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Photodecomposition of acetoins
Journal of the Chemical Society, Perkin Transactions 1, 1975The photodecomposition of α-substituted acetoins (la–e), both by direct irradiation and by α-diketone sensitization, has been studied. Direct irradiation at 313 nm gives acetyl derivatives (2a–e) in good yield. The reactions are not quenched by triplet quenchers.
Hong-Son Ryang, Hiroshi Sakurai
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ECS Meeting Abstracts, 2020
Introduction In food industry, the use and dosing of flavoring substances is an important aspect during fabrication processes. Acetoin and diacetyl are flavoring agents which can be found in many food products, like yogurt, cheese, milk, wine and beer [1].
Melanie Jablonski +8 more
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Introduction In food industry, the use and dosing of flavoring substances is an important aspect during fabrication processes. Acetoin and diacetyl are flavoring agents which can be found in many food products, like yogurt, cheese, milk, wine and beer [1].
Melanie Jablonski +8 more
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Biosynthesis of Acetoin by Leuconostoc citrovorum
Nature, 1961IT has been shown1 that in most bacterial cells acetoin is formed by the condensation of pyruvate and activated acetaldehyde. The findings of Beck-horn2, De Man3 and Mizuno and Jezeski4 leave no doubt that in the heterofermentative genus Leuconostoc the synthesis occurs via acetolactate.
M, BUSSE, O, KANDLER
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Acetoin as a Metabolite of Ethanol
Acta Physiologica Scandinavica, 1963AbstractBlood acetoin concentrations in rabbits were followed after administration of ethanol to animals receiving disulfiram and to control animals. Disulfiram increased blood acetoin before and after the administration of alcohol. No increase was observed in animals receiving alcohol alone.
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Elektrofermentation von Acetoin
BIOspektrum, 2018Electrode-assisted fermentation is a new strategy in anaerobic biotechnology. It can be used for reactions in which the average oxidation state of the end product is higher than the substrate. Here we show two applications of an electrode-assisted fermentation for the anoxic production of acetoin.
Beblawy, Sebastian +2 more
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Food Chemistry, 2018
2,3,5,6-Tetramethylpyrazine (TMP) is an important health functional composition in vinegars, but there are controversial viewpoints about its formation mechanism and scarce relevant records on TMP content enhancement in vinegar products. In this study, a simple and accurate solvent extraction coupled with GC-FID method was developed for the ...
Zijun Xiao +4 more
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2,3,5,6-Tetramethylpyrazine (TMP) is an important health functional composition in vinegars, but there are controversial viewpoints about its formation mechanism and scarce relevant records on TMP content enhancement in vinegar products. In this study, a simple and accurate solvent extraction coupled with GC-FID method was developed for the ...
Zijun Xiao +4 more
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Mechanism of acetoin synthesis by α-carboxylase
Biochimica et Biophysica Acta, 1952Abstract 1. 1. Highly purified preparations of α-carboxylase from wheat germ catalyze the synthesis of acetylmethylcarbinol (AMC) from pyruvate and acetaldehyde and from acetaldehyde alone. 2. 2. The AMC thus synthesized has been isolated and its identity established by conversion to diacetyl, periodate degradation, and by analysis of the ...
T P, SINGER, J, PENSKY
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Pyruvic decarboxylase and acetoin formation in Athiorhodaceae
Canadian Journal of Microbiology, 1973Studies with cell-free extracts of Rhodopseudomonas palustris strain Q showed that under anaerobic conditions pyruvate was decarboxylated with the stoichiometric formation of carbon dioxide. Other products of the reaction include acetaldehyde and acetoin (acetyl methyl carbinol), indicating the presence of pyruvic decarboxylase. A survey of purple non-
S M, Qadri, D S, Hoare
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ChemInform Abstract: PHOTODECOMPOSITION OF ACETOINS
Chemischer Informationsdienst, 1975AbstractDie Photolyse der Acetoine (I) zu den Ketonen (II) und Acetaldehyd (III) wird untersucht.
HONG‐SON RYANG, HIROSHI SAKURAI
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A Piezoelectric Crystal Detector for Acetoin
Analytical Letters, 1984Abstract A piezoelectric quartz crystal coated with tetrabutyphosphoniun chloride was found to be a good detector for acetoin. The coating is sensitive in the ppb range and completely reversible. The response curve is linear over a concentration range of 8-120 ppb. The detector can be tuned to give a satisfactory response in 30 seconds.
A. A. Suleiman +3 more
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