Sugar – starch – and carbohydrates – Processes – Carbohydrate manufacture and refining
Patent
1991-03-25
1992-01-07
Morris, Theodore
Sugar, starch, and carbohydrates
Processes
Carbohydrate manufacture and refining
127 36, 127 462, 127 58, 536124, 536125, 536127, C13J 106, C13F 102, C07H 106, C07H 300
Patent
active
050787969
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.
REFERENCES:
patent: 4067748 (1978-01-01), Rowe
patent: 4156076 (1979-05-01), Dahlgren
patent: 4663449 (1987-05-01), Barker et al.
patent: 5002612 (1991-03-01), Beadle et al.
Beadle James R.
Saunders James P.
Wajda, Jr. Thomas J.
Biospherics Incorporated
Hailey P. L.
Morris Theodore
Ramsey William S.
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