scholarly journals Enzymatic Production of Glyoxal from Ethylene Glycol Using Alcohol Oxidase from Methanol Yeast

1994 ◽  
Vol 58 (1) ◽  
pp. 170-173 ◽  
Author(s):  
Kimiyasu Isobe ◽  
Hiroshi Nishise
Keyword(s):  
Ethylene Glycol ◽  
Alcohol Oxidase ◽  
Enzymatic Production ◽  
Methanol Yeast

scholarly journals Glycolaldehyde Production from Ethylene Glycol with Immobilized Alcohol Oxidase and Catalase

1998 ◽  
Vol 62 (8) ◽  
pp. 1589-1591 ◽  
Author(s):  
Hiroyuki UKEDA ◽  
Tohru ISHII ◽  
Masayoshi SAWAMURA ◽  
Kimiyasu ISOBE
Keyword(s):  
Ethylene Glycol ◽  
Alcohol Oxidase

2,3-Butanediol in plasma from an alcoholic mistakenly identified as ethylene glycol by gas-chromatographic analysis

1991 ◽  
Vol 37 (8) ◽  
pp. 1453-1455 ◽  
Author(s):  
A W Jones ◽  
L Nilsson ◽  
S A Gladh ◽  
K Karlsson ◽  
J Beck-Friis
Keyword(s):  
Gas Chromatography ◽  
Ethylene Glycol ◽  
Chromatographic Analysis ◽  
Enzymatic Production ◽  
Low Concentrations ◽  
Elimination Half ◽  
Ethylene Glycol Poisoning ◽  
Incorrect Diagnosis ◽  
High Concentrations ◽  
Derivatives Of

Abstract 2,3-Butanediol was mistakenly identified as ethylene glycol in plasma specimens from two alcoholic patients. The cyclic phenylboronate ester derivatives of 2,3-butanediol and ethylene glycol had the same retention time when OV-17 was used as the stationary phase for gas chromatography. This led to incorrect diagnosis of ethylene glycol poisoning and unnecessary invasive therapy. Plasma from two chronic alcoholics contained 2,3-butanediol at 3.5 and 3.4 mmol/L. The elimination half-life of 2,3-butanediol was 3.9 days when ethanol was administered during therapy for suspected ethylene glycol poisoning. Low concentrations of 2,3-butanediol might be present in blood of chronic alcoholics as a result of a novel pathway of intermediary metabolism associated with some forms of alcoholism. However, a more likely explanation for fairly high concentrations of 2,3-butanediol is enzymatic production from 2-butanone. This ketone occurs in denatured alcohol preparations often consumed by alcoholics in Sweden.

Design of a sustainable process for enzymatic production of ethylene glycol diesters via hydroesterification of used soybean cooking oil

2021 ◽  
pp. 107062
Author(s):  
José G.E. Guedes Júnior ◽  
Fernanda R. Mattos ◽  
Guilherme J. Sabi ◽  
Wagner C.A. Carvalho ◽  
Jaine H.H. Luiz ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Enzymatic Production ◽  
Cooking Oil

PIEZOELECTRIC PROPERTIES OF POLY(3-HYDROXYBUTYRATE-CO-3-HEDROXYBUTYRATE)-CO-POLY(ETHYLENE GLYCOL) PRODUCED BY CONTROLLED MICROBIOLOGICAL BIOSYNTHESIS

2019 ◽  
Vol 10 (10) ◽  
Author(s):  
Anton Bonartsev ◽  
Vera Voinova ◽  
Elizaveta Akoulina ◽  
Andrey Dudun ◽  
Irina Zharkova ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Piezoelectric Properties ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

Hydrogenolysis of glucose and fructose in glycol solutions over CuO-MgO-ZrO2 catalyst

2020 ◽  
pp. 48-55
Author(s):  
M.E. Sharanda ◽  
◽  
E.A. Bondarenko ◽  
Keyword(s):  
Ethylene Glycol ◽  
Propylene Glycol ◽  
Flow Reactor ◽  
General Trend ◽  
Raw Materials ◽  
Reaction Products ◽  
Renewable Raw Materials ◽  
High Partial Pressure ◽  
Zro2 Catalyst ◽  
Phase Process

Ethylene glycol and propylene glycol are important representatives of polyols. On an industrial scale, they are obtained from petrochemical raw materials. Within a decade, significant efforts were made for the producing of polyols from biologically renewable raw materials - carbohydrates. The general trend for carbohydrate hydrogenolysis includes application of liquid-phase process with the use of modified metal-oxide catalysts, at 120-120 ° C and pressure of 3MPa or above. So high pressure is used for the reason to increase hydrogen solubility, and also due to the high partial pressure of low boiling solvents. We supposed that usage of high boiling solvents could allow hydrogenolysis to be performed at the lower pressure. Ethylene glycol and propylene glycol are of particular interest as such kind of solvent since they are both the main products of glucose hydrogenolysis. In this work, the process of hydrogenolysis of glucose and fructose over Cu / MgO-ZrO2 catalyst have been studied at temperature range of 160-200 °C and a pressure of 0.1-0.3 MPa in a flow reactor. The solvents were simultaneously the target products of the reaction - ethylene glycol and / or propylene glycol. Gas chromatography and 13C NMR were used for the reaction products identification. It was found that the solubility of glucose in propylene glycol is 21 % by weight, and in ethylene glycol 62% by weight. It was pointed out that the process of hydrogenolysis can take place at a pressure close to atmospheric. Under these conditions, the conversion of hexoses reaches 96-100 %. The reaction products are preferably propylene glycol and ethylene glycol. The total selectivity for C3-2 polyols is 90-94 %, that is higher than in the hydrogenolysis of glucose in aqueous solution.

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