scholarly journals DISODIUM PHOSPHATE AS A CATALYST FOR THE QUANTITATIVE OXIDATION OF GLUCOSE TO CARBON DIOXIDE WITH HYDROGEN PEROXIDE

1920 ◽  
Vol 45 (1) ◽  
pp. 1-22
Author(s):  
Edgar J. Witzemann
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Peroxide ◽  
Disodium Phosphate ◽  
Oxidation Of Glucose

scholarly journals Crystallization and preliminary X-ray analysis of formate oxidase, an enzyme of the glucose–methanol–choline oxidoreductase family

2010 ◽  
Vol 66 (9) ◽  
pp. 1064-1066 ◽  
Author(s):  
Yoshifumi Maeda ◽  
Daiju Doubayashi ◽  
Takumi Ootake ◽  
Masaya Oki ◽  
Bunzo Mikami ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Peroxide ◽  
Single Crystal ◽  
Aspergillus Oryzae ◽  
Diffraction Data ◽  
Diffusion Method ◽  
Hanging Drop ◽  
Space Group ◽  
X Ray ◽  
Vapour Diffusion

Formate oxidase (FOD), which catalyzes the oxidation of formate to yield carbon dioxide and hydrogen peroxide, belongs to the glucose–methanol–choline oxidoreductase (GMCO) family. FOD fromAspergillus oryzaeRIB40, which has a modified FAD as a cofactor, was crystallized at 293 K by the hanging-drop vapour-diffusion method. The crystal was orthorhombic and belonged to space groupC2221. Diffraction data were collected from a single crystal to 2.4 Å resolution.

scholarly journals Kinetic Studies on Enzyme-Catalyzed Reactions: Oxidation of Glucose, Decomposition of Hydrogen Peroxide and Their Combination

2009 ◽  
Vol 96 (7) ◽  
pp. 2977-2988 ◽  
Author(s):  
Zhimin Tao ◽  
Ryan A. Raffel ◽  
Abdul-Kader Souid ◽  
Jerry Goodisman
Keyword(s):  
Hydrogen Peroxide ◽  
Kinetic Studies ◽  
Glucose Decomposition ◽  
Catalyzed Reactions ◽  
Enzyme Catalyzed Reactions ◽  
Oxidation Of Glucose

Influence of Compressed Carbon Dioxide on the Oxidation of Cyclohexane with Hydrogen Peroxide in Acetic Acid

2006 ◽  
Vol 59 (3) ◽  
pp. 225 ◽  
Author(s):  
Liang Gao ◽  
Tao Jiang ◽  
Buxing Han ◽  
Baoning Zong ◽  
Xiaoxin Zhang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Peroxide ◽  
Acetic Acid ◽  
Binary System ◽  
Reaction System ◽  
Phase Region ◽  
Phase Behaviour ◽  
Phase System ◽  
Two Phase ◽  
Three Phase

The oxidation of cyclohexane with H2O2 in a compressed CO2/acetic acid binary system was studied at 60.0 and 80.0°C, at pressures up to 18 MPa, and with the zeolite TS-1 as catalyst. The phase behaviour of the reaction system was also observed. There are three fluid phases in the reaction system at lower pressure but two at higher pressures. In the three-phase region the yields of the products, cyclohexanol and cyclohexanone, increase considerably with increasing pressure and reaches a maximum near the phase-separating pressure. CO2 can thus enhance the reaction effectively. However, the effect of pressure on the yield is very limited after the transition to a two-phase system.

The study of the effects of carbon dioxide-induced elevation of hydrogen peroxide toxicity on microbes as a novel tool for water purification

2010 ◽  
Vol 27 (5) ◽  
pp. 1091-1098 ◽  
Author(s):  
Varsik Martirosyan ◽  
Ehsanollah Moosavi ◽  
Sinerik Ayrapetyan
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Peroxide ◽  
Water Purification

Carbon dioxide as an alternative solvent for the direct synthesis of hydrogen peroxide: A review of recent activities

2015 ◽  
Vol 248 ◽  
pp. 128-137 ◽  
Author(s):  
Aneta Pashkova ◽  
Roland Dittmeyer
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Peroxide ◽  
Direct Synthesis

scholarly journals The mechanism of carbon assimilation in green plants: the photolytic decomposition of carbon dioxide in vitro

1906 ◽  
Vol 78 (526) ◽  
pp. 318-327 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Peroxide ◽  
Carbon Assimilation ◽  
Enzymic Activity ◽  
Green Plants ◽  
Negative Results ◽  
Positive Side ◽  
Uranium Compounds ◽  
Photolytic Decomposition

