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Galactose tagatose

Up to 19 individual sugars have been separated in one run of 3 h using the borate system 2-deoxyribose, rhamnose, ribose, maltose, lactose, cellobiose, mannose, fructose, arabinose, fucose, galactose, tagatose, lyxose, xylose, glucose, gentiobiose, melibiose, mannoheptulose, 2-deoxygalactose. About... [Pg.469]

Not able to reproduce a previously reported approach [30] to (5) from D-galactose, Tyler and co-workers designed an efficient sequence starting from L-sorbose [46], via a partially protected 6-azido-6-deoxy-L-tagatose derivative, and obtained an overall yield of 20%. Ogawa and co-workers [47] prepared D-galactonojirimycin as well as 1-deoxygalactonojirimycin from L-quebrachitol (11), a natural product found in the serum of the rubber tree. [Pg.162]

Lactose 37 48 D-galactose (9) lactulose D-lyxose (10) resinous D-tagatose (11) 3... [Pg.312]

Bissett, D.L. Anderson, R.L. Lactose and D-galactose metabolism in Staphylococcus aureus. Ill Purification and properties of D-tagatose-6-phosphate kinase. J. Biol. Chem., 255, 8745-8749 (1980)... [Pg.213]

Schleifer, K.H. Hartinger, A. Gotz, F. Occurence of D-tagatose-6-phosphate pathway of D-galactose metabolism among Staphylococci. FEMS Microbiol. Lett., 3, 9-11 (1978)... [Pg.213]

Bissett, D. L. and Anderson, R. L. 1974A. Genetic evidence for the physiological significance of the D-tagatose 6-phosphate pathway of lactose and D-galactose degradation in Staphylococcus aureus. J. Bacteriol. 119, 698-704. [Pg.720]

A synthesis of D-tagatose from D-galactose proceeds via the hexos-2-ulose derivative 212, which was obtained by oxidation under Moffatt conditions from 211 and exists as the tautomeric form 213.426... [Pg.264]

Recently Gatzi and Reichstein28 have prepared D-sorbose by refluxing D-gulose with pyridine and by the action of very dilute potassium hydroxide on D-galactose. The product of the latter reaction was contaminated with a little D-tagatose. [Pg.106]

Tagatose, a monosaccharide similar to fructose, received GRAS status from the FDA in April 2001. This sugar, 92 percent as sweet as sucrose, with 1.5 cal/g, is produced from galactose obtained from whey, using immobilized enzymes.97 It has similar bulking properties to sucrose. [Pg.1688]

Another transformation of n-galactose to calcium n-altronate has been carried out by Reichstein and Bosshard. They heated 100 g. of D-galactose (LXXI) in anhydrous pyridine for five hours to effect partial rearrangement. From the mixture, they recovered 80 g. of crystalline D-galactose, removed the rest of it by fermentation, and obtained finally about 6.5 g. of pure D-tagatose (LXXII). This ketose formed a crystalline diisopropylidene derivative (LXXIII) which could be oxidized by alkaline permanganate to diisopropylidene-D-tagaturonic acid (LXXIV). [Pg.68]

Ammonium hydroxide at 37° isomerize.s lactose to lactulose (32) and, in common with alkalis, causcjs fragmentation to give D-galactose (34) and its isomerization products (36), together with other substances in which D-lyxose and imidazole derivatives were tentatively identified. Lactulose and D-tagatose (D-/yxo-hexulose) have been detected in heated milk. <... [Pg.190]

See other pages where Galactose tagatose is mentioned: [Pg.272]    [Pg.98]    [Pg.6]    [Pg.6]    [Pg.272]    [Pg.98]    [Pg.6]    [Pg.6]    [Pg.265]    [Pg.203]    [Pg.208]    [Pg.210]    [Pg.115]    [Pg.507]    [Pg.210]    [Pg.51]    [Pg.327]    [Pg.664]    [Pg.127]    [Pg.569]    [Pg.86]    [Pg.147]    [Pg.191]    [Pg.302]    [Pg.173]    [Pg.100]    [Pg.113]    [Pg.113]    [Pg.114]    [Pg.114]    [Pg.114]    [Pg.116]    [Pg.122]    [Pg.1693]    [Pg.623]    [Pg.1035]    [Pg.71]    [Pg.71]    [Pg.73]    [Pg.113]    [Pg.368]    [Pg.847]   
See also in sourсe #XX -- [ Pg.182 , Pg.183 ]



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