications, no. 24 (2004): 2840. http://dx.doi.org/10.1039/b411163j.

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Attard, G. S. "Mesoporous Platinum Films from Lyotropic Liquid Crystalline Phases." Science 278, no. 5339 (1997): 838–40. http://dx.doi.org/10.1126/science.278.5339.838.

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Kipkemboi, Pius, Ali Khan, Björn Lindman, and Viveka Alfredsson. "Phase behaviour and structure of amphiphilic poly(ethylene oxide)-poly(propylene oxide) triblock copolymers ((EO)4(PO)59(EO)4 and (EO)17(PO)59(EO)17) in ternary mixtures with water and xylene." Canadian Journal of Chemistry 81, no. 8 (2003): 897–908. http://dx.doi.org/10.1139/v03-102.

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The isothermal ternary phase behaviour and structure of amphiphilic copolymer–water–xylene systems was investigated for two poly(ethylene oxide)–poly(propylene oxide) (PEO–PPO) triblock copolymers, (EO)4(PO)59(EO)4 and (EO)17(PO)59(EO)17, at 25°C. The phase boundaries were identified using 2H NMR and inspection under polarized light. The microstructure and structural length scales in the lyotropic liquid crystalline phases were determined and characterized by small-angle X-ray scattering. The amounts and relative proportions of the selective solvents can modulate the resulting microstructures,
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Jia, Lin, and Min-Hui Li. "Liquid crystalline polymer vesicles: thermotropic phases in lyotropic structures." Liquid Crystals 41, no. 3 (2013): 368–84. http://dx.doi.org/10.1080/02678292.2013.827753.

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Pampel, André, Erik Strandberg, Göran Lindblom, and Frank Volke. "High-resolution NMR on cubic lyotropic liquid crystalline phases." Chemical Physics Letters 287, no. 3-4 (1998): 468–74. http://dx.doi.org/10.1016/s0009-2614(98)00169-9.

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Jung, M., A. L. German, and H. R. Fischer. "Polymerisation in lyotropic liquid-crystalline phases of dioctadecyldimethylammonium bromide." Colloid & Polymer Science 279, no. 2 (2001): 105–13. http://dx.doi.org/10.1007/s003960000382.

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Gao, Hongfei, Huifang Cheng, Qijing Liu, et al. "Tolane-based bent bolaamphiphiles forming liquid crystalline hexagonal honeycombs with trigonal symmetry." New Journal of Chemistry 39, no. 3 (2015): 2060–66. http://dx.doi.org/10.1039/c4nj01855a.

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Song, Ji-Yoon, Hui-Ju Kang, Jong Chan Won, Yun Ho Kim, Young-Si Jun, and Hyeon Su Jeong. "The true liquid crystal phases of 2D polymeric carbon nitride and macroscopic assembled fibers." Materials Horizons 6, no. 8 (2019): 1726–32. http://dx.doi.org/10.1039/c9mh00238c.

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We report that controlled graphitic carbon nitride (g-CN) which has high aspect ratio and expanded interlayer spacing can exhibit lyotropic liquid crystalline (LC) phase in concentrated sulfuric acid. By utilizing its LC phase, a g-CN fiber for the first time was successfully fabricated.
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Akpinar, Erol, and Antônio Figueiredo Neto. "Experimental Conditions for the Stabilization of the Lyotropic Biaxial Nematic Mesophase." Crystals 9, no. 3 (2019): 158. http://dx.doi.org/10.3390/cryst9030158.

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Nematic phases are some of the most common phases among the lyotropic liquid crystalline structures. They have been widely investigated during last decades. In early studies, two uniaxial nematic phases (discotic, ND, and calamitic, NC) were identified. After the discovery of the third one, named biaxial nematic phase (NB) in 1980, however, some controversies in the stability of biaxial nematic phases began and still continue in the literature. From the theoretical point of view, the existence of a biaxial nematic phase is well established. This review aims to bring information about the histo
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Wu, Jiapei, Jin Zhang, Liqiang Zheng, Xueyan Zhao, Na Li, and Bin Dong. "Characterization of lyotropic liquid crystalline phases formed in imidazolium based ionic liquids." Colloids and Surfaces A: Physicochemical and Engineering Aspects 336, no. 1-3 (2009): 18–22. http://dx.doi.org/10.1016/j.colsurfa.2008.11.011.

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Dissertations / Theses on the topic "Lyotropic liquid crystalline phases"

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Robins, John Peter. "Inverse micellar lyotropic liquid-crystalline cubic phases." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313297.

