نتایج جستجو برای: 12 butanediol

تعداد نتایج: 581627  

Journal: :Chemical communications 2013
Yusuke Funasako Tomoyuki Mochida

Nafion films incorporating cationic nickel complexes [Ni(II)(acac)(R4en)](+) (acac = acetylacetonato, R4en = tetraalkylethylenediamine) that exhibit chromic behavior in response to temperature changes and solvent molecules in the vapor and liquid phases have been prepared.

Journal: :Catalysts 2021

Recent studies have highlighted the therapeutic and ergogenic potential of ketone body ester, (R)-3-hydroxybutyl-(R)-3-hydroxybutyrate. In present work, enzymatic synthesis this biological active compound is reported. The (R)-3-hydroxybutyl-(R)-3-hydroxybutyrate has been produced through transesterification racemic ethyl 3-hydroxybutyrate with (R)-1,3-butanediol by exploiting selectivity Candid...

Journal: :Stroke 1987
D J Combs L G D'Alecy

Functional assessment of animals following experimental cerebral ischemia is often difficult due to the passive nature of many neurologic exams. We attempted to increase the objectivity of motor function evaluation by adapting quantifiable behavioral tests and actively testing rats' motor capability following a cerebral ischemic insult. It was hypothesized that active testing would reveal motor...

2014
Teng Bao Xian Zhang Zhiming Rao Xiaojing Zhao Rongzhen Zhang Taowei Yang Zhenghong Xu Shangtian Yang

Acetoin (3-hydroxy-2-butanone), an extensively-used food spice and bio-based platform chemical, is usually produced by chemical synthesis methods. With increasingly requirement of food security and environmental protection, bio-fermentation of acetoin by microorganisms has a great promising market. However, through metabolic engineering strategies, the mixed acid-butanediol fermentation metabol...

Journal: :Metabolic engineering 2014
Jiazhang Lian Ran Chao Huimin Zhao

2,3-Butanediol (BDO) is an important chemical with broad industrial applications and can be naturally produced by many bacteria at high levels. However, the pathogenicity of these native producers is a major obstacle for large scale production. Here we report the engineering of an industrially friendly host, Saccharomyces cerevisiae, to produce BDO at high titer and yield. By inactivation of py...

2010
Zijun Xiao Chuanjuan Lv Chao Gao Jiayang Qin Cuiqing Ma Zhen Liu Peihai Liu Lixiang Li Ping Xu

BACKGROUND The high costs of pyridine nucleotide cofactors have limited the applications of NAD(P)-dependent oxidoreductases on an industrial scale. Although NAD(P)H regeneration systems have been widely studied, NAD(P)(+) regeneration, which is required in reactions where the oxidized form of the cofactor is used, has been less well explored, particularly in whole-cell biocatalytic processes. ...

2015
Lijie Zhang Yingxin Zhang Qiuyuan Liu Liying Meng Mandong Hu Min Lv Kun Li Chao Gao Ping Xu Cuiqing Ma

Diacetyl, a high value product that can be extensively used as a food ingredient, could be produced from the non-enzymatic oxidative decarboxylation of α-acetolactate during 2,3-butanediol fermentation. In this study, the 2,3-butanediol biosynthetic pathway in Enterobacter cloacae subsp. dissolvens strain SDM, a good candidate for microbial 2,3-butanediol production, was reconstructed for diace...

Journal: :journal of the iranian chemical research 0
saleh bagheri department of physical and theoretical chemistry , faculty of chemistry, islamic azad university, tehran north branch, tehran, iran mahdi rakhshi faculty of chemistry, university of bu ali sina, hamadan, iran mahdi rezaei sameti department of chemistry, faculty of science, malayer university, malayer, iran

densities and excess molar volume of the binary and ternary mixtures formed by nbutylacetate+ 1-butanol + 1,2-butanediol were measured at (298.15, 303.15, and 308.15) k forthe liquid region and at ambient pressure (81.5) k pa , for the whole composition range. theexcess molar volumes,vme and excess partial molar volume vie ,were calculated fromexperimental densities.the excess molar volumes are...

2016
Vijayalakshmi Kandasamy Jianming Liu Shruti Harnal Dantoft Christian Solem Peter Ruhdal Jensen

The potential that lies in harnessing the chemical synthesis capabilities inherent in living organisms is immense. Here we demonstrate how the biosynthetic machinery of Lactococcus lactis, can be diverted to make (3R)-acetoin and the derived 2,3-butanediol isomers meso-(2,3)-butanediol (m-BDO) and (2R,3R)-butanediol (R-BDO). Efficient production of (3R)-acetoin was accomplished using a strain w...

Journal: :Plant physiology 2004
Choong-Min Ryu Mohamed A Farag Chia-Hui Hu Munagala S Reddy Joseph W Kloepper Paul W Paré

Plant growth-promoting rhizobacteria, in association with plant roots, can trigger induced systemic resistance (ISR). Considering that low-molecular weight volatile hormone analogues such as methyl jasmonate and methyl salicylate can trigger defense responses in plants, we examined whether volatile organic compounds (VOCs) associated with rhizobacteria can initiate ISR. In Arabidopsis seedlings...

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