Production of l-allose and d-talose from l-psicose and d-tagatose by l-ribose isomerase
نویسندگان
چکیده
منابع مشابه
Crystal structure of β-d,l-psicose
The title compound, C6H12O6, a C-3 position epimer of fructose, was crystallized from an aqueous solution of equimolar mixture of d- and l-psicose (1,3,4,5,6-penta-hydroxy-hexan-2-one, ribo-2-hexulose, allulose), and it was confirmed that d-psicose (or l-psicose) formed β-pyran-ose with a (2) C 5 (or (5) C 2) conformation. In the crystal, an O-H⋯O hydrogen bond between the hy-droxy groups at th...
متن کاملCrystal structure of β-d,l-allose
The title compound, C6H12O6, a C-3 position epimer of glucose, was crystallized from an equimolar mixture of d- and l-allose. It was confirmed that d-allose (l-allose) formed β-pyran-ose with a (4) C 1 ((1) C 4) conformation in the crystal. In the crystal, molecules are linked by O-H⋯O hydrogen bond, forming a three-dimensional framework. The cell volume of the racemic β-d,l-allose is 739.36 (3...
متن کاملCharacterization of an L-arabinose isomerase from Bacillus coagulans NL01 and its application for D-tagatose production
BACKGROUND L-arabinose isomerase (AI) is a crucial catalyst for the biotransformation of D-galactose to D-tagatose. In previous reports, AIs from thermophilic bacterial strains had been wildly researched, but the browning reaction and by-products formed at high temperatures restricted their applications. By contrast, AIs from mesophilic Bacillus strains have some different features including lo...
متن کاملEngineering the l-Arabinose Isomerase from Enterococcus Faecium for d-Tagatose Synthesis.
l-Arabinose isomerase (EC 5.3.1.4) (l-AI) from Enterococcus faecium DBFIQ E36 was overproduced in Escherichia coli by designing a codon-optimized synthetic araA gene. Using this optimized gene, two N- and C-terminal His-tagged-l-AI proteins were produced. The cloning of the two chimeric genes into regulated expression vectors resulted in the production of high amounts of recombinant N-His-l-AI ...
متن کاملPreparation of D-Psicose from D-Fructose by Immobilized D-Tagatose 3-Epimerase
D-Tagatose 3-epimerase (D-TE) from Pseudomonas sp. ST-24 immobilized on Chltopearl beads of BCW 2503 was used in the preparation of D-psicose from D-fructose. When D-fructose solution (10%) was passed through a column packed with immobilized D-TE about 20% of the D-fructose was converted to D-psicose. This column was continuously used for 10 d at 4PC and about 90 g of D-psicose were obtained fr...
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ژورنال
عنوان ژورنال: Bioscience, Biotechnology, and Biochemistry
سال: 2015
ISSN: 0916-8451,1347-6947
DOI: 10.1080/09168451.2015.1038215