Sorbitol  less commonly known as glucitol  is a sugar alcohol with a sweet taste which the human body metabolizes slowly. 

Sorbitol may be synthesised via a glucose reduction reaction[5] in which the converted aldehyde group is converted into a hydroxyl group. The reaction requires NADH and is catalyzed by aldose reductase. 

Most sorbitol is made from potato starch, but it is also found in nature, for example in apples, pears, peaches, and prunes.[3] It is converted to fructose by sorbitol-6-phosphate 2-dehydrogenase. Sorbitol is an isomer of mannitol, another sugar alcohol; the two differ only in the orientation of the hydroxyl group on carbon 2.

D SORBITOL LR FOR MICROBIOLOGY