中链甘油三酯中甘油二酯的分离与结构鉴定Isolation and identification of diglycerides from medium-chain triglycerides
旨在阐明中链甘油三酯产品中的主要副产物甘油二酯类杂质的化学成分,以中链甘油三酯为原料,通过硅胶柱层析和半制备高效液相色谱法分离其中的甘油二酯,并通过核磁谱、质谱、红外光谱、紫外光谱和气相色谱对甘油二酯的结构进行鉴定。结果表明:从中链甘油三酯中分离出6种甘油二酯(DG-1~DG-6),结构依次被鉴定为1,3-二辛酸甘油二酯、1,2-二辛酸甘油二酯、1,3-辛酸癸酸甘油二酯、1,2-辛酸癸酸甘油二酯、1,3-二癸酸甘油二酯、1,2-二癸酸甘油二酯 ...
王国财,唐顺之,袁诚,李继荣,牟肖男,许文东王国财,唐顺之,袁诚,李继荣,牟肖男,许文东
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Acceptors of fatty acid for glyceride synthesis in guinea pig mammary gland
Glycerides are shown to be synthesized by two pathways in mammary tissue of lactating guinea pigs. One pathway involves the direct acylation of monoglycerides.
O.W. McBride, Edward D. Korn
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The stereochemical requirement for protein kinase C activation by 3-methyldiglycerides matches that found in naturally occurring tumor promoters aplysiatoxins [PDF]
Protein kinase C is stereospecifically activated by, sn-1,2-(S)-diglycerides. A second chiral center was introduced into the diglycerides by preparing the 3-methyl derivatives.
Kishi, Yoshito +3 more
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Purification of neutral lipid fractions by thin-layer chromatography on aluminum oxide
Two-stage thin-layer chromatography on Aluminum Oxide G has been used to separate triglycerides, cholesterol, cholesterol esters, and diglycerides from contaminating fatty acids present in the lipid mixtures.
J.M. Lederkremer, Ralph M. Johnson
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The formation of chloroplasts in dark-grown cells of Euglena gracilis was induced by exposing the cells to constant illumination. Following a lag, the cells accumulated chlorophyll and galactosyl diglycerides simultaneously at almost linear rates.The ...
Abraham Rosenberg, June Gouaux
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Human platelets incubated with thrombin and indomethacin (50 microgram/ml) exhibit an accumulation of diglyceride larger and more persistent than that observed for platelets incubated with thrombin alone. The accumulation appears to be due to the impaired metabolism of diglyceride by diglyceride lipase. In preparations of broken platelets, indomethacin
openaire +2 more sources
Regiospecific analysis of Mono and Diglycerides in Glycerolysis products by GC x GC TOF-MS. [PDF]
Comprehensive bidimensional gas chromatography coupled with time-of-flight mass spectrometry (GC × GC-TOF-MS) was used for the characterization of regiospecific mono- and diglycerides (MG-DG) content in the glycerolysis products derived from five ...
Che Man, Yaakob +11 more
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Low temperature partial alcoholysis of triglycerides
Egg triglycerides chromatographed on silicic acid are eluted in a skew curve in which fatty acid composition varies.The triglycerides were cleaved by sodium methoxide in chloroform-methanol at 0°C to yield diglycerides (11.3%) and monoglycerides (17.5 ...
G.V. Marinetti
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15-HETE-substituted diglycerides selectively regulate PKC isotypes in human tracheal epithelial cells [PDF]
Human tracheal epithelial (TE) cells selectively incorporate their major lipoxygenase product, 15-hydroxyeicosatetraenoic acid (15-HETE), into the sn-2 position of phosphatidylinositol (PI) (S. E. Alpert and R. W. Walenga. Am. J. Respir. Cell Mol.
Ronald W. Walenga +4 more
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SYMMETRICAL 1,3-DIGLYCERIDES AS SOLID LIPID MICROPARTICLES FOR CONTROLLED DRUG DELIVERY [PDF]
Solid lipid microparticles (SLM) made from triglycerides and waxes are promising colloidal systems for controlled drug delivery. In this study, new symmetrical 1,3-diglycerides compromised of dihydroxyacetone and lipids of varying chain length were ...
Yazdi, Sara
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