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Orädd, Greger. "NMR diffusion studies on lyotropic liquid crystalline systems." Doctoral thesis, Umeå universitet, Kemiska institutionen, 1994. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-101297.

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The pulsed field gradient fourier transform nuclear magnetic resonance (PFG-FTNMR) method to measure translational diffusion coefficients in multicomponent systems has been applied to amphiphilic molecules forming liquid crystalline phases. By analyzing the concentration dependence of the diffusion coefficients of water and amphiphile in a micellar system of N,N-dimethyldodecy lamine oxide (DDAO) in water it was possible to conclude that the micelles formed were polydisperse in size and shape. It was also shown that solubilization of small amounts of hydrophobic molecules into the micelles ind
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Tang, Tsing-Young Dora. "Structural parameters and dynamics of lyotropic liquid crystalline phases in hydrated monolinolein." Thesis, Imperial College London, 2010. http://hdl.handle.net/10044/1/5880.

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To date, the stability of inverse bicontinuous cubic phases and the mechanism of lamellar to cubic transitions are poorly understood due to limited experimental resolution and reproducibility. Systematic experimental data is imperative for reasonable testing and verification of established theoretical models in this area. This thesis focuses on two aspects of lyotropic phase behaviour; the equilibrium behaviour of lyotropic liquid crystalline phases and the transitions between the equilibrium states. When monolinolein (ML) is mixed with water it forms a variety of inverse lyotropic phases, for
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Hatchman, Kevan. "Kinetic studies of phase transitions in lyotropic liquid crystalline systems." Thesis, University of Salford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334370.

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Duesing, Peter Michael. "Effects of pressure on lyotropic liquid-crystalline phase behaviour and structure." Thesis, Imperial College London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294919.

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Thorson, Todd James. "Phase behavior and stimuli response in lyotropic liquid crystalline templated photopolymers." Thesis, University of Iowa, 2013. https://ir.uiowa.edu/etd/2646.

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Zhou, Ming. "Synthesis, Phase Transition, Morphology, and Rheology of Combined Main−Chain and Side−Chain Liquid−Crystalline Polymers in Both Thermotropic and Lyotropic States." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1143515132.

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Knight, P. "Temperature jump studies of lyotropic liquid crystals." Thesis, University of Salford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234784.

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Green, Nathan Kemp. "Photocurable systems based on lyotropic liquid-crystalline derivatives of cellulose." Thesis, Heriot-Watt University, 1999. http://hdl.handle.net/10399/611.

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Zanchetta, G. "Liquid crystalline phases in oligonucleotide solutions." Doctoral thesis, Università degli Studi di Milano, 2007. http://hdl.handle.net/2434/248507.

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In this thesis, we investigate the behavior of short complementary B-form DNA oligomers, 6 to 20 base pairs in length, exhibiting chiral nematic and columnar liquid crystal phases, even though such duplexes lack the shape anisotropy required for liquid crystal ordering. Structural characterization reveals that these phases are produced by the end-to-end stacking of the duplex oligomers into polydisperse anisotropic rod-shaped aggregates, which can order into liquid crystals. By use of polarized optical microscopy, X-ray micro-di raction and optical interferometry, we determine the phase diagra
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Books on the topic "Lyotropic liquid crystalline phases"

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Hatchman, Kevan. Kinetic studies of phase transitions in lyotropic liquid crystalline systems. University of Salford, 1992.

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Longa, Lech. Models of high-temperature liquid crystalline phases and of the related phase transitions¹. Instytut Fizyki Jądrowej, 1989.

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Findon, Alison. Fréedericksz transition studies of the smectic A and smectic C liquid crystalline phases. University of Manchester, 1995.

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Aveyard, Bob. Surfactants. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198828600.001.0001.

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Characteristically, surfactants in aqueous solution adsorb at interfaces and form aggregates (micelles of various shapes and sizes, microemulsion droplets, and lyotropic liquid crystalline phases). This book is about the behaviour of surfactants in solution, at interfaces, and in colloidal dispersions. Adsorption at liquid/fluid and solid/liquid interfaces, and ways of characterizing the adsorbed surfactant films, are explained. Surfactant aggregation in systems containing only an aqueous phase and in systems with comparable volumes of water and nonpolar oil are each considered. In the latter
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Dierking, Ingo, and Antônio Martins Figueiredo Neto. Lyotropic Liquid Crystals. Oxford University PressOxford, 2024. http://dx.doi.org/10.1093/9780191924927.001.0001.

