Results 171 to 180 of about 8,102 (219)

Acyl migration in diglycerides

Journal of the Chemical Society C: Organic, 1966
The equilibrium between 1,2-dipalmitin and 1,3-dipalmitin as a result of acyl migration has been studied using thin-layer chromatography and densitometry. When isomerisation is catalysed by potassium hydroxide, the composition of the equilibrium mixture varies with the temperature of the isomerisation.
I. P. Freeman, I. D. Morton
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The preparation of unsymmetrical diglycerides

Journal of the Chemical Society C: Organic, 1967
Racemic 1,2-di-O-acylglycerols containing stearic and palmitic acids were prepared from 1,2-di-O-acyl-3-O-2′-tetrahydropyranylglycerols by hydrolysis of the tetrahydropyranyl group with boric acid. The 1,2-di-O-acyl-3-O-2′-tetrahydropyranylglycerols were obtained by acylation of 3-O-2′-tetrahydropyranylglycerol which was prepared from glycerol 1,2 ...
Jill Gigg, Roy Gigg
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Gas-liquid chromatographic analysis of diglycerides

Chemistry and Physics of Lipids, 1971
Abstract A gas-liquid chromatography method for the resolution of 1,2-diglycerides of a given carbon number from the 1,3-isomers of the same carbon number is presented. Resolution of saturated diglycerides from the unsaturated diglycerides is also achieved, although complete resolution of unsaturated diglycerides is not obtained.
J F, O'Brien, W E, Klopfenstein
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Monogalactosyl diglyceride and digalactosyl diglyceride from commercial rapessed “lecithin”

Journal of the American Oil Chemists' Society, 1972
AbstractBy silicic acid column separation small quantities of glycolipid‐rich fractions have been isolated from commercial Swedish rapeseed “lecithin.” Major components in these fractions are monogalactosyl diglyceride and digalactosyl diglyceride which have been identified by Rf on thin layer chromatography specific color reactions and IR spectrometry.
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Monogalactosyl diglyceride: A new neurolipid

Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1967
Abstract 1. 1. Monogalactosyl diglyceride was isolated from bovine spinal cord and shown to be identical with the same lipid from spinach, except for fatty acid analysis. 2. 2. In particular, unequivocal evidence is presented for the presence of the β-glycosidic bond and the D configuration of the glyceryl moiety. 3. 3.
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Quantitative analysis of sulfolipid (sulfoquinovosyl diglyceride) and galactolipids (monogalactosyl and digalactosyl diglycerides) in plant tissues

Analytical Biochemistry, 1968
Abstract A method has been developed for the quantitative and rapid estimation of sulfolipid and galactolipids in plant tissues. The procedure is based on the isolation of pure glycolipids by a combination of DEAE-cellulose column and thin-layer chromatography.
P G, Roughan, R D, Batt
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Galactosyl-diglyceride from Actinomyces viscosus

Chemistry and Physics of Lipids, 1974
Abstract The glycolipids from Actionomyces viscosus were investigated. A 1-O-monogalactosyl-diglyceride was identified. Analysis of its fatty acids by mass spectrometry showed that they consisted largely of palmitic and stearic acids and their monounsaturated homologues.
M. Yribarren, E. Vilkas, J. Rozanis
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Diglyceride-transporting lipoproteins inLocusta

Journal of Comparative Physiology ? B, 1977
The majority of haemolymph proteins obtained from resting mature locusts are soluble in 50% saturated (NH4)2SO4 solution. Chromatographically, these proteins may be resolved on Sepharose 6B into three partially included fractions. The leading high molecular weight fraction, A, is predominant and all the diglyceride in “resting blood” is associated with
Mwangi, R.W., Goldsworthy, G.J.
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Glycosyl diglycerides from Pseudomonas rubescens

Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1968
Abstract Glycolipids containing d -glucose and d -glucuronic acid have been isolated from Pseudomonas rubescens. The lipids belonged to the class of i -O-monoglycosyl diglycerides. In both lipids the glycosidic linkage had the β-configuration. Component fatty acids, which were the same for both lipids, ranged from C13 to C19 and included saturated,
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Lipase catalysed isomerisation of 1,2-(2,3)-diglyceride into 1,3-diglyceride. The crucial role of water

Biotechnology Letters, 1991
Enzyme catalyzed isomerisation of 1,2-dipalmitin into the 1,3-isomer is shown to occur with 1,3 regiospecific lipases. The mechanism of this transformation is elucidated and the crucial role of the water still present in the enzyme preparation is shown.
Andreas Heisler, Claude Rabiller, Laurence Hublin   +2 more
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