We use cookies to help provide and enhance our service and tailor content and ads. Phase transitions and fluidity characteristics of lipids... Chemistry Department, Sheffield University, Sheffield S3 7HF, https://doi.org/10.1017/S0033583500001797. "subject": true, 54 0 obj 8 0 obj If a pierced lid is not available, the same effect can be achieved by placing a grain of sand (about 20 µm in diameter) on the rim of the crucible before sealing it. XII. and to the main phase transition temperature (T M)of∼38°C. When dispersed in water, lipids align themselves with their polar heads toward the water to form micelles (clusters), liposomes (microscopic concentric spheres or vesicles) or other structures. "metrics": true, Leterrier, François The size of the vesicles was reduced by performing a series of 15 freezing/thawing cycles: The large unilamellar vesicles (LUVs) that resulted were subjected to ultrasound in an ice bath for two periods of 20 minutes with a pause of 5 minutes. Thus, this method allowed to specify the phase transition temperature of many natural or synthetic surfactants independently of their polar head or hydrophobic part. "comments": true, <>/ProcSet[/PDF/Text/ImageB]/XObject<>>>/Type/Page>> and "isLogged": "0", 1977. Bloom, M. Thede, Anne E. Solid state and mesomorphic properties of some 2,3-diacyl-DL-phosphatidylethanolamines, Thermal and spectroscopic studies of lipids and membranes, Differential thermal analysis of phospholipids, Nmr spectroscopic studies of the interaction of phospholipids with cholesterol, Physical studies of phospholipids. The contents of calcium sulfate dihydrate and calcium sulfate hemihydrate can be determined in cement with good accuracy by thermogravimetry. Determination of Calcium Sulfate Dihydrate and Hemihydrate in Cement | Thermal Analysis Application No. 1 0 obj I. Full text views reflects PDF downloads, PDFs sent to Google Drive, Dropbox and Kindle and HTML full text views. The lipid film was hydrated with HPLC grade deionized water (3 mL) at 51 °C for one hour, which led to the formation of MLVs (multilamellar vesicles). Eibl, Hansjörg and ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. Teubner, Max The normal alcohol up to, Calorimetric investigation of the influence of cholesterol on the transition properties of bilayers formed from synthetic L-α-lecithins in aqueous suspension, Ion transfer across lipid membranes in the presence of gramicidin, Magnetic resonance studies on membrane and model membrane systems: Proton magnetic relaxation rates in sonicated lecithin dispersions, Nuclear magnetic resonance studies of the interaction of valinomycin with unsonicated lecithin bilayers, Molecular motion in spin-labelled phospholipids and membranes, Permeability properties of liposomes prepared from dipalmitoyl lecithin, dimyristoyl lecithin, egg lecithin, rat liver lecithin and beef brain sphingomyelin, Lateral diffusion of phospholipids in a vesicle membrane, Freezing and melting of lipid bilayers and the mode of action of nonactin, valinomycin and gramicidin, Thermal analysis of lipids, proteins and biological membranes, Physical studies of myelin. "metricsAbstractViews": false, The phase behavior of lipid bilayers is largely determined by the strength of the attractive Van der Waals interactions between adjacent lipid molecules. Sauerheber, Richard D. and If you would like to take full advantage of the site, please update your web browser to help improve your experience while browsing www.mt.com. dissolved in ethanol. anti-inflammatory, bactericidal, antiviral and fungicidal action, tumor growth reduc-tion, protective effect for the liver, antitumor- and antioxidation activity [1]. This has led to the use of liposomes as drug delivery systems for medical applications (via intravenous injection). Some 500 µL of this was lyophilized and used for other DSC measurements. I. 1977. * Views captured on Cambridge Core between September 2016 - 27th November 2020. Structure of bilayer membranes, Methods for probing lateral diffusion of membrane components. Kitajima, Yasuo and Nuclear magnetic resonance studies of molecular motion in some pure lecithin-water systems, Phase transitions of phospholipid bilayers and membranes of, Liquid crystalline, waxy and crystalline phases in binary mixtures of pure anhydrous soaps, Stable phases occurring between true crystal and true liquid for single pure anhydrous soaps, Monte Carlo study of rotational premolting in crystals of long chain paraffins, The effect of density on the configurational properties of long-chain molecules using a Monte Carlo method, Progress in the Chemistry of Fats and Other Lipids. We would like to let you know that some features on the site may not be available or may not work as nicely as they would on a newer browser version. "lang": "en" Thermotropic Phase Transitions of Pure Lipids in Model Membranes and Their … endobj Hydration of the stored powder regenerated the liposome suspensions. 1. } Sauerheber, Richard D. Liposomes resemble the membrane of a living cell and are used as models for cell membranes.

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