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Abstract This book on Lyotropic Liquid Crystals covers the current state of the art of materials forming liquid crystals as a function of concentration in an isotropic solvent. After a short introduction to liquid crystals in general, we discuss the basic aspects of phase transitions, Onsager’s theory, and the Landau–de Gennes approach. Phase diagrams are introduced, together with a range of experimental techniques to determine the latter, such as polarizing microscopy, calorimetry, X-ray diffraction, and neutron scattering. Computer simulation approaches are discussed to demonstrate current p
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Book chapters on the topic "Lyotropic liquid crystalline phases"

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Findenegg, Gerhard H., Christian Braun, Peter Lang, and Roland Steitz. "Interfacial Effects of Dilute Solutions and Lyotropic Liquid Crystalline Phases of Nonionic Surfactants." In ACS Symposium Series. American Chemical Society, 1999. http://dx.doi.org/10.1021/bk-1999-0736.ch002.

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Lydon, John E. "Introduction to Liquid Crystalline Phases." In Liquid Crystalline Semiconductors. Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-90-481-2873-0_1.

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Hartley, Patrick G., and Hsin-Hui Shen. "Nanocharacterization of Lyotropic Liquid Crystalline Systems." In Self-Assembled Supramolecular Architectures. John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118336632.ch4.

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Okoshi, Kento. "Smectic Phases of Liquid Crystalline Rod-Like Helical Polymers." In Liquid Crystalline Polymers. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-22894-5_17.

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Amar-Yuli, Idit, Abraham Aserin, and Nissim Garti. "Some Characteristics of Lyotropic Liquid-Crystalline Mesophases." In Self-Organized Surfactant Structures. Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527632633.ch4.

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Malucelli, Giulio. "UV-Cured Networks Containing Liquid Crystalline Phases: State of the Art and Perspectives." In Liquid Crystalline Polymers. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20270-9_8.

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Ciferri, A. "Spinning from Lyotropic and Thermotropic Liquid Crystalline Systems." In Developments in Oriented Polymers—2. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3427-6_3.

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Vertogen, Ger, and Wim H. de Jeu. "Landau Theory of Liquid Crystalline Phases." In Springer Series in Chemical Physics. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-83133-1_12.

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Charvolin, J., and Y. Hendrikx. "Amphiphilic Molecules in Lyotropic Liquid Crystals and Micellar Phases." In Nuclear Magnetic Resonance of Liquid Crystals. Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-6517-1_20.

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Pampel, André, and Frank Volke. "Studying Lyotropic Crystalline Phases Using High-Resolution MAS NMR Spectroscopy." In Molecules in Interaction with Surfaces and Interfaces. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-40024-0_12.

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Conference papers on the topic "Lyotropic liquid crystalline phases"

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Tran, Nhiem. "Controlling lyotropic liquid crystalline self-assembly for creating nano carriers for biomedical applications." In JSAP-Optica Joint Symposia. Optica Publishing Group, 2024. https://doi.org/10.1364/jsapo.2024.16p_b4_2.

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Lipid nanoparticles (LNP) have been widely used as carriers for drugs and genes, including in mRNA-vaccines for COVD-19. A special class of LNP, lyotropic liquid crystalline LNP, comprise mainly of amphiphilic lipids self-assembling into two- and three-dimensional, inverse hexagonal, and cubic nanostructures (Fig. 1). Mesophase structures of self-assembled lyotropic liquid crystalline nanoparticles are important factors that directly influence their ability to encapsulate and release drugs and their biological activities.1, 2 For example, the release rate of hydrophilic compounds was found to
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Anderko, A., P. Wang, R. D. Springer, M. M. Lencka, and J. J. Kosinski. "Prediction of Mineral Scaling in Oil and Gas Production Using a Comprehensive Thermodynamic Model." In CORROSION 2010. NACE International, 2010. https://doi.org/10.5006/c2010-10129.

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Abstract A comprehensive methodology has been developed for predicting mineral scaling in oil and gas production environments. The methodology is based on a previously developed model for mixed-solvent electrolyte systems (MSE). The model relies on a detailed treatment of speciation in the liquid phase. It represents the standard-state properties of individual species using the Helgeson-Kirkham-Flowers equation of state and it predicts the species' activity coefficients on the basis of contributions that reflect long-range electrostatic, short-range ionic, and non-ionic interactions. The model
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Starzonek, Szymon, Sylwester J. Rzoska, and Aleš Iglič. "Dielectric Study of Induced Phase Transitions in Lyotropic Liquid Crystals." In Socratic Lectures 8. University of Lubljana Press, 2023. http://dx.doi.org/10.55295/psl.2023.ii13.

