Solubility of D-Galactose, D-Talose, and D-Tagatose in Aqueous Ethanol at Low Temperature
نویسندگان
چکیده
منابع مشابه
Lactose and D-galactose metabolism in Staphylococcus aureus. II. Isomerization of D-galactose 6-phosphate to D-tagatose 6-phosphate by a specific D-galactose-6-phosphate isomerase.
The inducible D-galactose-6-phosphate isomerase that functions in the metabolism of lactose and D-galactose in Staphylococcus aureus was partially purified from extracts of D-galactose-grown cells. It was shown to catalyze specifically the reversible isomerization of D-galactose 6-phosphate to D-tagatose 6-phosphate, the apparent Km values being 9.6 mM and 1.9 mM, respectively. At equilibrium, ...
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Lactose is usually metabolized by A-galactosidase-catalyzed cleavage to D-glucose and D-galactose, followed by the conversion of Dgalactose to D-glucose 6-phosphate via the well known Leloir pathway (10): D-galactose *D galactose 1-phosphate D-glucose 1-phosphate D-glucose 6-phosphate. In Staphylococcus aureus, however, the disaccharide is utilized exclusively via lactose phosphate, which is cl...
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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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A new isomerization reaction was developed to synthesize rare ketoses. D-tagatose, D-xylulose, and D-ribulose were obtained in the maximum yields of 24%, 38%, and 40%, respectively, from the corresponding aldoses, D-galactose, D-xylose, and D-ribose, by treating the aldoses with 80% (v/v) subcritical aqueous ethanol at 180°C. The maximum productivity of D-tagatose was ca. 80 g/(Lh). Increasing ...
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The ability of d-glucose/d-galactose-binding protein (GGBP) to reversibly interact with its ligands, glucose and galactose, makes this protein an attractive candidate for sensing elements of glucose biosensors. This potential is largely responsible for attracting researchers to study the conformational properties of this protein. Previously, we showed that an increase in the fluorescence intens...
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ژورنال
عنوان ژورنال: Food Science and Technology Research
سال: 2015
ISSN: 1344-6606,1881-3984
DOI: 10.3136/fstr.21.801