نتایج جستجو برای: hydroxymethylfurfural
تعداد نتایج: 979 فیلتر نتایج به سال:
Honey is a sweet and natural product of high nutritional value, produced by honey bees (Apis mellifera) composed mainly water carbohydrates, nitrogen compounds, enzymes, organic acids, amino phenolic flavonoids, vitamins, minerals other phytochemical substances. For cultural reasons, it widely used for therapeutic purposes various. However, despite this factor, the most fraudulent food in Brazi...
Hydroxymethylfurfural (HMF), a well-known heterocyclic Maillard reaction product, has often been studied for its potential toxic, mutagenic, and carcinogenic effects. Recent clinical studies, however, have strongly suggested that HMF might have exciting antitumor potential. We report on the development and validation of a bioanalytical assay for HMF that could be suitable as a basis for pharmac...
Previous kinetic modelling for dilute H2SO4-acid hydrolysis of sugarcane bagasse operated using batch reactor led to conclude that hemicellulose conversion, about 75 % of theoretical, was possible to be reached using 1.0 % w v H2SO4 solution, solid load equal to 20 % and 80 min of operation. The present study aims to expand the fundamental understanding of the kinetic involved in this process. ...
We evaluated a colorimetric assay for glycosylated hemoglobin to determine the effects of several variables --oxalic acid concentration, extraneous glucose, hemoglobin concentration, hydrolysis interval, and 5-hydroxymethylfurfural destruction--and the precision. The interference seen when the blood glucose concentration exceeds 2.0 g/L (11 mmol/L) can be eliminated by washing the erythrocytes ...
Ab initio molecular dynamics (MD) simulations were employed to elucidate xylose and glucose degradation pathways. In the case of xylose, a 2,5-anhydride intermediate was observed leading to the formation of furfural through elimination of water. This pathway agrees with one of the mechanisms proposed in the literature in that no open chain intermediates were found. In the case of glucose, a ser...
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