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Lyotropic liquid crystals are multicomponent systems of fundamental importance. They can also construct model structures for biological systems. The richness of their phases allows for the theoretical prediction of behaviour and the planning of model experiments enabling an approximation of the description of a living cell. In this work, we present experimental results for lyotropic liquid-crystalline lamellar phases, which may be used as a physical model of phospholipid bilayer. Dielectric measurements were performed under temperature and high-pressure conditions. Complex dynamics, dielectric
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Shukla, Ravi K., K. K. Raina, S. K. Tripathi, Keya Dharamvir, Ranjan Kumar, and G. S. S. Saini. "Observation of Lyotropic Liquid Crystalline Phases in Some Transition Metal Salt Dispersed Soft Non-Aqueous Systems." In INTERNATIONAL CONFERENCE ON ADVANCES IN CONDENSED AND NANO MATERIALS (ICACNM-2011). AIP, 2011. http://dx.doi.org/10.1063/1.3653749.

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Wang, Qi, M. Gregory Forest, and Hong Zhou. "Dynamics of Free Surface and Pure Elongational Flows of Liquid Crystalline Polymers." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0454.

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Abstract The performance properties of many polymers are dominated by the molecular alignment induced during processing by the elongational flow component, that is, the diagonal component of the velocity gradient tensor. Here we discuss two idealizations of this flow-microstructure interaction. We first summarize our recent studies of biaxial nematic patterns and phase transitions (Forest and Wang, 1998a) of lyotropic liquid crystalline polymers (LCPs) in response to imposed elongational flows. We show axisymmetric biaxial nematic patterns coexist with homogeneous biaxial patterns characterize
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Ayop, Shahrul Kadri, and Keiji Sasaki. "Optical Force Manipulation of Nematic Liquid Crystal Assembly." In JSAP-OSA Joint Symposia. Optica Publishing Group, 2018. http://dx.doi.org/10.1364/jsap.2018.18a_211b_2.

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Uznanski, Pawel, and Marian Kryszewski. "Photophysical properties of discotic hexa(heptylthio)tricycloquinazoline in crystalline and liquid crystalline phases." In Liquid Crystals, edited by Jolanta Rutkowska, Stanislaw J. Klosowicz, Jerzy Zielinski, and Jozef Zmija. SPIE, 1998. http://dx.doi.org/10.1117/12.300011.

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ANANDASIVAM, K., MC HOLMES, and DR PECK. "ULTRASONIC INVESTIGATION OF THE PROPERTIES OF A LYOTROPIC NEMATIC LIQUID CRYSTALLINE MESOPHASE." In Spring Conference 1980. Institute of Acoustics, 2025. https://doi.org/10.25144/24943.

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Figueiredo Neto, Antônio M., Oscar R. Santos, Dennys Reis, Arnaldo G. Oliveira-Filho, and Cristiano L. P. Oliveira. "Structure and local order of lyotropic cholesteric calamitic phases: the effect of the chiral molecule (Conference Presentation)." In Liquid Crystals XXVI, edited by Iam Choon Khoo. SPIE, 2022. http://dx.doi.org/10.1117/12.2632245.

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Kramarenko, Nonna L., Viktor I. Kulishov, Lidiya A. Kutulya, and Natalya I. Shkolnikova. "Liquid crystalline systems with twist-grain boundary phases." In Nonlinear Optics of Liquid and Photorefractive Crystals, edited by Gertruda V. Klimusheva and Andrey G. Iljin. SPIE, 1996. http://dx.doi.org/10.1117/12.239192.

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Reports on the topic "Lyotropic liquid crystalline phases"

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Chutimaworapan, Suchada, Chaiyo Chaichantippayuth, and Areerat Laopaksa. Formulation of pharmaceutical products of Garcinia mangostana Linn. extracts. Chulalongkorn University, 2006. https://doi.org/10.58837/chula.res.2006.32.

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Part I: The purpose of the investigation was to develop the extraction process that was simple, practical and giving high yield. The maceration of dried powder of Garcinia mangostana fruit husk with ethyl acetate gave yellow crystalline powder of mangostin. The yield was calculated as 7.47%. The identification of the Garcinia mangostanahusk extract was carried out by thin-layer chromatography (TLC) and differential scanning calorimetry. The TLC of mangostin was done by using the alumina sheet and ethyl acetate: hexane (3:1) as mobile phase. The Rf value as compared with standard mangostin was
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