Process for the simultaneous production of fructose and gluconic

Details Process for the simultaneous production of fructose and gluconic Process for the simultaneous production of fructose and gluconic

1979-02-21

1980-12-30

Marantz, Sidney

Sugar, starch, and carbohydrates

Processes

Carbohydrate manufacture and refining

127 41, 127 42, 536 1, 562587, C13K 300, C13K 1100, C07C 59105

Patent

active

042421454

ABSTRACT:
A process for the simultaneous production of fructose and of gluconic acid from glucose-fructose mixtures and/or from invert sugar by the selective oxidation of the glucose proportion, wherein oxygen and/or air, activated by noble metal catalysts, are utilized as the oxidizing agents; the oxidation is conducted in a pH range of about 8 to 10; and the oxidation is terminated after the formation of 1 equivalent of carboxylic acid per mole of glucose employed.
The thus-obtained gluconic acid can subsequently be separated from the unchanged fructose in a simple way and practically quantitatively, and can be isolated as the salt.

REFERENCES:
patent: 2567060 (1951-09-01), Docal
patent: 2949389 (1960-08-01), Murtaugh
H. S. Isbell, "Methods in Carbohydrate Chem.", 101. II, R. L. Whistler, ed., 13-14, Academic Press, New York, 1963.
K. Heyns, Liebigs Ann. Chem., 558, 177-187 (1947).

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