In a previous paper* it was shown that carbon dioxide is decomposed in the green parts of plants independently of vital or enzymic activity, formaldehyde and hydrogen peroxide being produced. It follows from the analysis of the process of carbon assimilation there set out that this first step, the photolysis of carbon dioxide, should be capable of being artificially induced under laboratory conditions. It is impossible here to give a brief account of the work of previous investigators on these lines; it is sufficient to state that all experiments with chlorophyll solutions have given negative results, and as regards those with other forms of chlorophyll, such as dried powdered leaves or expressed juice, the balance of evidence favours the view that to decomposition takes place. Reference may be made to papers by Friedel and Macchiati on the positive side, and by Harroy,§ Herzog,|| and, quite recently, Bernard,¶ who obtained only negative results. Experiments with uranium compounds will be considered later.

scholarly journals Supercritical carbon dioxide-assisted rapid synthesis of few-layer black phosphorus for hydrogen peroxide sensing

2016 ◽  
Vol 80 ◽  
pp. 34-38 ◽  
Author(s):  
Shancheng Yan ◽  
Bojun Wang ◽  
Zhulan Wang ◽  
Dong Hu ◽  
Xin Xu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Peroxide ◽  
Supercritical Carbon Dioxide ◽  
Black Phosphorus ◽  
Rapid Synthesis ◽  
Supercritical Carbon

scholarly journals Production of Oxidants by Ion Bombardment of Icy Moons in the Outer Solar System

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Philippe Boduch ◽  
Enio Frota da Silveira ◽  
Alicja Domaracka ◽  
Oscar Gomis ◽  
Xue Yang Lv ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Peroxide ◽  
Solar System ◽  
Ion Irradiation ◽  
Pure Water ◽  
Outer Solar System ◽  
Water Ice ◽  
Icy Moons ◽  
Different Temperatures ◽  
Frozen Gases

Our groups in Brazil, France and Italy have been active, among others in the world, in performing experiments on physical-chemical effects induced by fast ions colliding with solids (frozen gases, carbonaceous and organic materials, silicates, etc.) of astrophysical interest. The used ions span a very large range of energies, from a few keV to hundreds MeV. Here we present a summary of the results obtained so far on the formation of oxidants (hydrogen peroxide and ozone) after ion irradiation of frozen water, carbon dioxide and their mixtures. Irradiation of pure water ice produces hydrogen peroxide whatever is the used ion and at different temperatures. Irradiation of carbon dioxide and water frozen mixtures result in the production of molecules among which hydrogen peroxide and ozone. The experimental results are discussed in the light of the relevance they have to support the presence of an energy source for biosphere on Europa and other icy moons in the outer Solar System.

scholarly journals Formaldehyde as an oxidation product of chlorophyll extracts

1914 ◽  
Vol 87 (596) ◽  
pp. 378-385 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Peroxide ◽  
Alcoholic Solution ◽  
Light Petroleum ◽  
Not Given ◽  
Moist Air ◽  
Reduced Pressure ◽  
Synthetic Process ◽  
Chlorophyll Extracts

Of recent years the action on carbon dioxide of chlorophyll in vitro has assumed some importance as possibly throwing light on the nature of the photo-synthetic process of green plants. Thus Usher and Priestley have stated that films of extracted chlorophyll in the presence of moist air and carbon dioxide produce formaldehyde and hydrogen peroxide under the influence of light. The earlier work of these authors has been adversely commented upon by several writers, notably by Ewart, to whose criticisms Usher and Priestley have replied with a number of additional experiments and arguments, referring also to the work of Schryver, subsequent to that of Ewart, as affording strong confirmation of their views as far as the synthesis of the aldehyde is concerned. The facts set forth in the present paper came to light during an attempt to confirm and extend the observations of Usher and Priestley and of Schryver. Grass was extracted with alcohol, usually in the cold and in the presence of calcium carbonate. In some experiments the alcoholic liquid was evaporated to dryness under reduced pressure and the residue extracted with ether; in others a solution of chlorophyll in light petroleum was obtained by shaking the alcoholic solution with that liquid. The method of experiment was based upon that described by Schryver, the ether or petroleum extract being allowed to evaporate on glass plates and exposed to light under the various conditions to be mentioned below. As was the case in the later experiments of Usher and Priestley themselves, the test which has been relied upon for the detection of formaldehyde is the very delicate one devised by Schryver, who has found that the reaction is not given by such other members of the series as have been examined up to the present. It has been assumed in the course of these experiments, as in the work of the investigators already mentioned, that the aldehyde produced is formaldehyde, but it is very important that the possibility of the observed effects being due to some other aldehyde or to a mixture of aldehydes should be borne in mind. This point still requires investigation.

Preparation of Gluconic Acid by Oxidation of Glucose with Hydrogen Peroxide

2016 ◽  
Vol 41 (1) ◽  
pp. e12742 ◽  
Author(s):  
Ying-Ming Mao
Keyword(s):  
Hydrogen Peroxide ◽  
Gluconic Acid ◽  
Oxidation Of Glucose
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