Method of preparing lacitol monohydrate and dihydrate

Details Method of preparing lacitol monohydrate and dihydrate Method of preparing lacitol monohydrate and dihydrate

1991-10-04

1998-03-10

Peselev, Elli

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536 11, 536 41, C07H 100

Patent

active

057263035

ABSTRACT:
The invention relates to the new product lactitol monohydrate and to a method for the production of crystalline lactitol. The crystalline lactitol monohydrate can be obtained bij seeding an aqueous lactitol solution of a special concentration under special conditions causing the lactitol monohydrate to crystallize and recovering the product. From the mother liquor a further amount of lactitol dihydrate can be recovered. Crystalline lactitol dihydrate can be obtained using different special conditions. Lactitolmonohydrate can further be obtained by mixing one part bij weight of an aqueous lactitol solution of a suited concentration with 1 tot 3 parts bij weight of methanol or ethanol and cooling the mixture to 15.degree. tot 25.degree. C.

REFERENCES:
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patent: 4442132 (1984-04-01), Kim
Mark van Bommel and Jan Kanters, "The Crystal and Molecular Structures of Lactitol Monohydrate and Lactitol Dihydrate", Nov. 13, 1979, a report presented to C.V. Chemie Combinatie Amsterdam C.C.A., presented at the 6th European Crystallographic Meeting, Barcelona, Spain on Jul. 28, 1980.
Wolfrom et al, Journal of American Chemical Society "Crystalline Lactositol", vol. 60, Mar. 1938, pp. 571-573.
Wolfrom et al, Journal of American Chemical Society, "Lactitol Dihydrate", vol. 74, Feb. 20, 1952, p. 1105.
van Velthuijsen, J. of Agricultural and Food Chemistry, "Food Add Der. from Lactose", vol. 27, Jul.-Aug. 1979, pp. 680-686.
van Bommel et al. A report Presented at the 6th European Crystall. Meeting, Barcelona Spain on Jul. 28, 1980.

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