Results 141 to 150 of about 10,269,362 (177)
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Journal of Chemical Technology & Biotechnology, 2017
AbstractBACKGROUNDD‐psicose is a rare sugar and exists in extremely small quantities in nature. It has important physiological functions and is allowed to be used as an ingredient in foods and dietary supplements. The aim of this study is to develop the biotransformation, separation and purification methods for highly efficient mass production of d ...
Can Li +6 more
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AbstractBACKGROUNDD‐psicose is a rare sugar and exists in extremely small quantities in nature. It has important physiological functions and is allowed to be used as an ingredient in foods and dietary supplements. The aim of this study is to develop the biotransformation, separation and purification methods for highly efficient mass production of d ...
Can Li +6 more
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Synthesis and stereochemistry of some derivatives of d-psicose
Carbohydrate Research, 1979Abstract A number of derivatives of the ketohexose d -psicose have been synthesized, comprising examples of acetals, esters, ethers, and glycosides. Among them are precursors of 1-,3-,5-, and 6-mono- O -methyl- d -psicose, including 3- O -methyl-β- d -psicopyranose 4,5-carbonate, the first crystalline representative of the reducing form of the ...
Philippe C.M. Herve Du Penhoat +1 more
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Applied Microbiology and Biotechnology, 2013
D-Tagatose 3-epimerase family enzymes can efficiently catalyze the epimerization of free keto-sugars, which could be used for D-psicose production from D-fructose. In previous studies, all optimum pH values of these enzymes were found to be alkaline. In this study, a D-psicose 3-epimerase (DPEase) with neutral pH optimum from Clostridium bolteae (ATCC ...
Min, Jia +6 more
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D-Tagatose 3-epimerase family enzymes can efficiently catalyze the epimerization of free keto-sugars, which could be used for D-psicose production from D-fructose. In previous studies, all optimum pH values of these enzymes were found to be alkaline. In this study, a D-psicose 3-epimerase (DPEase) with neutral pH optimum from Clostridium bolteae (ATCC ...
Min, Jia +6 more
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d-Allose and d-psicose reinforce the action of metronidazole on trichomonad
Parasitology Research, 2011The effects of D-allose and D-psicose on Tritrichomonas foetus were examined. They were cultured in F-bouillon medium including glucose, but had never increased when glucose was substituted to those sugars. When cultured in a medium including a dose of ED(50) metronidazole and those sugars, trichomonad density was significantly less than that in a ...
Masakazu, Harada +5 more
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Efficient conversion of allitol to d-psicose by Bacillus pallidus Y25
Journal of Bioscience and Bioengineering, 2007An efficient method for conversion of allitol to D-psicose was achieved by a resting cell reaction of Bacillus pallidus Y25 for the first time. Notably, it was possible to produce D-allose and D-altrose from allitol directly via D-psicose by prolonging the reaction time. This method was applied for the preparation of D-psicose using the extract of Itea
Wayoon, Poonperm +6 more
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Chitosan Productivity Enhancement in Rhizopus oryzae YPF-61A by D-Psicose
Journal of Bioscience and Bioengineering, 2003The effect of the rare sugar D-psicose on chitosan production by Rhizopus oryzae was studied. The fungus was not able to utilize D-psicose as a sole source of carbon, either for germination of the spores or for growth of the vegetative cells. In a medium containing a low amount of D-glucose, however, D-psicose supplementation between 5 and 12 g/l ...
Kazutoshi, Yoshihara +3 more
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Crystal data of branched-chain derivatives of D-psicose
Journal of Applied Crystallography, 1981Crystal 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 +3 more
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Bioconversion of D-psicose to D-tagatose and D-talitol by Mucoraceae fungi
Journal of Bioscience and Bioengineering, 2006Rhizopus 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 +3 more
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Development of an amperometric flow analysis sensor for specific detection of d-psicose
Biosensors and Bioelectronics, 2008The 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 +9 more
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A sensitive and high throughput method for the analysis of d-psicose by capillary electrophoresis
Food Chemistry, 2019d-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 +4 more
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