Results 111 to 120 of about 849 (141)

Crystal data of branched-chain derivatives of D-psicose

Journal of Applied Crystallography, 1981
Crystal data are reported for six derivatives of 1,2-O-isopropylidene-3-C-(pyridin-2-yl)-β-D-psicopyranose, C14H19NO6, previously studied in solution by NMR spectroscopy. Molecules that differ only by the replacement of H by CH3 on one non-ring oxygen atom, converting an alcohol to an ether molecule, show no similarity in cell dimensions, and have ...
N. Sharafi, G. Donnay, P. C. M. Herve du Penhoat, A. S. Perlin   +3 more
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Bioconversion of D-psicose to D-tagatose and D-talitol by Mucoraceae fungi

Journal of Bioscience and Bioengineering, 2006
Rhizopus oryzae MYA-2483, which cannot utilize D-psicose as a sole source of carbon, converted D-psicose to two other compounds. These compounds were identified by NMR and IR as D-tagatose and D-talitol. In this study, we describe for the first time the bioconversion of D-psicose to D-tagatose. Various strains of Mucoraceae fungi, to which R.
Kazutoshi, Yoshihara, Yoshihiro, Shinohara, Takahiro, Hirotsu, Ken, Izumori   +3 more
openaire   +2 more sources

Development of an amperometric flow analysis sensor for specific detection of d-psicose

Biosensors and Bioelectronics, 2008
The aim of this study was to develop a simple, rapid and highly sensitive sensor for measuring the rare sugar d-psicose. The proposed system adopts amperometric flow analysis and two consecutive enzyme reactions consisting of a reactor packed with d-tagatose 3-epimerase (DTE)-immobilized beads, which converts d-psicose to d-fructose, and a carbon-paste
Nobumitsu, Miyanishi, Naruhide, Sato, Shin-Ichi, Nakakita, Wataru, Sumiyoshi, Kenji, Morimoto, Hirokazu, Okuma, Masaaki, Tokuda, Ken, Izumori, Etsuo, Watanabe, Jun, Hirabayashi   +9 more
openaire   +2 more sources

Synthesis and stereochemistry of D-psicose and derivatives.

1973
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openaire   +1 more source

A sensitive and high throughput method for the analysis of d-psicose by capillary electrophoresis

Food Chemistry, 2019
d-Psicose/allulose is a rare sugar and it has high potential benefits for pharmaceutical and food industry. The existed analytical methods have its own limitations to quantify fructose and d-psicose mixtures. Hence there is a need for the development of an effective, efficient and sensitive analytical method for quantification of d-psicose in presence ...
Sri Rama Krishna, Surapureddi, Ravindhranath, Kunta, Gantasala S, Sameer Kumar, Sreedhar Reddy, Sappidi, Shrikrishna, Dadke   +4 more
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The synthesis of D-psicose derivatives using recent oxidative procedures

Journal of the Chemical Society C: Organic, 1967
The oxidation of authentic 1,2,:4,5-di-O-cyclohexylidene-D-fructopyranose and of 1,2:4,5-di-O-isopropylidene-D-fructopyranose with dimethyl sulphoxide–acetic anhydride yields 1,2:4,5-di-O-cyclohexylidene-D-erythro-hex-3-ulopyranose and 1,2:4,5-di-O-isopropylidene-D-erythro-hex-3-ulopyranose, respectively.
K. James, A. R. Tatchell, P. K. Ray
openaire   +1 more source

Conversion of d-psicose to allitol by Enterobacter agglomerans strain 221e

Journal of Fermentation and Bioengineering, 1995
Abstract Enterobacter agglomerans strain 221e transformed d -psicose to allitol at a faster rate in the presence of d -glucose in the reaction mixture when the entrance of oxygen was restricted. Cells grown on glycerol were found to be suitable for the transformation reaction.
Syed Muniruzzaman, Hisahiro Tokunaga, Ken Izumori   +2 more
openaire   +1 more source

Synthesis of some derivatives of 3-C-methyl-d-psicose, 3-C-methyl-d-fructose, and 6-deoxy-3-C-methyl-d-psicose

Carbohydrate Research, 1981
Abstract The synthesis of di- O -isopropylidene derivatives of 3- C -methyl- d -psicose ( 3 ) and 3- C -methyl- d -fructose by the reaction of 1,2:4,5-di- O -isopropylidene-β- d - erythro -hexo-2,3-diulo-2,6-pyranose ( 2 ) with methylmagnesium iodide and methyl-lithium is described. The reaction of 2 with diazomethane and reduction of the resulting
Isidoro Izquierdo Cubero, Maria D. Portal Olea   +1 more
openaire   +1 more source

[Research progress of D-psicose: function and its biosynthesis].

Sheng wu gong cheng xue bao = Chinese journal of biotechnology, 2019
As the morbidity of metabolic syndrome like obesity and diabetes increases rapidly worldwide, the issue of nutrition (functional food) and health has drawn more attention. D-psicose, a rare natural ketohexose, has become a hot topic in functional food and health-care field because of its hypoglycemic and hypolipidemic function with good sweetness. This
Xuemei, Shen, Jing, Wang, Yuan, Zhang, Xiaoyan, Wang, Ziyuan, Ding, Yi, Li, Bo, Chen, Yi, Tong   +7 more
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Molecular Modification of Ribitol Dehydrogenase and Efficient Catalysis of D-Psicose to Allitol

Journal of Agricultural and Food Chemistry
Allitol has wide applications in fields such as food and pharmaceuticals. To address the limited industrial production of allitol caused by the low catalytic efficiency of native ribitol dehydrogenase (RDH), we developed an efficient biotransformation method from D-psicose to allitol based on a computational design strategy.
Runxin Hu, Hengwei Zhang, Qiang Wang, Yujue Wang, Zhiming Rao, Xian Zhang   +5 more
openaire   +2 more sources