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Showing 1 to 10 of 10 for “"Maltol."”.
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New insight into the coordination and reactivity of hetero-substituted maltol and method development for complex mixture analysis of asphaltene.
The metal complexes of maltol and its hetero-substitutions have a wide variety of bioinorganic applications. However, the latest addition to this family of molecules, 3-hydroxy-2-methyl-4H-pyran-4-selenone (selenomaltol), had not previously had its metal complexes characterized. To remedy this, …
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Numerical modelling of dilatant rock joints
Aluminium forms a highly neurotoxic complex with maltol (3-hydroxy-2-methyl-4H-pyran-one). The stability of this complex has been determined using glass-electrode potentiometry. Owing to the effect on nuclear relaxation behaviour, paramagnetic contrast agents have immense diagnostic potential and …
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Mechanistic and Synthetic Studies of Oxidopyrylium Cycloaddition Reactions
… show that the methyl placement on isomers, maltol and allo maltol-derived ylides, substantially influences reactivity’s observed in both their dimerization and cycloaddition pathways. Due to steric factors, maltol-derived ylides were shown to have a higher energy barriers to dimerization, …
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Exploring hetero-atom derivatization in maltols and flavonols : the effect on reactivity of flavonol dioxygenation.
… to dioxygen wherein O2 is replaced with HNO. Maltol is a natural product that also contains a 3-hydroxy pyrone core. Initially isolated from the bark of larch trees, maltol has found extensive use in the food industry as a food additive as well as in the cosmetics industry as a fragrance …
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Identification and quantitation of predominant odorants in roasted chicory
… dihydro-5-hydroxy-6-methyl-4H-pyran-4-one (dihydromaltol), 1-octen-3-one and 2-ethyl-3,5-dimethylpyrazine, 4-hydroxy-2,5-dimethyl-3(2H)-furanone (HDMF), 3-hydroxy-2-methyl-4-pyrone (maltol) , (E,E)-2,4-decadienal, and trans-4,5-epoxy-(E)-2-decenal. Rotundone, with its distinctive aromatic woody, …
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Deamidation of soy protein by protein-glutaminase: Process evaluation and effect of deamidation on protein functional properties and flavor-protein interactions
… containing flavor compounds (vanillin and maltol). The thermodynamic parameters of binding indicated that the flavor-protein interactions were spontaneous and that the nature of the interactions shifted from entropy to enthalpy driven after deamidation. Deamidation of soy protein appears to …
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Synthesis characterization, and reactivity of ruthenium maltolato complexes
… was to synthesize and analyze some new ruthenium maltolato complexes as well as to explore their viability as homogeneous catalysts, particularly inaqueous media. The compounds Ru(ma)2(PPh3)2 (1), Ru(ma)2(DMS0)2 (2), Ru(ma)2(COD) (3) and RuH(ma)(C0)(PPh3)2 (4) (where Hma is maltol) were prepared …
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Synthese und Komplexbildungseigenschaften ausgewählter Maillard-Reaktionsprodukte
… der ausgewählten MRP Nε-Carboxymethyllysin, Isomaltol und Maltosin sowie deren Strukturanaloga Maltol, Deferipron, Mimosin und Pyridosin mit den physiologisch relevanten Metallionen Cu(II), Zn(II), Fe(III), Al(III) und Mn(II) zu untersuchen. Dazu wurden die MRP Nε-Carboxymethyllysin und Maltosin …
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Oxovanadium(IV) and (V) complexes with naturally-occurring molecules
… and V0(hmp)2 which were prepared directly from maltol and kojic acid, respectively, using vanadyl and methylamine in a one-potsynthesis method. All oxovanadium complexes were characterized by infrared spectroscopy, mass spectrometry, elemental analyses and room temperature magnetic …
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Evaluation and Development of Metal-Binding Agents that Alter Copper Bioavailability
… activity (8-hydroxyquinoline (8HQ), thiomaltol and pyrithione) were analyzed and compared to those of counterpart ligands that did not inhibit <italic>C. neoformans</italic> growth, namely clioquinol, maltol, pyridinol-n-oxide, deferiprone, and thiodeferiprone. The UV-vis spectroscopy of …