Under conditions close to those of wine, that is, low pH, aqueous medium, and low temperatures, this work examines the role of carbonyl (acetoin and acetol) and dicarbonyl (glyoxal, methylglyoxal, diacetyl, and pentane-2,3-dione) compounds associated with cysteine in the formation of odorous products. In particular, thiazole, 4-methylthiazole, 2-acetylthiazole, and trimethyloxazole and two sulf...

textile industries use different chemicals in indigo dyeing processes. interest in eco-friendlyprocessing in the textile industry has recently increased because of a larger awareness of environmental issues. for the case of indigo dyeing process, the reducing agent conventionally used is the - environmentally unfavourable – sodium dithionite, which will be replaced in this study with an ecologi...

textile industries use different chemicals in indigo dyeing processes. interest in eco-friendlyprocessing in the textile industry has recently increased because of a larger awareness of environmental issues. for the case of indigo dyeing process, the reducing agent conventionally used is the - environmentally unfavourable – sodium dithionite, which will be replaced in this study with an ecologi...

While most epileptic patients respond to treatment with existing antiepileptic drugs, there remains a considerable number of patients in whom these drugs do not suffice. Such patients, particularly children, are often treated using the ketogenic diet. This diet imposes a strict limit on carbohydrates; while providing for adequate protein, most of the calories are supplied as triacylglycerol, mu...

BACKGROUND The modern society primarily relies on petroleum and natural gas for the production of fuels and chemicals. One of the major commodity chemicals 1,2-propanediol (1,2-PDO), which has an annual production of more than 0.5 million tons in the United States, is currently produced by chemical processes from petroleum derived propylene oxide, which is energy intensive and not sustainable. ...

Interactions of specific and nonspecific agents at the dihydroxyacetone-P and glyceraldehyde-3-P sites of rabbit muscle aldolase are shown by several methods: quenching of protein fluorescence, protection against the destructive action of trypsin, the inhibition of initial rates and of equilibrium exchange rates, and the inactivation caused by NaBH4. It is concluded from inactivation and labeli...

OBJECTIVE To examine the role of aldo-keto reductases (AKRs) in the cardiovascular metabolism of the precursors of advanced glycation end products (AGEs). RESEARCH DESIGN AND METHODS Steady-state kinetic parameters of AKRs with AGE precursors were determined using recombinant proteins expressed in bacteria. Metabolism of methylglyoxal and AGE accumulation were studied in human umbilical vein ...

In recent months a series of papers have appeared, namely by Price and Rittenberg (1950), Plaut and Lardy (1950), and Sakami (1950), which indicate that acetone is utilized by mammalian tissue. Several metabolic pathways have been proposed for this oxidation. Plaut and Lardy (1950) concluded that acetone was directly incorporated into acetoacetate by a mechanism involving C02 fixation. Price an...

Crude bio-oil from fast pyrolysis of biomass has a high oxygen content and acidity, leading to problems with corrosion polymerization/instability. In this work, the catalytic vapor phase upgrading acetol, compound that is present in concentrations vapors, was investigated over three microporous HZSM-5 four mesoporous catalysts different levels acidity mesoporosity. All were steam-treated prior ...

Over 40 new compounds were isolated and identified from a cold-finger molecular distillate obtained from a dichloromethane extract of a lactose-casein browning system, in connection with studies on off-flavor development in dairy products. These compounds consist of 15 C-5 to C-14 furanics, five pyrazines, three pyrroles, three lactones, 2-acetylpyridine, acrolein, cyclopentanone, 2-methyltetra...