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7 Cards in this Set

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Isomaltose

Glu+Glu , alpha 1,6 bond


Enzymic hydrolysis of starch (the branch points in amylopectin)

Maltose

Glu+Glu, alpha 1,4


Enzymic hydrolysis of starch, germinating cereals and malt.

Lactose

Gal+Glu, beta 1,4


Milk and many pharmaceutical preparations.

Lactulose

Gal+Fru, beta 1,4


Heated milk (small amounts), mainly synthetic


Used as a mild osmotic laxative.

Sucrose

Glu+Fru, beta 1,2 linkage,


Cane and beet sugar, sorghum and some fruits and vegetables.

Trehalose

Glu+Glu, alpha 1,1


Yeasts and fungi,


Main sugar of insect hemolymph.

Invert sugar

Sucrose- +62.5 degrees



After hydrolysis- final specific rotation becomes- -19.5 degrees



Fructose- -66.5 degrees


Glucose- +52.5 degrees


Because the hydrolytic product of sucrose invert the specific rotation, it is called invert sugar.