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The process may be likened to how yeast ferments sugars to produce ethanol for wine, beer, or fuel, but the organisms that carry out the ABE fermentation are strictly anaerobic (obligate anaerobes). The ABE fermentation produces solvents in a ratio of 3 parts acetone, 6 parts butanol to 1 part ethanol.
A senior lecturer at the University of Manchester, England, he used them in 1916 as a bio-chemical tool to produce at the same time, jointly, acetone, ethanol, and n-butanol from starch. The method has been described since as the ABE process , (Acetone Butanol Ethanol fermentation process), yielding 3 parts of acetone , 6 of n -butanol, and 1 ...
2-methyl-1-butanol - sometimes called "active" amyl alcohol; isobutyl alcohol - one of the least toxic of the butanols. 1-propanol; Other higher alcohols that can be produced during fermentation include: isopropanol (isopropyl alcohol), oxidized to form acetone by alcohol dehydrogenase in the liver, leading to ketosis when ingested in large ...
[1] Fermentation is a type of redox metabolism carried out in the absence of oxygen. [1] [2] During fermentation, organic molecules (e.g., glucose) are catabolized and donate electrons to other organic molecules. In the process, ATP and organic end products (e.g., lactate) are formed. Because oxygen is not required, it is an alternative to ...
The organosolv fractionation of mountain-beetle-killed lodgepole pine has yielded 97% conversion to glucose. Pan et al. [9] recovered 79% of the lignin using conditions of 170 °C, 1.1% w/w H 2 SO 4, 65% v/v ethanol for 60 minutes. Furthermore, ethanol organosolv pretreated rice straw was used to produce biohydrogen using Enterobacter aerogenes ...
He developed the acetone–butanol–ethanol fermentation process, which produces acetone, n-butanol and ethanol through bacterial fermentation. His acetone production method was of great importance in the manufacture of cordite explosive propellants for the British war industry during World War I .
The term aldol condensation is also commonly used, especially in biochemistry, to refer to just the first (addition) stage of the process—the aldol reaction itself—as catalyzed by aldolases. However, the first step is formally an addition reaction rather than a condensation reaction because it does not involve the loss of a small molecule.
Potassium permanganate (KMnO 4) oxidizes primary alcohols to carboxylic acids very efficiently. This reaction, which was first described in detail by Fournier, [10] [11] is typically carried out by adding KMnO 4 to a solution or suspension of the alcohol in an alkaline aqueous solution. For the reaction to proceed efficiently, the alcohol must ...