Results 1 to 10 of about 2,768 (157)
Total synthesis of hexuronic acids
Six stereoisomeric hexuronic acids (tert-butyl esters of methyl pyranosides) having the altro, manno, gluco, gulo, galacto, and talo configurations were obtained from cis,trans-tert-butyl 2-methoxy-5,6-dihydro-2H-pyran-6-carboxylate (5). The synthesis involved the following successive steps: epoxidation of the double bond in 5, opening of the epoxides ...
A Zamojski
exaly +4 more sources
Electrophoresis of hexuronic acids
Marlys J. St. Cyr
exaly +4 more sources
Objectives: to investigate the effects produced by the combined action of L-arginine and the NF-κB inhibitor ammonium pyrrolidine dithiocarbamate (PDTC) on the markers of connective tissue disruption in the skin of white rats and its biomechanical ...
Khmil D. A. +2 more
doaj +2 more sources
G.L.C. of the O-trimethylsilyl derivatives of hexuronic acids
The free acids, sodium salts, and lactones of several hexuronic acids have been studied as their O-trimethylsilyl derivatives by gas-liquid chromatography using SE-30 and XE-60 liquid phases. Silylation was best performed in methyl sulphoxide. The equilibrium between the various forms of a hexuronic acid in methyl sulphoxide was also studied by g.l.c ...
J F Kennedy
exaly +4 more sources
Colorimetric determination of hexuronic acids in plant materials
Ralph W. Scott
exaly +3 more sources
This study aimed to investigate the effects of ammonium pyrrolidinedithiocarbamate (an inhibitor of NF κB activation) and sulforaphane (an inducer of the Nrf2/antioxidant response element (ARE) signaling pathway) on the depolymerization processes of ...
R.M. Ryabushko +2 more
doaj +2 more sources
Hexuronic Acid as the Antiscorbutic Factor [PDF]
A CHARACTERISTIC property of Prof. Szent-Gyorgyi's hexuronic acid is its behaviour towards iodine. Two atoms of iodine are taken up in aqueous solution (neutral or acid) with formation of two molecules of hydrogen iodide. We find that this is due to oxidation at a double bond.
E. L. HIRST, R. J. W. REYNOLDS
+11 more sources
Extraction and Optimization of Fucoidan From Sargassum muticum Using Acidic Eutectic Solvents and Evaluation of Their Effects on Fibroblast Cell Lines. [PDF]
Fucoidan, a sulfated polysaccharide extracted from the cell wall of macroalgae such as S. muticum, exhibits promising biological properties. This study investigated a green extraction using deep eutectic solvents (DESs), with an emphasis on process optimization and bioactive evaluation of fucoidan.
Leite M +8 more
europepmc +2 more sources
THE ANALYSIS OF HEXURONIC ACIDS IN BIOLOGICAL MATERIALS BY GAS–LIQUID PARTITION CHROMATOGRAPHY
NRC publication ...
M B Perry
exaly +1 more source
Erucastrum virgatum subsp. virgatum (Brassicaceae) Endemic to Sicily (Italy): Biological Properties and Phenolic Content of Leaf Extracts. [PDF]
ABSTRACT The present work reports a comparative study between extracts obtained by different methods (ultrasonic bath‐assisted extraction, maceration, decoction, and Soxhlet extraction) from the leaves of Erucastrum virgatum subsp. virgatum collected in Sicily (Italy), using ethanol and water as “green” solvents.
Galletta B +8 more
europepmc +2 more sources

