Results 161 to 170 of about 13,213 (217)

Identification and measurement of 2,3‐butanediol in silage

Journal of the Science of Food and Agriculture, 1973
Abstract2,3‐butanediol was identified in silage extracts using gas chromatography and mass spectrometry. It was present in stacks of untreated and formaldehyde‐treated silage in concentrations of 2.4% of the dry matter.
P F, Fennessy, T N, Barry
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On the role of 2,3-butanediol in the metabolism of ethanol

Medical Hypotheses, 1986
A new mechanism is proposed for the enzymatic formation of 2,3-butanediol. It could be related to the elimination of ethanol and acetaldehyde in chronic alcoholic subjects.
F J, López-Soriano, J M, Argilés
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Stereospecificity of Corynebacterium glutamicum 2,3-butanediol dehydrogenase and implications for the stereochemical purity of bioproduced 2,3-butanediol

Applied Microbiology and Biotechnology, 2016
The stereochemistry of 2,3-butanediol (2,3-BD) synthesis in microbial fermentations is important for many applications. In this work, we showed that Corynebacterium glutamicum endowed with the Lactococcus lactis genes encoding α-acetolactate synthase and decarboxylase activities produced meso-2,3-BD as the major end product, meaning that (R)-acetoin is
Dušica Radoš, David L. Turner, Teresa Catarino, Eugenia Hoffart, Ana Rute Neves, Bernhard J. Eikmanns, Bastian Blombach, Helena Santos   +7 more
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PRODUCTION AND PROPERTIES OF 2,3-BUTANEDIOL XXXVI. LINEAR POLYESTERS OF 2,3-BUTANEDIOL

Canadian Journal of Research, 1950
New polyesters with basic units containing 6, 7, 8, 9, 10, 13, and 14 chain atoms have been prepared from levo-2,3-butanediol and ethyl oxalate, ethyl malonate, dimethyl terephthalate, maleic anhydride, succinic, glutaric, adipic, azelaic, and sebacic acids, and from meso-2,3-butanediol and o-phthalic anhydride. Esterification of 2,3-butanediol with a
R. W. Watson, N. H. Grace, J. L. Barnwell   +2 more
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Microbial Production of 2,3-Butanediol

2011
Microbial production of 2,3-butanediol (2,3-BDL) was once conducted commercially in Europe until it could be made more cheaply from fossil oil sources. Interest in its biotechnological production resurfaced recently due to its diverse potential practical uses and the ever-decreasing availabilities of petroleum oil.
Sabra, Wael, Quitmann, Hendrich, Zeng, An-Ping, Dai, Jian Ying, Xiu, Zhi-Long   +4 more
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Separation of Racemic frommeso-2,3-Butanediol

Cryobiology, 1999
2,3-Butanediol containing less than 3% of the meso form has been obtained from samples containing up to 50% of the meso form. The diacetate was obtained by esterification with acetic anhydride in the presence of traces of sulfuric acid as a catalyst and was then purified.
Utille, J.P., Boutron, P.
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UTILIZATION OF 2,3-BUTANEDIOL BY SHEEP

Canadian Journal of Animal Science, 1981
2,3-butanediol was measured at concentrations of up to 1.8% of the dry matter in barley silage and in lesser amounts in alfalfa-grass silage. In exp. 1, from 1.2 to 2.5% of the 2,3-butanediol in barley silage consumed by sheep was excreted in the urine. In exp. 2, 2,3-butanediol was fed to 16 sheep at concentrations of 0, 1, 3 or 5% of the diet for 20
G. W. MATHISON, MIRJANA FENTON, L. P. MILLIGAN   +2 more
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Biological production of 2,3-butanediol

Applied Microbiology and Biotechnology, 2001
2,3-Butanediol (2,3-BDL), which is very important for a variety of chemical feedstocks and liquid fuels, can be derived from the bioconversion of natural resources. One of its well known applications is the formation of methyl ethyl ketone, by dehydration, which can be used as a liquid fuel additive. This article briefly reviews the basic properties of
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PRODUCTION AND PROPERTIES OF 2,3-BUTANEDIOL: XXIII. CONDENSATION OF THE ISOMERIC 2,3-BUTANEDIOLS WITH ETHYL ACETOACETATE

Canadian Journal of Research, 1947
levo-2,3-Butanediol will condense with ethyl acetoacetate in the presence of hydrochloric acid to give the ethyl ester of levo-2,4,5-trimethyl-2-carboxymethyl-1,3-dioxacyclopentane (I) (yield 48%) from which the free acid may be obtained. If p-toluenesulphonic acid is used as the catalyst and the condensation is carried out in boiling butanol with ...
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Metabolism of 2,3‐butanediol in yeasts

Yeast, 1988
AbstractThe biochemistry and physiology of 2,3‐butanediol metabolism has been studied in a number of selected yeast species. Candida utilis CBS 621 exhibited diauxic growth on 2,3‐butanediol. The first phase was characterized bu the utilization of the two optically active stereoisomers and associated accumulatoin. In the second phase of growth the meso‐
Cornelis Verduyn, Guido J. Breedveld, W. Alexander Scheffers, Hohannes P. Van Dijken   +3 more
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