Process for preparing lactulose from lactose by epimerization wi

Details Process for preparing lactulose from lactose by epimerization wi Process for preparing lactulose from lactose by epimerization wi

1988-11-17

1990-09-18

Pak, Chung K.

Sugar, starch, and carbohydrates

Processes

Carbohydrate manufacture and refining

127 48, 127 50, 536125, 536127, 423119, 423600, C13K 1300, C13D 314, C13D 300

Patent

active

049575643

ABSTRACT:
A process for preparing lactulose from lactose in which an aqueous lactose mixture is reacted with a sodium aluminate solution and the solution obtained is continuously neutralized by feeding this solution and a sulphuric acid solution to a reactor simultaneously in such a manner as to obtain a pH of between 4.5 and 8.
By operating in this manner an aluminium hydroxide suspension is obtained which can be easily separated from the lactulose solution.

REFERENCES:
patent: 3546206 (1970-12-01), Guth et al.
patent: 3822249 (1974-07-01), Tumerman et al.
Chemical Abstracts, v. III, No., Aug. 21, 1989, p-Chemical Abstract No. 59888j, Carobbi et al., "Process for Preparing Lactulose from Lactose by Epimerization with Sodium Aluminate," Eur. Pat. Appl. No. 320,670, Jun. 21, 1989.

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