L-山梨糖, L-Sorbose

L-(–)-Sorbose is a monosaccharide and an intermediate in the biosynthesis of L-ascorbic acid in bacteria. It is formed via dehydrogenation of D-sorbitol by D-sorbitol dehydrogenase (SLDH). L-(–)-Sorbose has commonly been used as a starting material in the commercial biosynthesis of L-ascorbic acid.

Sorbose, also known as Keto-L-sorbose, is a ketose sugar that is commonly used in the commercial synthesis of ASCORBIC ACID. It is an enantiomer of a keto-D-sorbose. L-(–)-Sorbose is a monosaccharide and an intermediate in the biosynthesis of L-ascorbic acid in bacteria. It is used as a starting reagent for the commercial biosynthesis of ascorbic acid (vitamin C).

Title: Sorbose

CAS Registry Number: 87-79-6

CAS Name: L-Sorbose

Additional Names: sorbin; sorbinose

Molecular Formula: C6H12O6

Molecular Weight: 180.16

Percent Composition: C 40.00%, H 6.71%, O 53.28%

Literature References: From sorbitol by fermentation with Acetobacter suboxydans: Perlman, J. Chem. Educ. 36, 60 (1959); Lockwood, Methods Carbohydr. Chem. 1, 151 (Academic Press, New York, 1962).

Properties: Orthorhombic, bisphenoidal crystals. About as sweet as sucrose. d15 1.65. mp 165°. [a]D30 -42.7° (c = 5). pKa (17.5° ): 11.55. Freely sol in water; almost insol in alcohol. Reduces Fehling's soln.

Melting point: mp 165°

pKa: pKa (17.5° ): 11.55

Optical Rotation: [a]D30 -42.7° (c = 5)

Density: d15 1.65

Use: In the manuf of vitamin C (accounts for nearly 1000 tons of ascorbic acid produced every year). For conversion of L-sorbose to 2-keto-L-gulonic acid see Reichstein, Grüssner, Helv. Chim. Acta 17, 311 (1934).

We can also supply similar following products.