Sugar – starch – and carbohydrates – Processes – Carbohydrate manufacture and refining
Patent
1989-07-19
1991-03-26
Morris, Theodore
Sugar, starch, and carbohydrates
Processes
Carbohydrate manufacture and refining
127 462, 127 58, C13K 1300, C13D 302
Patent
active
050026127
ABSTRACT:
A process is disclosed for the synthesis of D-tagatose by isomerizing a mixture containing D-galactose with a metal hydroxide in the presence of a catalyst at a relatively low temperature to form an intermediate metal hydroxide-D-tagatose complex, and then neutralizing the intermediate with acid to yield D-tagatose. The method is also suitable for the synthesis of L-tagatose from L-galactose, and for the recovery of pure tagatose from crude tagatose syrups. Whey, deproteinized whey, or lactose may be used as the raw material for the D-galactose. The lactose in such cases is hydrolyzed to D-galactose and D-glucose before the isomerization step.
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patent: 4663449 (1987-05-01), Barker et al.
Reichstein, T. and Bosshard, W. Helv. Chim. Acta 17, 753-761, 1934, d-Tagatose, Diacetone-d-tagatose and d-tagaturonic acid, Translation from Chemical Abstracts, 28, 6113, 1934.
Nef, J. U. Annalen, 403, 204-383, 1913, Dissociation reactions in the sugar group, III, Translation from Chemical Abstracts, 1738-1742.
Lobry De Bruyn, C. A. and VanEkenstein, W. A. Recueil des Travaux Chimiques des Pays Bas, 16, 262-273, 1897, Translation of Abstract.
Beadle James R.
Saunders James P.
Wajda, Jr. Thomas J.
Biospherics Incorporated
Brunsman David M.
Morris Theodore
Ramsey William S.
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