scholarly journals Application of Transaminases in a Disperse System for the Bioamination of Hydrophobic Substrates

2020 ◽  
Vol 362 (5) ◽  
pp. 1156-1166 ◽  
Author(s):  
Andrea Fiorati ◽  
Per Berglund ◽  
Maria S. Humble ◽  
Davide Tessaro
Keyword(s):  
Disperse System

Enzymatic Iodination of Maleic and Fumaric Acids Diethyl Esters

2009 ◽  
Vol 59 (12) ◽  
pp. 1400-1404
Author(s):  
Marius Tudorascu ◽  
Spiridon Oprea ◽  
Afrodita Doina Marculescu ◽  
Stefania Tudorascu
Keyword(s):  
Hydrogen Peroxide ◽  
Tartaric Acid ◽  
Disperse System ◽  
Hydrogen Peroxide Solution ◽  
Ultrasonic Pretreatment ◽  
Tartaric Acids ◽  
Inactive Form ◽  
Generating System ◽  
Sole Product

The mechanism of the enzymatic iodination process of diethylmaleate and diethylfumarate (which present no miscibility with water) in the presence of lactoperoxidase, both in diluted hydrogen peroxide solution and in a generating system of hydrogen peroxide using ammonium and calcium iodides as halide sources in disperse system (after an ultrasonic pretreatment) was studied. The obtained sole product (diethyl-2, 3-diiodosuccinate) after the enzymatic iodination process was directly hydrolyzed to a tartaric acid present in an optically inactive form. The mechanism of obtaining the intermediate and final products and respectively, the existence of both D, L-tartaric acid and meso-tartaric acids (as lithium bitartrates) were also investigated.

scholarly journals Application of Amino Transaminases in a Disperse System for the Biotransformation of Hydrophobic Substrates

2019 ◽  
Author(s):  
Andrea Fiorati ◽  
Per Berglund ◽  
maria humble ◽  
Davide Tessaro
Keyword(s):  
Disperse System ◽  
Reductive Amination ◽  
Ionic Surfactant ◽  
Minimal Amount

The challenging bioamination of hydrophobic substrates has been attained through the employment of a disperse system consisting in a combination of a low polarity solvent (e.g. isooctane or MTBE), a non-ionic surfactant and a minimal amount of water. In these conditions, good conversions are achieved, often coupled with a superior stereoselectivity if compared with the corresponding chemical reductive amination. An array of synthetically useful 4-substituted aminocyclohexanes was consequentially synthesized and stereochemically characterized.<br>

Grinding slag from ferro-nickel process: some properties of the disperse system

2002 ◽  
Vol 124 (1-2) ◽  
pp. 101-105 ◽  
Author(s):  
M.V Vlasova ◽  
T.V Tomila ◽  
V.E Matsera ◽  
A.A Kilimnik ◽  
A.B Golubnichiy
Keyword(s):  
Disperse System

Effect of electro-kinetic processes on filtration of fluids and gas in porous medium

2021 ◽  
pp. 16-21
Author(s):  
A.M. Mamed-zade ◽  
Keyword(s):  
Porous Medium ◽  
Disperse System ◽  
Gas Flow ◽  
Double Electric Layer ◽  
Flow Potential ◽  
Electro Osmosis ◽  
Kinetic Processes

The paper reviews the fluid and gas flow in the porous medium considering electro-kinetic phenomena – electro-phoresis and electro-osmosis, as well as the charges associated with them. These phenomena are due to the double electric layer on the border of division of disperse system phases. Electro-kinetic phenomena are follows: electro-phoresis, electro-osmosis, flow potential (Quincke effect) and sedimentation potential (Dorn effect). The formulas for the motion of fluid and gas in porous medium considering the properties of porous medium and saturating them fluids, as well as the interaction between them, which is described with electro-kinematic phenomena, have been obtained. Obtained formulas have been evaluated via the results of laboratory researches.

Electrooxidation of Alcohols in an N-Oxyl-Immobilized Poly(ethylene-co-acrylic Acid)/Water Disperse System.

ChemInform ◽  
2006 ◽  
Vol 37 (2) ◽  
Author(s):  
Hideo Tanaka ◽  
Jun Kubota ◽  
Seiji Miyahara ◽  
Manabu Kuroboshi
Keyword(s):  
Acrylic Acid ◽  
Disperse System ◽  
Acid Water ◽  
Poly Ethylene

scholarly journals Effect of Electric Field on Viscoelastic Properties in Silicone Gel of Disperse System

2002 ◽  
Vol 122 (2) ◽  
pp. 157-163
Author(s):  
Ryoichi Hanaoka ◽  
Shinzo Takata ◽  
Yuichi Nakazawa ◽  
Tadashi Fukami ◽  
Koji Sakurai
Keyword(s):  
Electric Field ◽  
Disperse System ◽  
Viscoelastic Properties ◽  
Silicone Gel
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