نتایج جستجو برای: arbutin
تعداد نتایج: 341 فیلتر نتایج به سال:
Vilde D Haakensen ([email protected]) Ole Christian Lingjærde ([email protected]) Torben Lüders ([email protected]) Margit Riis ([email protected]) Aleix Prat ([email protected]) Melissa A Troester ([email protected]) Marit M Holmen ([email protected]) Jan Ole Frantzen ([email protected]) Linda Romundstad (Linda.Rom...
The infusion of the aerial parts of Turnera diffusa was phytochemically examined. Chromatographic procedures led to the isolation of a new flavone glycoside, five known flavonoids and p-arbutin. Structures were determined by 1D- and 2D NMR experiments, as well as ES-MS and UV spectra.
Deoxyarbutin, a potent inhibitor of tyrosinase, could act as substrate of the enzyme. Oxytyrosinase is able to hydroxylate deoxyarbutin and finishes the catalytic cycle by oxidizing the formed o-diphenol to quinone, while the enzyme becomes deoxytyrosinase, which evolves to oxytyrosinase in the presence of oxygen. This compound is the only one described that does not release o-diphenol after th...
In this study, we report one-pot, single step synthesis of silver nanoparticles stabilized by using arbutin. The concentration reducing agent (NaBH4) used in the preparation was kept at double, and arbutin as a stabilizing agent. confirmation prepared done color change UV-Vis surface plasmon resonance peak 435 nm spectrum. Size dispersion carried out Dynamic Light Scattering (DLS) charge on nan...
The first reaction in the metabolism of cellobiose in Aerobad er aerogenes was shown to be adenosine 5’-triphosphatedependent phosphorylation at C-6 of the nonreducing ring to yield 6-0-phosphoryl-O-D-glucopyranosyl-(1 + 4)-D-glucase (cellobiose monophosphate). The inducible fl-glucoside kinase that catalyzes the reaction was partially purified and characterized. In addition to cellobiose, the ...
An enzyme in extracts of Aerobacter aerogenes was shown to catalyze the hydrolytic cleavage of cellobiose monophosphate (6-0-phosphoryl-b-D-ghtcopyranosyl-(1 --f 4)-D-gillcase) to yield equimolar amounts of D-glucose and D-glucose 6-phosphate. The enzyme was partially purified and characterized. In addition to cellobiose monophosphate, it catalyzed the cleavage of cellobiitol phosphate, arbutin...
An enzyme in extracts of Aerobacter aerogenes was shown to catalyze the hydrolytic cleavage of cellobiose monophosphate (6-0-phosphoryl-b-D-ghtcopyranosyl-(1 --f 4)-D-gillcase) to yield equimolar amounts of D-glucose and D-glucose 6-phosphate. The enzyme was partially purified and characterized. In addition to cellobiose monophosphate, it catalyzed the cleavage of cellobiitol phosphate, arbutin...
Cell cultures of Varthemia persica, Peganum harmala and Pycnocycla spinosa have been studied to evaluate their abilities to bioconvert exogenous hydroquinone. Arbutin is an important substance that has several pharmaceutical applications; therefore, we have established V. persica and P. spinosa cultures which seem to be able to metabolize hydroquinone. C...
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