Glucose-galactose syrups

Glucose-galactose syrups are about three times sweeter than lactose (70% as sweet as sucrose) and hence lactose-hydrolysed milk could be used in the production of ice-cream, yoghurt or other sweetened dairy products, permitting the use of less sucrose and reducing caloric content. However, such applications have not been commercially successful. 

The glucose moiety can be isomerized to fructose by the well-established glucose isomerization process to yield a galactose-glucose-fructose syrup with increased sweetness. Another possible variation would involve the isomerization of lactose to lactulose (galactose-fructose) which can be hydrolysed to galactose and fructose by some / -galactosidases. 

On thorough evaporation of all the water from a solution of glucose, fructose, mannose, or galactose, the sugar is left as a syrup that appears as a... 

The production of sweet whey syrups is becoming increasingly important due to the use of carrier-bound lactase (P-galactosidase, EC. 3.2.1.23). In these syrups, lactose is hydrolyzed to glucose and galactose. Concentration to 60-75% solids is achieved by evaporation. 

Monosaccharides (glucose, fructose, galactose) and disaccharides (sucrose, lactose, and maltose) are crystalline, water-soluble, sweet compounds, which are used for sweetening foods. They are found in fruits, honey, milk, maple syrup, sugarcane, and sugar beets, and are digestible without cooking. 

Oxidation Tests.—Galactose and its derivatives (lactose, and galactosides) on oxidation by hot nitric acid yield mucic acid which is almost insoluble in cold water. Other saccharides yield saccharic acid which is much more soluble, but forms an identifiable acid potassium salt. The following test, which must be carried out in a fume chamber, will detect both galactose and glucose, or sugars giving rise to them. It is not applicable to dilute solutions, which must be concentrated to syrups before oxidation. 

Erwinia gum (ZANFLO) Erwinia tahitica Sucrose, Maltose, Lactose, Glucose-syrup D-Glucose, D-Galactose, D-Guluronic acid L-Fucose, Acetate... 

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