Inalco S.p.a.

Giuseppe Bimbi

Giovanni Cipolletti

Renato Carobbi

Process for the preparation of lactulose wherein an aqueous solution or suspension of lactose is reacted with sodium aluminate in order to produce the isomerization of lactose and the mixture thus obtained is neutralized by treatment with gaseous CO,under pressure, obtaining a suspension of aluminum hydroxide which can be easily separated from the lactulose solution.

Process for the preparation of a lactulose syrup by lactose isomerization

The following description sets forth a new process for the preparation of .gtoreq.98.5% pure crystalline lactulose from commercially available aqueous syrups having the following composition: 50-70% by weight of lactulose, 3-9% by weight of lactose, 3-14% by weight of galactose, 4-7% by weight of other carbohydrates, the total content of carbohydrates different from lactulose being of from 10% to 30%.

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Pontedera, Italy

Giuseppe Bimbi